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APW7108

ANPEC
Part Number APW7108
Manufacturer ANPEC
Description Dual Mobile-Friendly PWM Controller
Published Aug 17, 2020
Detailed Description APW7108 Dual Mobile-Friendly PWM Controller Features • Adjustable Output Voltage up to 5.5V - 0.9V Reference Voltage -...
Datasheet PDF File APW7108 PDF File

APW7108
APW7108

Overview
APW7108 Dual Mobile-Friendly PWM Controller Features • Adjustable Output Voltage up to 5.
5V - 0.
9V Reference Voltage - ±1% Accuracy Over Temperature • Operates from an Input Battery Voltage Range of 5V to 24V or from 3.
3V/5V System Rail • Power-On-Reset Monitoring on VCC Pin • Selectable Forced PWM or Automatic PFM/PWM Mode • Constant-On-Time Control Scheme - Switching Frequency Compensation for PWM Mode - Constant Switching Frequency (CH1: 345kHz, CH2: 255KHz) in PWM Mode with DC Output Current • Excellent Line and Load Transient Responses • Adjustable Soft-Start and Soft-Stop • Power-Good Outputs for both Channels • Adjustable Current-Limit Protection - Using Sense Resistor or MOSFET’s R DS(ON) • 115% Over-Voltage Protection - No Negative Output Voltage Occurred • 70% Under-Voltage Protection • Adaptive Dead-Time Control - Sensing G-to-S Voltage of Power MOSFETs • Shutdown Control for both Channels • 28-pin SSOP (SSOP-28) and 4mmx4mm 24-lead QFN (QFN4x4-24) Packages • Lead Free and Green Devices Available (RoHS Compliant) General Description The APW7108 is a dual-channel, constant on-time, and synchronous PWM controller which drives dual Nchannel MOSFETs for each channel.
The APW7108 steps down high voltage of a battery to generate low-voltage chipset or RAM supplies in notebook computers.
The APW7108 provides excellent transient response and accurate DC voltage output in either PFM or PWM mode.
In PFM mode, the APW7108 provides very high efficiency over light to heavy loads with loading-modulated switching frequencies.
The Forced-PWM mode works nearly at constant frequency for low-noise requirements.
The APW7108 is equipped with accurate current-limit, output under-voltag, and output over-voltage protections, perfect for NB applications.
A Power-On-Reset function monitors the voltage on VCC to prevent wrong operation during power on.
A soft-start ramps up the output voltage with programmable slew rate to reduce the start-up current.
A soft-stop function active...


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