Datasheet > GM7109-APS8R

GM7109-APS8R

更新时间： 2024-11-02 07:01:47

品牌	Logo	应用领域
GAMMA		调节器开关
页数	文件大小	规格书
9页	150K
描述
150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS

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GM7109-APS8R 数据手册

GM7109

150KHz, 2A STEP DOWN VOLTAGE

SWITCHING REGULATORS

Description

Features

GM7109 series is designed to provide all the

active function for a step-down (buck) switching

regulator, and drives a maximum load current as

high as 2A line and load regulations. GM7109 is

available in fixed output voltages of 3.3V, 5V,

and a versatile Adjustable output version.

Standard SOP8 & PSOP8 package

3.3V, 5V, and Adjustable output versions

Adjustable version output voltage range

1.23V to 37V

V_OUTaccuracy is to ±2% under specified

input voltage the output load conditions

These regulators are simple to use and require

minimum number of external components. The

features include internal frequency compensation

and a fixed-frequency oscillator.

Input voltage range up to 40V

Requires only 4 external components with

High efficiency

The GM7109 is high-efficiency replacements for

popular three-terminal linear regulators, and is

requiring a smaller heat sink or even no need

heat sink.

TTL shutdown capability, low power

standby mode

Built-in thermal shutdown, current limit

protection

GM7109 performs well with standard inductors

from most of manufacturers, and simplifying the

design of switch-mode power supplies. External

shutdownis included with 80µA (typical) standby

current. The output switch has cycle-by-cycle

current limiting as well as thermal shutdown for

full protection under fault conditions.

Uses standard inductors

150 kHz fixed frequency internal oscillator

GM7109 operates at a switching frequency of

150 kHz which allowing smaller size filter

components than what would be needed with

lower frequency switching regulators.

GM7109 series are available in a standard 8-lead

SO package or 8 lead SO package with heat

sink.

Application

Pre-regulator for linear regulators

On-card/board switching regulators

Positive to negative converter (buck-boost)

LCD Monitors

High-efficiency step-down buck regulator

Typical Application Circuits

GM7109-5.0

Unregulated

DC Input

V_IN

regulated

68µH

output,

Output

GND

C_IN

680µF

5, 6, 7, 8

C_OUT

220µF

1N5824

www.gammamicro.com.tw

12 3 4 5 6 7...9

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