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G5201

Global Mixed-mode Technology
Part Number G5201
Manufacturer Global Mixed-mode Technology
Description 5V/12V Input Voltage-Mode Buck PWM Controller
Published Jan 11, 2016
Detailed Description Global Mixed-mode Technology Inc. G5201 5V/12V Input Voltage-Mode Buck PWM Controller Features „ Drives Two N-Channel...
Datasheet PDF File G5201 PDF File

G5201
G5201

Overview
Global Mixed-mode Technology Inc.
G5201 5V/12V Input Voltage-Mode Buck PWM Controller Features „ Drives Two N-Channel MOSFETs „ Operates at 5V to 12V Supply Voltage „ Voltage-Mode PWM Control „ Fast Transient Response „ 0.
8V, 2% Accuracy Reference Voltage „ Internal Soft Start „ Constant 300kHz Switching Frequency „ Over-Current Fault Monitors by Using Low-Side MOSFET RDS(ON) „ Output Under-Voltage Protection Applications „ High Power DC-DC Regulators „ Low-Voltage Distributed Power Supplies Ordering Information ORDER NUMBER G5201P11U Note: P1: SOP-8 1: Bonding Code U: Tape & Reel MARKING G5201 General Description The G5201 provides complete control and protection for a DC-DC converter for high power applications.
It is designed to drive two N-channel MOSFETs in a synchronous-rectified buck topology.
The G5201 integrates all of the control, and protection functions into a single package.
The G5201 provides simple, single feedback loop, voltage-mode control with fast transient response.
It includes a 300kHz free-running triangle-wave oscillator.
The error amplifier features a 15MHz gain-bandwidth product which provides high converter bandwidth for fast transient performance.
The resulting PWM duty ratio ranges from 0% to 80%.
The reference voltage is 0.
8V, 2% accuracy.
The G5201 has internal soft start and executes cycle-by-cycle current limit during soft start interval.
The G5201 monitors the current by using the RDS(ON) of the low-side MOSFET which eliminates the need for a current sensing resistor.
The under-voltage protection function monitors voltage at FB pin.
The over-current and under-voltage events after soft-start interval trigger hiccup mode protection.
TEMP.
RANGE -40°C~ +85°C PACKAGE (Green) SOP-8 Pin Configuration Typical Application Circuit BOOT 1 UGATE 2 GND 3 LGATE 4 G5201 SOP-8 8 LX 7 OCSET 6 FB 5 VCC ROCSET SHDN G5201 10Ω VCC 4.
7µF BOOT OCSET FB UGATE LX LGATE GND 5V~12V 3V~12V 220µF 0.
1µF 6µH VO=2.
5V 2000µF 68Ω 32Ω 10n...


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