Datasheet > SGM61220

SGM61220

更新时间： 2023-09-03 20:35:02

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
17页	1386K
描述
4.5V to 28V Input, 2A Output, Synchronous Buck Converter

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SGM61220 数据手册

SGM61220

4.5V to 28V Input, 2A Output,

Synchronous Buck Converter

GENERAL DESCRIPTION

FEATURES

● Wide 4.5V to 28V Input Voltage Range

● 2A Continuous Output Current

● Integrated 66mΩ/36mΩ Power MOSFETs

● Low Quiescent Current: 25μA (TYP)

● Shutdown Current: 2μA (TYP)

The SGM61220 is a synchronous Buck converter with a

wide input voltage range of 4.5V to 28V. This device can

deliver up to 3A to the output over a wide input voltage.

It is an easy-to-use device with power switches and peak

current mode control compensation all integrated in a

small 6-pin package. A typical 5ms soft-start ramp is also

included to minimize the inrush current.

● 5ms Internal Soft-Start Time

● Fixed 410kHz Switching Frequency

● Pulse Skip Mode and PWM Mode

● Peak Current Mode Control

This device employs cycle-by-cycle peak current limit,

output over-voltage protection and thermal shutdown

with auto recovery. The current limit is implemented for

both switches and has foldback feature to prevent

overheating (and thermal shutdown) when an output short

is detected. Auto recovery after over-current, output short,

overheating or over-voltage fault maintains the system

operational with no shutdown.

● Internal Loop Compensation

● Over-Current Protection for Both MOSFETs

● Output Over-Voltage Protection

● Adjustable Input Under-Voltage Lockout

● Thermal Shutdown with Auto Recovery

● Available in a Green TSOT-23-6 Package

This converter has a fixed 410kHz switching frequency

that minimizes the EMI noise problems. However the

actual frequency drops during PSM (pulse skip mode)

to maximize efficiency at light load. It also drops in

some fault conditions.

APPLICATIONS

12V Distributed Power Supply Buses

Industrial and Consumer Applications

White Goods

Audio Equipment

The SGM61220 is available in a Green TSOT-23-6

package.

Set Top Boxes

Digital Television Printers

TYPICAL APPLICATION

BOOT

V_IN

VIN

C_BOOT

V_OUT

C_IN

SGM61220

C_OUT

R_FB1

GND

R_FB2

Figure 1. Typical Application Circuit

SG Micro Corp

APRIL 2022 – REV. A. 1

www.sg-micro.com

12 3 4 5 6 7...17

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