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High Input Voltage 10A PWM Converter With Low Iq

  • Adjustable Output Voltage from +0.8V to +12V
- 0.8V Reference Voltage
- ±1% Accuracy over Temperature
  • Operates from An Input Battery Voltage Range of +2.7V to +28V
  • 10A Continous Output Current
  • 12A Peak Output Current
  • Power-On-Reset Monitoring on VCC pin
  • Excellent line and load transient responses
  • PFM mode for increased light load efficiency
  • Programmable PWM Frequency from 100kHz to 1000kHz
  • Integrated 22mΩ at VCC=5V N-Channel MOSFET For High Side
  • Integrated 7mΩ at VCC=5V N-Channel MOSFET For Low Side
  • Integrated Bootstrap Forward P-CH MOSFET
  • External Adjustable Soft-Start and Soft-Stop
  • Selectable Forced PWM or automatic PFM/PWM mode
  • Power Good Monitoring
  • 70% Under-Voltage Protection
  • 125% Over-Voltage Protection
  • Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
  • Over-Temperature Protection
  • TQFN-22A 4mmx4mm package
  • Lead Free and Green Device Available (RoHS Compliant)

General Description
The APW8712E is a 10A, synchronous, step-down converter with integrated 22mΩ N-channel High-Side MOSFET and 7mΩ Low-Side MOSFET. The APW8712E steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. TheAPW8712E provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the APW8712E provides very high efficiency over light to heavy loads with loading modulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The APW8712E is equipped with accurate current-limit, output under-voltage, and output over-voltage protections, perfect for various applications. A Power-On-Reset function monitors the voltage on VCC to prevent wrong operation during power-on. The APW8712E has external adjustable soft-start and built-in an integrated output discharge method for soft stop. A soft-start ramps up the output voltage with programmable timing to reduce the start-up current. A soft-stop function actively discharges the output capacitors. TheAPW8712E is available in TQFN4x4-22A (Power PAK).

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