Datasheet > SGM61040

SGM61040

更新时间： 2023-09-03 20:30:37

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
19页	1177K
描述
4A High Efficiency Synchronous Buck Converter

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SGM61040 数据手册

SGM61040

4A High Efficiency

Synchronous Buck Converter

GENERAL DESCRIPTION

FEATURES

The SGM61040 is a high efficiency and miniature size

synchronous Buck converter for low input voltage

applications. This high frequency device does not need

external compensation and is a perfect solution for

compact designs. The 2.5V to 5.5V input voltage range

is suitable for almost all available battery chemistries.

For the SGM61040A version, to keep the high

efficiency in the whole load range, the device operates

in pulse width modulation (PWM) mode at normal load

and automatically enters the power-save mode (PSM)

at light loads. For the SGM61040B version, the device

operates in continuous current mode (CCM) at light and

heavy loads.

● 2.5V to 5.5V Input Voltage Range

● Adjustable Output Voltage from 0.6V to V_IN

● Adaptive Off-Time Architecture

● Up to 95% Efficiency

● Low R_DSONMOSFET Switches (28mΩ/13mΩ)

● SGM61040A: 42μA (TYP) Operating Quiescent

Current

● Ultra-Low Quiescent Current in Shutdown Mode

● Power-Save Mode at Light Loads (SGM61040A)

● Continuous Current Mode (SGM61040B)

● 100% Duty Cycle Capability for Low Dropout

● Startup with Pre-biased Output

● Output Discharge Function

● Power Good Output

This device is based on adaptive off-time architecture,

but still allows a wide range of output capacitors up to

150μF and even more. This flexibility makes the device a

good choice for system power rails supplies. The

adaptive off-time architecture provides excellent output

voltage accuracy and superb load transient response.

● Hiccup Mode Short-Circuit Protection

● Thermal Shutdown Protection

● Available in a Green TDFN-2×2-7L Package

APPLICATIONS

The SGM61040 is available in a Green TDFN-2×2-7L

package.

Battery-Powered Applications

Point-of-Load

Processor Power Supplies

Hard Disk Drives (HDD)/Solid State Drives (SSD)

TYPICAL APPLICATION

L₁

0.47μH

V_IN

V_OUT

1.8V

VIN

2.5V to 5.5V

C₁

22μF

C₂

10μF

3 × 22μF

R₁

C₃

6pF

100kΩ

SGM61040

R₃

1MΩ

R₂

GND

49.9kΩ

Power Good

Figure 1. SGM61040 Typical Application Circuit

SG Micro Corp

www.sg-micro.com

NOVEMBER 2022 – REV. A

12 3 4 5 6 7...19

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