Datasheet > G5503-50P11U

G5503-50P11U

更新时间： 2024-11-14 19:55:51

品牌	Logo	应用领域
致新 - GMT		开关光电二极管
页数	文件大小	规格书
1页	154K
描述
Switching Regulator, Voltage-mode, 300kHz Switching Freq-Max, PDSO8, SOP-8

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数据手册

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G5503-50P11U 数据手册

Global Mixed-mode Technology Inc.

G5503

300KHz, 3A Buck Converter

The G5503 is a voltage-mode buck PWM converter

capable of driving up to 3A loads over a wide input

supply range. High efficiency is obtained through the

use of a low R_DS(ON)P-channel power switch. The in-

ternal compensation makes feedback control have

excellent line and load regulation characteristics with-

out external designs.

Features

Voltage Mode Asynchronous PWM Control

3.3V, 5V and Adjustable Output Version

Operation Voltage can be up to 20V

Adjustable Version Output Voltage Range, 0.8V

to 16V±2%

300KHz Fixed Frequency Internal Oscillator

Built-in Switching Transistor on Chip

3A Output Load Current

Thermal Shutdown and Current Limit Protec-

tion

ON/OFF Shutdown Control

Iq of Low Power Standby Mode 1µA

Available in SOP-8 Packages

It uses a fixed switching frequency of 300KHz. The

output voltage is 3.3V, 5V and an user-programmable

version via an external resistive voltage divider. The

built-in soft-start can reduce inrush current on the input

source at turn on.

The device also has built-in current-limit, thermal

shutdown, under-voltage lockout and an ON/OFF

logic-control that can power down the regulator to a

shutdown mode. When current limit function occurred

and V_FBis down to 0.3V below, the device changes

switching frequency to 120KHz to protect IC from

damage.

Applications

Simple high-efficiency step-down regulator

On-card switching regulators

Positive to negative converter

G5503 is available in SOP-8 package.

General Description

Ordering Information

ORDER

NUMBER

TEMP.

RANGE

PACKAGE

(Pb free)

SOP-8

MARKING

VOLTAGE

G5503-ADJP11U

G5503-33P11U

G5503-50P11U

5503A

5503B

5503C

Adjustable

3.3V

-40°C~85°C

SOP-8

5.0V

SOP-8

Note: P1: SOP-8

1: Bonding Code

U: Tape & Reel

Pin Configuration

Typical Application Circuit

G5503

33µH

V_OUT

3.3V/2A

V_IN

6V~18V

SCD36

1µF

GND

220µF

R1/31.25K

R2/10K

1µF

470µF

GND

SOP-8

V_OUT= 0.8 x ( 1 +

)

* ^optional

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.1

May 02, 2008

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