Datasheet > G5196

G5196

更新时间： 2024-09-25 01:23:59

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描述
High Efficiency, 6A Output, Synchronous Step Down1

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G5196 数据手册

Global Mixed-mode Technology

G5196

High Efficiency, 6A Output, Synchronous Step Down

Features

General Description

The G5196 device is a full featured 5.5V, 6A synchro-

nous step down current mode converter with two inte-

grated MOSFETs.

Two 20mΩ (typical) MOSFETs for high effi-

ciency at 6A loads

200kHz to 2MHz Switching Frequency

0.8V ± 1% Voltage Reference Over Temperature

Synchronizes to External Clock

Adjustable Soft Start

UV and OV Power Good Output

Low Operating and Shutdown Quiescent Cur-

rent

The G5196 enables small designs by integrating the

MOSFETs, implementing current mode control to re-

duce external component count, reducing inductor size

by enabling up to 2MHz switching frequency, and

minimizing the IC footprint with a small 3mm x 3mm

(4mm x 4mm) thermally enhanced TQFN package.

Safe Start-up into Pre-Biased Output

Cycle by Cycle Current Limit, Thermal and

Frequency Fold Back Protection

Thermally Enhanced 3mm × 3mm 16-pin TQFN

and 4mm × 4mm 16-pin TQFN

The G5196 provides accurate regulation for a variety

of loads with an accurate ±1% Voltage Reference

(VREF) over temperature.

Efficiency is maximized through the integrated 20mΩ

MOSFETs and 350µA typical supply current. Using the

enable pin, shutdown supply current is reduced to 2µA

by entering a shutdown mode.

Applications

Low-Voltage, High-Density Power Systems

Point of Load Regulation for High Performance

DSPs, FPGAs, ASICs and Microprocessors

Broadband, Networking and Optical Commu-

nication Infrastructure

Under voltage lockout is internally set at 2.6V, but can

be increased by programming the threshold with a

resistor network on the enable pin. The output voltage

startup ramp is controlled by the soft start pin. An open

drain power good signal indicates the output is within

93% to 107% of its nominal voltage.

Ordering Information

ORDER

Marking

TEMP.

RANGE

PACKAGE

(Green)

Frequency fold back and thermal shutdown protects

the device during an over-current condition.

NUMBER

G5196R41U

G5196R41D

G5196R81U

5196

-40°C to +85°C TQFN3X3-16

-40°C to +85°C TQFN4X4-16

Note: R4: TQFN3X3-16 R8:TQFN4X4-16

1: Bonding Code

U & D: Tape & Reel

Pin Configuration

Typical Application Circuit

G5196

VIN

G5196

3.3V to 5.5V

VINA

VIN

L_O

1.0µH

48.7KΩ

VOUT

1.8V

C_BS

0.1µF

C_I

100KΩ

10µF

VINA

C_O

22*2µF

32.4KΩ

C_D*

100KΩ

VIN

GND

Thermal

Pad

(0.803V)

80KΩ

GND

AGND

COMP

R_T

182KΩ

C_SS

0.01µF

R_C

20KΩ

C_C

C_Z*

470PF

TQFN3X3-16/TQFN4X4-16

Note: Recommend connecting the Thermal Pad to

the Ground for excellent power dissipation.

＊ Option

＊ VINA must connect to VIN

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.1

Nov 15, 2011

中文翻译

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