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APW7120

ANPEC
Part Number APW7120
Manufacturer ANPEC
Description Synchronous Buck PWM Controller
Published Jul 21, 2014
Detailed Description APW7120 5V to 12V Supply Voltage, 8-PIN, Synchronous Buck PWM Controller Features • • • Operating with Single 5~12V Sup...
Datasheet PDF File APW7120 PDF File

APW7120
APW7120


Overview
APW7120 5V to 12V Supply Voltage, 8-PIN, Synchronous Buck PWM Controller Features • • • Operating with Single 5~12V Supply Voltage or Two Supply Voltages Drive Dual Low Cost N-Channel MOSFETs - Adaptive Shoot-Through Protection Built-in Feedback Compensation - Voltage-Mode PWM Control - 0~100% Duty Ratio - Fast Transient Response General Description The APW7120 is a fixed 300kHz frequency, voltage mode, and synchronous PWM controller.
The device drives two low cost N-channel MOSFETs and is designed to work with single 5~12V or two supply voltage(s), providing excellent regulation for load transients.
The APW7120 integrates controls, monitoring, and protection functions into a single 8-pin package to provide a low cost and perfect power solution.
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls.
An internal 0.
8V reference provides low output voltage down to 0.
8V for further applications.
An built-in digital soft-start with fixed soft-start interval prevents the output voltage from overshoot as well as limits the input current.
The controller’s over-current protection monitors the output current by using the voltage drop across the low-side MOSFET’s RDS(ON), eliminating the need of a current sensing resistor.
Additional under voltage and over voltage protections monitor the voltage on FB pin for short-circuit and over-voltage protections.
The over-current protection cycles the soft-start function until 4 over-current events are counted.
Pulling and holding the voltage on OCSET pin below 0.
15V with an open drain device shuts down the controller.
• ±2% 0.
8V Reference - Over Line, Load Regulation, and Operating Temperature • • • • • Programmable Over-Current Protection - Using RDS(ON) of Low-Side MOSFET Hiccup-Mode Under-Voltage Protection 118% Over-Voltage Protection Adjustable Output Voltage Small Converter Size - 300kHz Constant Switching Frequency - Small SOP-8 Package • • • Built-In Digital Soft-Start Shutdown Co...


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