MAX5075:Push-Pull FET Driver with Integrated Oscillator and Clock Output

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 programmable, accurate, integrated oscillator with a synchronizing 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.

Key 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
MAX5075: Typical Operating Circuit
MAX5075: Typical Operating Circuit
  • Current-Fed, High-Efficiency Power-Supply Modules
  • Power-Supply Building Subsystems
  • Push-Pull Driver Subsystems
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MAX5075 Data SheetMAX5075.pdf
Part NumberApplication (VIN)VIN
Duty Cycle
Gate Drive Current
Oper. Temp.
minmaxmaxmaxmaxmaxSee Notes
MAX5075Telecom (36-72V)4.515Push-Pull150050333-40 to +125µMAX-EP/8$3.57 @1k

Part NumberNo. of DriversLogic PolarityConfig.IOUT
Rise/ Fall Time @+25°C
Package/PinsOper. Temp.
peaktypSee Notes
MAX50752MixedClock Output
Low-Side N Drive
310/10 (2000pF)µMAX-EP/8-40 to +125$3.57 @1k
Quality and Environmental Data
Related Products
  • MAX5077:Push-Pull FET Driver with Integrated Oscillator and Programmable Clock Output
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5075AAUANo Longer AvailableMAX5075AAUA+µMAX-EP,;8 pin;15.3 mm²-40°C to +125°CNo
MAX5075AAUA+ActiveµMAX-EP,;8 pin;15.3 mm²-40°C to +125°CLead Free
MAX5075AAUA+TActiveµMAX-EP,;8 pin;15.3 mm²-40°C to +125°CLead Free
MAX5075AAUA-TNo Longer AvailableMAX5075AAUA+TµMAX-EP,;8 pin;15.3 mm²-40°C to +125°CNo
MAX5075BAUANo Longer AvailableµMAX-EP,;8 pin;15.3 mm²-40°C to +125°CNo
MAX5075BAUA-TNo Longer AvailableuMAX;8 pin-40°C to +125°CSee data sheet
MAX5075CAUANo Longer AvailableµMAX-EP,;8 pin;15.3 mm²-40°C to +125°CNo
MAX5075CAUA-TNo Longer AvailableuMAX;8 pin-40°C to +125°CSee data sheet
MAX5075.pdf MAX5075
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