Dual Output BWR Models Mixed Voltage, 5V AND 3.3V, 2 x 2 33 Watt DC/DC Converters

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1 Mixed Voltage, V AND 3.3V, x Typical units FEATURES Regulated 3.3V and V outputs 7 Amps capability 33 Watts total output power No-load operation Available input voltage ranges: -8V, 8-36V or 36-7V Small " x " x." package UL9 and EN69- safety approvals mark available (7V-input models) Continuous short-circuit protection Fully isolated, Vdc guaranteed to + C operating temperature Input under and overvoltage shutdown overvoltage protection Thermal shutdowns PRODUCT OVERVIEW For applications requiring 33 watts of power from V and 3.3V, DATEL offers a new power sharing DC/DC converter capable of meeting your output current requirements. The BWR-/6-3.3/7-D8 (36-7V input), BWR-/6-3.3/7-D (8-36V input) and BWR-/6-3.3/7-D (-8V input) are fully isolated DC/DC converters capable of delivering any combination of V and 3.3V loading up to a combined total of 33 Watts of output power. Housed in a standard " x " x." metal package coated with electrically non-conductive fi nish, these converters utilize a shared controlloop system to assure load regulation of ±% for 3.3V output and ±.% for V output. All models include input Pi fi ltering, input overvoltage and undervoltage shutdown circuitry, output overvoltage protection, output short-circuit and current limiting protection, and thermal shutdown. Each design also provides trim capability and on/off control function. Fully synchronous output rectifi cation renders high effi ciency and no-load operation. BWR power sharing modules offer low ripple and noise performance, high effi ciency (88%), Vdc of isolation voltage, and are fully specifi ed for to + C operation. These devices meet IEC9, UL9 and EN69 safety standards, including BASIC insulation requirements for D8 models. CB reports are available on request. D8 models are CE marked (meet LVD requirements). +INPUT () +V OUTPUT () SWITCH CONTROL +3.3V OUTPUT (7) INPUT () ON/OFF CONTROL () PWM CONTROLLER ACTIVE BLEEDER OUTPUT RETURN (6) UV & OV COMPARATORS THERMAL SHUTDOWN OPTO ISOLATION REFERENCE & ERROR AMP TRIM (8) Typical topology is shown. Figure. Simplified Schematic For full details go to MDC_BWR 33W Models.A6 Page of

2 Performance Specifications and Ordering Guide ➀ ORDERING GUIDE SUMMARY Models BWR-/6-3.3/7-D BWR-/6-3.3/7-D BWR-/6-3.3/7-D8 VOUT (Volts) IOUT ➁ (Amps) Mixed Voltage, V AND 3.3V, x R/N (mvp-p) ➂ Regulation (Max.) ➆ VIN Nom. Range IIN ➄ Efficiency Typ. Max. Line Load ➃ No Load ➅ (Volts) (Volts) (ma) Min. Typ. 6 ±% ±.% ±.% ±.% ±% ±.% 6 ±% ±.% ±.% ±.% ±% ±.% 6 ±% ±.% ±.% ±.% ±% ±.% ➀ Typical at TA = + C under nominal line voltage and balanced full-load conditions A). ➁ Any combination of V/3.3V rated IOUT current, not to exceed 33 Watts of output power. (See derating graphs.) ➂ Ripple/Noise (R/N) measured over a MHz bandwidth. All models are specifi ed with µf ceramic output capacitors. ➃ Tested from % load to % load (other output at % load). *LAST TIME BUY: //8. CLICK HERE FOR DISCONTINUANCE NOTICES. PART NUMBER STRUCTURE Input Package (Case, Pinout) -8 7/338 83% 86% C,P /6 8% 88% C,P /78 8% 88% C,P33 ➄ Nominal line voltage, no load/balanced full-power condition. ➅ Tested from no-load to % load (other output at no-load). ➆ trim may impact V load regulation. Dual / Mixed-Voltage Series BWR - / / 7 -D8 V Nominal Voltage: Volts I Maximum Current: 6 Amps LX - C Input Voltage Range: D = -8 Volts (V nominal) D = 8-36 Volts (V nominal) D8 = 36-7 Volts (8V nominal) V Nominal Voltage: 3.3 Volts I Maximum Current: 7 Amps RoHS-6 Compliance* Optional Functions Optional Functions BWR 33 Watt DC/DC s are designed with an On/Off Control function with positive polarity in the pin position. L Pin length:. in. (.79mm) ±. L Pin length:. in. (3.68mm) ±. Pin length options require a minimum order quantity. Refer to the last page for additional options. * Contact MPS for availability. MECHANICAL SPECIFICATIONS. (.8). (.3) Case C C Metal Case METAL CASE. (.8). MIN (.8). (.6).8 (.7) INSULATED BASE. ±. DIA (.6 ±.). (.). (3.8) 3 EQ. (.6). (.8) I/O Connections Pin Function P33 +Input Input 3 No Pin On/Off Control +V 6 Return V 8 Trim Notes: For D and D models the case is connected to pin ( Input). For D8 models, the case is connected to pin (+Input).. (.) BOTTOM VIEW. (.6) Dimensions in inches (mm) MDC_BWR 33W Models.A6 Page of

3 Performance/Functional Specifications TA = + C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀ Input Input Voltage Range: -8 Volts (V nominal) D Models 8-36 Volts (V nominal) 36-7 Volts (8V nominal) Overvoltage Shutdown: ➁ 9-3 Volts (V nominal) D Models 37- Volts (V nominal) 77-8 Volts (79V nominal) Start-Up Threshold: ➁ 9- Volts (9.3V nominal) D Models 6.-8 Volts (7V nominal) 3-36 Volts (3V nominal) Undervoltage Shutdown: ➁ Volts (9.3V nominal) D Models 6-7 Volts (6.V nominal) 3.-3 Volts (3V nominal) Input Current: Normal Operating Conditions See Ordering Guide Standby Mode: Off, OV, UV, Thermal Shutdown ma typical Input Reflected Ripple Current: Source Impedance <., no external input fi ltering map-p (map-p typical) D/ map-p (map-p typical) Internal Input Filter Type Pi (.µf -.7µH -.6µF) Reverse-Polarity Protection: ➁ minute duration, 6A maximum D Models minute duration, A maximum minute duration, A maximum On/Off Control (Pin ): ➁ ➂ ➄ D, D & On = open or 3V to +VIN, IIN = µa max. Off = -.8V, IIN = ma max. VOUT Accuracy: V ±3% maximum 3.3V ±.% maximum Minimum Loading Per Specification No load, see Performance Specifi cations Ripple/Noise (MHz BW) ➁ ➃ See Ordering Guide Line/Load Regulation ➁ See Ordering Guide Efficiency See Ordering Guide / Effi ciency Curves Cross Regulation: ➁ V (V@.6A, 3.3V@.7-7A) ±6% maximum 3.3V (3.3V@.7A, V@.6-6A) ±.% maximum Trim Range ➁ ±% Isolation Voltage: Input-to- Vdc minimum Isolation Capacitance 7pF Isolation Resistance M Primary to Secondary Insulation Level D/D Models Operational Basic Temperature Coefficient ±.%/per C Current Limit Inception: ➁ 9% VOUT A) Amps 98.% VOUT A).3-.7 Amps Mixed Voltage, V AND 3.3V, x (continued) Short Circuit Current: ➁ V Amps average, continuous 3.3V 6 Amps average, continuous Overvoltage Protection: ➁ Magnetic feedback V 6.8 volts 3.3V.Volts Maximum Capacitive Loading 3.3V µf V 7µF D, 3.3V µf V µf Dynamic Characteristics Dynamic Load Response ➁ V (-% load step to % VOUT) 3µsec maximum 3.3V (-% load step to.% VOUT) 3µsec maximum Start-Up Time ➁ VIN to VOUT On/Off to VOUT Switching Frequency MTBF ➅ D/ Operating Temperature (Ambient) ➁ Without Derating: D Models With Derating Environmental msec maximum msec maximum 8kHz (±khz) Bellcore, ground fi xed, full power, + C operating ambient temperature.3 million hours.67 million hours to + C to +6 C to +68 C To + C (See Derating Curves) Case Temperature Maximum Operational + C For Thermal Shutdown ➁ + C minimum, +7 C maximum Storage Temperature to + C Flammability UL 9V- Physical Dimensions " x " x." (.8 x.8 x.3mm) Internal Case Connection D/D Models Input (Pin ) +Input (Pin ) Case Material Corrosion resistant steel with non-conductive, epoxy-based, black enamel fi nish and plastic baseplate Pin Material Gold-plated copper alloy Weight.7 ounces (76. grams) ➀ Balanced full-load is A. All models are specifi ed with external µf ceramic output capacitors. ➁ See Technical Notes/Graphs for details. ➂ Applying a voltage to On/Off Control (pin ) when no input power is applied to the converter may cause permanent damage. ➃ noise may be further reduced with the installation of additional external output capacitors. See Technical Notes. ➄ On/Off control is designed to be driven with open collector or by appropriate voltage levels. Voltages must be referenced to the input return pin ( Input). ➅ Demonstrated MTBF available on request. MDC_BWR 33W Models.A6 Page 3 of

4 Absolute Maximum Ratings Input Voltage Continuous: "D" Models 3 Volts "D" Models Volts "D8" Models 8 Volts Transient (msec): "D" Models Volts "D" Models Volts "D8" Models Volts Input Reverse-Polarity Protection ➁ Input Current must be limited. minute duration. Fusing recommended. "D" Models 6 Amps "D" Models Amps "D8" Models Amps Current ➁ Current limited. Devices can withstand an indefi nite output short circuit. On/Off Control (Pin ) Max. Voltages Referenced to Input (pin ) +VIN Storage Temperature to + C Lead Temperature (Soldering, sec.) +3 C These are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifi cations Table is not implied, nor recommended. TECHNICAL NOTES V & 3.3V Regulation The BWR 33 Watt Series converters are designed such that both the V and 3.3V outputs share a common regulation feedback control loop. Though the feedback loop is infl uenced by both outputs, the 3.3 Volt output is dominant. As a result, the 3.3 Volt regulation (%) is superior to the Volt regulation (.%). The converters are specifi ed for load regulation of % to % loading and for no-load to % loading. Operation below % of full load mandates an increase in the regulation tolerance of ±.% for 3.3 Volt output and an increase of ±% for the Volt output. A slight increase in switching noise may also be observed for operation below % loading. Operation with a full load on 3.3 Volt output and light to no load on Volt output is the most demanding for +V regulation. Under such conditions the internal "bleeder" circuit is activated to provide an internal load thereby keeping regulation within the published specifi cations. The bleeder is activated gradually so as not to cause any erratic behavior on the converters outputs. A slight degradation in effi ciency will occur while this internal load is activated. Filtering and Noise Reduction The BWR 33 Watt Series Converters achieve their rated ripple and noise specifi cations with the use of μf output capacitors. In critical applications, input/output noise may be further reduced by installing additional external I/O capacitors. Input capacitors should be selected for bulk capacitance, low ESR and high rms-ripple-current ratings. capacitors should be selected for low ESR and appropriate frequency response. All caps should have appropriate voltage ratings and be located as close to the converter as possible. Start-Up Time The VIN to VOUT start-up time is the interval of time where the input voltage crosses the turn-on threshold point, and the fully loaded output voltage enters Mixed Voltage, V AND 3.3V, x and remains within its specifi ed accuracy band. Actual measured times will vary with input source impedance, external input/output capacitance, and the slew rate of the input voltages. The BWR-/6-3.3/7 Series implements a soft start circuit that limits the duty cycle of the PWM controller at power up, thereby limiting the Input Inrush current. The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. The specifi cation defi nes the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specifi ed accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold Under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the Start-Up Threshold Voltage (3V for "D8" models). Once operating, devices will not turn off until the input voltage drops below the Undervoltage Shutdown limit (3V for "D8" models). Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built in hysteresis prevents any unstable on/off situations from occurring at a single input voltage. Input voltages exceeding the input overvoltage shutdown specifi cation listed in the Performance/Functional Specifi cations will cause the device to shutdown. A built-in hysteresis of.6 to.6 Volts for all models will not allow the converter to restart until the input voltage is suffi ciently reduced. On/Off Control The On/Off Control (pin ) may be used for remote on/off operation. As shown in Figure, the control pin is referenced to the Input (pin ) and will be internally pulled to a high state. The standard BWR model (no suffi x) is designed so that it is enabled when the control pin is left open and disabled when the control pin is pulled low (less than +.8V relative to Input). Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain circuit (optically isolated if appropriate). The drive circuit should be able to sink approximately ma for logic low. The on/off control function is designed such that the converter can be disabled while the input power is ramping up, and then "released" once the input has stabilized. +INPUT ON/OFF CONTROL INPUT RA RB D RA = 3.8kΩ, RB = 6.83kΩ D RA = kω, RB = 9.7kΩ D8 RA = kω, RB =.3kΩ Figure. Internal Circuitry for On/Off Control MDC_BWR 33W Models.A6 Page of

5 Mixed Voltage, V AND 3.3V, x Current Limiting When power demands from either output fall within 6% to 8% of the rated output current, the DC/DC converter will go into a current limiting mode. In this condition both output voltages will decrease proportionately with increases in output current, thereby maintaining a somewhat constant power dissipation. This is commonly referred to as power limiting (see Figures a and b). Current limit inception is defi ned as the point where the full-power output voltage falls below the specifi ed tolerance. If the load current being drawn from the converter is signifi cant enough, the unit will go into a short circuit condition. See "Short Circuit Condition." Ouput Voltages (Volts) 3 Typical Current Limiting Characteristics for 3.3V VOUT Average Ouput Current (Amps) VIN NOM, VIN LO All Models VIN HI D, D Models VIN HI Figure a. Current Limiting Characteristics for 3.3V Typical Current Limiting Characteristics for V 7mA) Short Circuit Condition When a converter is in current limit mode the output voltages will drop as the output current demand increases (see fi gures a and b). If the output voltage drops too low, the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. Following a time-out period of to milliseconds, the PWM will restart, causing the output voltages to begin ramping to their appropriate values. If the short-circuit condition persists, another shutdown cycle will be initiated. This on/off cycling is referred to as hiccup mode. The hiccup cycling reduces the average output current, thereby preventing internal temperatures from rising to excessive levels. The BWR is capable of enduring an indefi nite short circuit output condition. Thermal Shutdown These BWR converters are equipped with Thermal Shutdown Circuitry. If the internal temperature of the DC/DC converter rises above the designed operating temperature, a precision temperature sensor will power down the unit. When the internal temperature decreases below the threshold of the temperature sensor the unit will self start. Overvoltage Protection Both output voltages are monitored for an overvoltage condition via magnetic coupling to the primary side. If either output voltage should rise to a level which could be damaging to the load circuitry, the sensing circuitry will power down the PWM controller causing the output voltages to decrease. Following a timeout of to milliseconds the PWM will restart, causing the output voltages to ramp to their appropriate values. If the fault condition persists, and the output voltages again climb to excessive levels, the overvoltage circuitry will initiate another shutdown cycle. This on/off cycling is referred to as "hiccup" mode. Isolation/Case Connection The BWR 33 Watt Series V and 3.3V outputs (pins & 7) and return (pin 6) are isolated from the +VIN and VIN inputs (pins & ) via a transformer and an opto-coupled transistor. Case connections are made internal to the DC/DC converter. "D & D" cases are connected to Input (pin ), "D8" to +Input (pin ) Ouput Voltages (Volts)... VIN NOM, VIN LO All Models VIN HI D, D Models VIN HI VOUT Average Ouput Current (Amps) Figure b. Current Limiting Characteristics for V MDC_BWR 33W Models.A6 Page of

6 Input Reverse-Polarity Protection Upon applying a reverse-polarity voltage to the DC/DC converter, an internal diode will be forward biased, drawing excessive current from the power source. Therefore, it is required that the input current be limited be either an appropriately rated input fuse or a current limited power source. Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of a sustained, non-current-limited, input-voltage polarity reversal exists. For DATEL BWR 33 Watt Series Converters, slow blow fuses are recommended with values no greater than the following. VIN Range Fuse Value "D" Models 6 Amps "D" Models Amps "D8" Models Amps It is recommended that fuses be installed in the +Input line. Trimming Voltages These BWR converters have a trim capability (pin 8) that allow users to adjust the output voltages ±%. A trim adjustment will cause an equal percentage of change in both outputs. Adjustments to the output voltages can be accomplished via a trim pot Figure 3 or a single fi xed resistor as shown in Figures and. A single fi xed resistor can increase or decrease the output voltage depending on its connection. Fixed resistors should be metal-fi lm types with absolute TCR s less than ppm/ C to minimize sensitivity to changes in temperature. A single resistor connected from the Trim Pin (pin 8) the +3.3V (pin 7), see Figure, will decrease the output voltages. A resistor connected from the Trim Pin (pin 8) to Return (pin 6) will increase the output voltages. Table shows the typical Trim Resistor values for output voltage changes of through %. Trim adjustment greater than % can have an adverse affect on the converter s performance and is not recommended. Trim Down Trim Up % %.k 3.7k % 9.k.3k 3% 6.k 3.6k % 38.k.k % 7.k.3k Table. Percentage of Voltage Change vs Trim Resistor Value (Ohms) Mixed Voltage, V AND 3.3V, x +INPUT INPUT ON/OFF CONTROL +INPUT INPUT ON/OFF CONTROL +INPUT INPUT ON/OFF CONTROL +V OUTPUT OUTPUT RETURN +3.3V OUTPUT TRIM +V OUTPUT OUTPUT RETURN +3.3V OUTPUT TRIM +V OUTPUT OUTPUT RETURN +3.3V OUTPUT TRIM kω - Turns Figure 3. Trim Connections using a Trimpot 7 R TRIM DOWN +V LOAD +3.3V LOAD R TRIM UP +V LOAD +3.3V LOAD +V LOAD +3.3V LOAD Figure. Decrease Voltage Trim Connections Using A Fixed Resistor Trim Down 3.(VO.73) RT (k ) = ( ) 3 DOWN 3.3 VO Figure. Increase Voltage Trim Connections Using A Fixed Resistor Trim Up ( VO RT UP (k ) = ) Note: Accuracy of adjustment is subject to the tolerances of resistor values, reference accuracy and factory-adjusted output accuracy. VO = desired output voltage. MDC_BWR 33W Models.A6 Page 6 of

7 Typical Performance Curves Mixed Voltage, V AND 3.3V, x D Model Input Ripple Current (VIN = 8V, 3A, 3.3V@.A, no external filtering, source impedance <.Ω.) D, D, Ripple and Noise (PARD) (VIN = nominal, V@3A, external µf output capacitors.) V Ripple/Noise mv/div MHz BW ma/div 3.3V Ripple/Noise mv/div MHz BW µsec/div µsec/div D Model Input Ripple Current (VIN = 36V, 3A, 3.3V@.A, no external filtering, source impedance <.Ω.) Ripple and Noise (PARD) (VIN = nominal, V@A, 7A, external µf output capacitors.) V Ripple/Noise mv/div MHz BW ma/div 3.3V Ripple/Noise mv/div MHz BW µsec/div µsec/div D8 Model Input Ripple Current (VIN = 7V, 3A, 3.3V@.A, no external filtering, source impedance <.Ω.) Ripple and Noise (PARD) (VIN = nominal, V@ 6A, A, external µf output capacitors.) V Ripple/Noise mv/div MHz BW ma/div 3.3V Ripple/Noise mv/div MHz BW µsec/div µsec/div MDC_BWR 33W Models.A6 Page 7 of

8 Typical Performance Curves Mixed Voltage, V AND 3.3V, x D, D, D, D, V Half-Load to Full-Load Transient Response (VIN = nominal, 3.3V@ 7mA, external µf output capacitors.) 3.3V Half-Load to Full-Load Transient Response (VIN = nominal, V@ 6mA, external µf output capacitors.) V mv/div 3.3V mv/div 6A 7A Current A/div 3A Current A/div 3.A µsec/div µsec/div V Full-Load to Half-Load Transient Response (VIN = nominal, 3.3V@ 7mA, external µf output capacitors.) 3.3V Full-Load to Half-Load Transient Response (VIN = nominal, V@ 6mA, external µf output capacitors.) V mv/div 3.3V mv/div 6A 7A Current A/div 3A Current A/div 3.A µsec/div µsec/div Cross Regulation Effects on +3.3VOUT (Reference Point 3.9A, A) Cross Regulation Effects On +VOUT (Reference Point A, 3.9A).8. Percentage of Change on 3.3 VOUT (%) A 6A A Volt Current (Amps) A A Percentage of Change in + VOUT (%) A A Volt Current (Amps) A A MDC_BWR 33W Models.A6 Page 8 of

9 Typical Performance Curves Mixed Voltage, V AND 3.3V, x D, D, D, D, V V/div 3.3V V/div V V/div 3.3V V/div VIN Remote On/Off (Pin ) msec/div msec/div 9 8 D Volt Efficiency vs. Line and Load 6mA) VIN = V D, D/D8-3.3 Volt Efficiency vs. Line and Load 6mA) VIN = MIN Efficiency (%) VIN = 8V VIN = V Efficiency (%) VIN = MAX VIN = NOMINAL V Current (Amps) V Current (Amps) 9 8 D - Volt Efficiency vs. Line and Load 7mA) VIN = V D/D8 - Volt Efficiency vs. Line and Load 7mA) VIN = MIN Efficiency (%) VIN = 8V VIN = V Efficiency (%) VIN = MAX VIN = NOMINAL V Current (Amps) V Current (Amps) MDC_BWR 33W Models.A6 Page 9 of

10 Temperature Derating and Electrical Performace Curves Mixed Voltage, V AND 3.3V, x D Models Power vs. Ambient Temperature VIN = V, Natural Convection Air flow Power vs. Ambient Temperature VIN = V, Natural Convection Air flow Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, Power vs. Ambient Temperature VIN = 8V, Natural Convection Air flow Power vs. Ambient Temperature VIN = 36V, Natural Convection Air flow Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, Power vs. Ambient Temperature VIN = Nominal, Power vs. Ambient Temperature VIN = Nominal, Power (Watts) Natural Convection Air FlowLoading lfm Air Flow 3lfm Air Flow Power (Watts) Natural Convection Air FlowLoading lfm Air Flow 3lfm Air Flow MDC_BWR 33W Models.A6 Page of

11 Temperature Derating and Electrical Performace Curves Mixed Voltage, V AND 3.3V, x Power vs. Ambient Temperature VIN = 8V, Natural Convection Air flow Power vs. Ambient Temperature VIN = Nominal, Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, Power (Watts) Natural Convection Air FlowLoading lfm Air Flow 3lfm Air Flow Power vs. Ambient Temperature VIN = 7V, Natural Convection Air flow 3 3 Power (Watts) Loading 7A) Loading 3.7A, Loading Loading 6A, MDC_BWR 33W Models.A6 Page of

12 Mixed Voltage, V AND 3.3V, x Options and Adaptations Optional Functions The dual output BWR 33W DC/DC converters offer two mechanical options. Per the Ordering Guide on page, the trailing DXX in each part number pertains to the base part number. Part-number suffi xes are added after the DXX, indicating the selection of standard options. The resulting part number is a standard product and is available to any customer desiring that particular combination of options, as described below. Suffix Description Blank On/Off Control function with positive polarity in pin position. The pin length is. inches (.8 mm). L L Trim the pin length to. ±. inches (.79 ±.mm). This option requires a minimum order quantity. Trim the pin length to. ±. inches (3.68 ±.mm). This option requires a minimum order quantity. Adaptations There are various additional confi gurations available on BWR 33W DC/DC s. Because designating each of them with a standard part-number suffi x is not always feasable, such are designated by DATEL in assigning a -digit adaptation code after the part-number suffi xes. Once a confi guration has been requested by a customer and created by DATEL, the resulting product is available to any customer as a standard off-the-shelf product. Contact DATEL directly if you are interested in your own set of options/adaptations. Our policy for minimum order quantities may apply. Consequently, the following product is offered for sale: BWR-/6-3.3/7-D8-37 Standard product, 8VIN, V/6A and 3.3V/7A outputs with modifi ed case/pin out CA/P6A (LW6FA compatible), negative On/Off logic, modifi ed Trim function for 3.3VOUT (no trim for VOUT) and trimmed pin length to. inches (.8 mm). MECHANICAL SPECIFICATIONS.8 (.9). (.8). (.). ±. (.8 ±.). (.6) Model BWR-/6-3.3/7-D8-37. (.8) Case CA. ±. DIA. (.6 ±.).8 (.7) BOTTOM VIEW Dimensions in inches (mm) I/O Connections Pin Function P6A +Input Input 3 No Pin On/Off Control +3.3V 6 Return 7 +V V Trim (.). (3.8) 3 EQ. (.6). (.6) PLASTIC CASE STANDOFF. (.). (.8) Murata Power Solutions, Inc. 9 Flanders Road, Westborough, MA 8 U.S.A. ISO 9 and REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. 8 Murata Power Solutions, Inc. MDC_BWR 33W Models.A6 Page of