Datasheet > G5207

G5207

更新时间： 2022-04-06 16:13:19

品牌	Logo	应用领域
致新 - GMT		控制器
页数	文件大小	规格书
1页	354K
描述
24V Input Voltage-Mode Buck PWM Controller

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G5207 数据手册

Global Mixed-mode Technology Inc.

G5207

24V Input Voltage-Mode Buck PWM Controller

Features

General Description

ꢀ

Drives Two N-Channel MOSFETs

Operates at 5V 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 R_DS(ON)

The G5207 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 G5207 inte-

grates all of the control, and protection functions into a

single package.

The G5207 provides simple, single feedback loop,

voltage-mode control with fast transient response. It

includes a 300KHz free-running triangle-wave oscilla-

tor. The error amplifier features a 15MHz gain-band-

width product which provides high converter band-

width for fast transient performance. The resulting

PWM duty ratio ranges from 0% to 80%. The refer-

ence voltage is 0.8V, 2% accuracy.

ꢀ

Output Under-Voltage Protection

Applications

ꢀ

16V to 30V Input High Power DC-DC Regulators

Low-Voltage Distributed Power Supplies

The G5207 has internal soft start and executes cy-

cle-by-cycle current limit during soft start interval. The

G5207 monitors the current by using the R_DS(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 trig-

ger hiccup mode protection.

Ordering Information

ORDER

NUMBER

G5207P11U

TEMP.

RANGE

-40°C~ +85°C

PACKAGE

(Green)

SOP-8

MARKING

G5207

Note: P1: SOP-8

1: Bonding Code

U: Tape & Reel

Pin Configuration

Typical Application Circuit

G5207

16~30V

G5207

10Ω

220ꢀF

BOOT

UGATE

GND

VCC

BOOT

4.7ꢀF

OCSET

0.1ꢀF

6ꢀH

R_OCSET

SHDN

UGATE

V_O=13.5V

OCSET

LGATE

2000ꢀF

10nF

620Ω

VCC

LGATE

GND

39Ω

SOP-8

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.4

Jul 18, 2011

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