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| IA NT Features Industry standard SMT package Output voltage programmable from 0.75 Vdc to 5.5 Vdc via external resistor 3 A output current Up to 95 % efficiency Small size, low profile Cost-efficient CO M Low output ripple and noise High reliability Remote on/off Output overcurrent protection (non-latching) *R oH S PL MX3A-12SA(-P) SMT Non-Isolated Power Module Description Bourns(R) MX3A-12SA(-P) is a non-isolated DC-DC converter offering designers a cost and space-efficient solution with standard features such as remote on/off, precisely regulated programmable output voltage and overcurrent protection. Specifications Parameter INPUT Voltage Current Remote ON/OFF: Low or Open = High = OUTPUT Voltage Adjustment Range Current Voltage Setpoint Accuracy Line Regulation Load Regulation Temperature Regulation Ripple (pk-pk) (20 MHz Bandwidth) Ripple (rms) Dynamic Load Response: 50 % to 100 % Load or 100 % to 50 % Load; (i/t = 2.5 A/s; 25 C) 50 % to 100 % Load or 100 % to 50 % Load; (i/t = 2.5 A/s; 25 C) GENERAL MTBF Operating Temperature Storage Temperature Switching Frequency Efficiency (Vin = 12 Vdc, TA= 25 C, Full Load) -40 -55 300 86.0 88.0 90.0 91.0 93.0 95.0 Applications Min. Nom. Max. Units Notes 8.3 12 14 2.0 Vdc Adc Vdc Vdc Vdc Adc % Vo,set % Vo,set % Vo,set % Vo,set 18 V max. for -W version Standard On Off -P Option Off On 2.4 0.75 0.0 -2.5 0.3 0.4 0.4 30 10 200 25 75 100 13,000 0.4 Vin 5.5 3.0 2.5 10 A max. 1 mA max. 0 to +85 C 1 F ceramic//10 F tantalum capacitors 1 F ceramic//10 F tantalum capacitors 1 F ceramic//10 F tantalum capacitors 2 x 100 F polymer capacitors 50 15 mVpk-pk mVrms mV s mV s kHrs +85 +125 C C kHz % % % % % % Vo,set = 1.2 Vdc Vo,set = 1.5 Vdc Vo,set = 1.8 Vdc Vo,set = 2.5 Vdc Vo,set = 3.3 Vdc Vo,set = 5.0 Vdc Intermediate Bus architecture Distributed power applications Workstations and servers Telecom equipment Enterprise networks including LANs/WANs Latest generation ICs (DSP, FPGA, ASIC) and microprocessor powered applications *RoHS Directive 2002/95/EC Jan 27 2003 including Annex. Specifications are subject to change without notice. Customers should verify device performance in their specific applications. Output Voltage Programming Via external trim resistor between Trim and GND: Rtrim = Via application of external voltage between Trim and GND: Vtrim = (0.7 - 0.0667 x {Vo - 0.7525}) [ 10.5 - 1.0 k Vo - 0.7525 ] MX3A-12SA(-P) SMT Non-Isolated Power Module Product Dimensions BOTTOM VIEW 20.3 (0.80) 4.06 (0.160) 4.06 (0.160) 4.83 (0.190) 4.57 (0.180) 8.64 (0.340) 4.57 (0.180) 4.06 (0.160) Recommended Pad Layout 17.53 (0.690) 4.06 (0.160) 4.83 (0.190) VOUT TRIM GND 8.89 (0.350) GND 8.89 (0.350) TRIM VOUT 8.64 (0.340) 11.43 (0.450) 1.5 (0.06) 1.3 (0.05) ON/OFF 0.25 (0.010) VIN RECOMMENDED PAD SIZE: 3.05 2.41 X MIN. (0.120) (0.095) 3.43 2.79 X MAX. (0.135) (0.110) VIN 1.47 (0.058) 2.29 (0.090) ON/OFF 1.5 (0.06) 1.3 (0.05) Pick and Place Location SIDE VIEW DIMENSIONS: MM (INCHES) 1.47 (0.058) 4.32 (0.170) 11.43 (0.450) 6.18 (0.243) 9.63 (0.379) TOLERANCES: 0.5 (0.02) 0.25 DECIMAL .XX (0.010) DECIMAL .X 6.80 (0.268) L1 REF. 20.32 (0.800) How to Order M X 3A - 12 S A (-P) Configuration * M = Surface Mount Device Internal Identifier Output Current (Amps) Input Voltage (V) Outputs * S = Single Output Voltage (V) * A = Adjustable Optional Positive On/Off Logic Derating Output Current vs. Local Ambient Temp & Airflow (Vin = 12 Vdc, Vo = 3.3 Vdc) 3.5 3.0 Output Current (A) 2.5 2.0 1.5 1.0 0.5 0.0 25 30 35 40 45 50 55 60 65 70 75 80 85 NC (0 LFM) Fixed output voltage parts and optional features available; contact factory. Ambient Temperature (C) Asia-Pacific: Tel: +886-2 2562-4117 * Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 * Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 * Fax: +1-951 781-5700 www.bourns.com REV. A 06/06 Specifications are subject to change without notice. Customers should verify device performance in their specific applications. |
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