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MAX5075 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX5075 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page General Description The MAX5075 is a +4.5V to +15V push-pull, current-fed topology driver subsystem with an integrated oscillator for use in telecom module power supplies. The device drives two MOSFETs connected to a center-tapped transformer primary providing secondary-side, isolated, negative or positive voltages. This device features a pro- grammable, accurate, integrated oscillator with a syn- chronizing clock output that synchronizes an external PWM regulator. A single external resistor programs the internal oscillator frequency from 50kHz to 1.5MHz. The MAX5075 incorporates a dual MOSFET driver with ±3A peak drive currents and 50% duty cycle. The MOSFET driver generates complementary signals to drive external ground-referenced n-channel MOSFETs. The MAX5075 is available with a clock output frequency to MOSFET driver frequency ratio of 1x, 2x, and 4x. The MAX5075 is available in a thermally enhanced 8-pin µMAX® package and is specified over the -40°C to +125°C operating temperature range. Applications Current-Fed, High-Efficiency Power-Supply Modules Power-Supply Building Subsystems Push-Pull Driver Subsystems Features ♦ Current-Fed, Push-Pull Driver Subsystem ♦ Programmable, Accurate Internal Oscillator ♦ Single +4.5V to +15V Supply Voltage Range ♦ Dual ±3A Gate-Drive Outputs ♦ 1mA Operating Current at 250kHz with No Capacitive Load ♦ Synchronizing Clock Frequency Generation Options ♦ Thermally Enhanced 8-Pin µMAX Package ♦ -40°C to +125°C Operating Temperature Range Push-Pull FET Driver with Integrated Oscillator and Clock Output ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-3662; Rev 1; 5/07 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Pin Configuration appears at end of data sheet. PART PIN- PACKAGE TOP MARK PKG CODE fCLK/fNDRV_ RATIO MAX5075AAUA 8 µMAX-EP* AAAU U8E-2 1 MAX5075BAUA 8 µMAX-EP* AAAV U8E-2 2 MAX5075CAUA 8 µMAX-EP* AAAW U8E-2 4 *EP = Exposed paddle. Note: All devices specified for -40°C to +125°C operating temperature range. MAX5075 1nF 4.7kΩ NDRV2 DRVH DRVL GND GND VIN VIN PWM CONTROLLER SYNCIN NDRV1 VCC RT PGND I.C. CLK VCC VOUT Typical Operating Circuit µMAX is a registered trademark of Maxim Integrated Products, Inc. |
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