Datasheet > SD6251D6G-R

SD6251D6G-R

更新时间： 2024-09-25 01:23:19

品牌	Logo	应用领域
首鼎半导体 - SHOUDING		/
页数	文件大小	规格书
9页	576K
描述
5V, 2.5A 550KHz High Efficiency Low Ripple Synchronous Step-Up Converter

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SD6251D6G-R 数据手册

SD6251

2.5A 55

5V,

0KHz High Efficiency Low Ripple

Synchronous Step-Up Converter

Description

Features

The SD6251 is a high efficiency, fixed frequency

550KHz, current mode PWM boost DC/DC converter

which could operate battery such as input voltage

down to 2.5V. The converter output voltage can be

adjusted to a maximum of 5.25V by an external

resistor divider. Besides the converter includes a

0.08Ω N-channel MOSFET switch and 0.12Ω

P-channel synchronous rectifier. So no external

Schottky diode is required and could get better

efficiency near 93%.

 High Efficiency up to 93%

 Low R_DS(ON) Integrated Power MOSFET

 NMOS 80mΩ / PMOS120mΩ

 Wide Input Voltage Range: 2.5V to 5.5V

 Fixed 550KHz Switching Frequency

 Low-Power Mode for Light Load Conditions

 ±2.0% Voltage Reference Accuracy

 PMOS Current Limit for Short Circuit Protection

 Low Quiescent Current

 Output Ripple under 200mV. (Scope Full

Bandwidth)

 Fast Transient Response

The converter is based on a fixed frequency, current

mode, pulse-width-modulation PWM controller that

goes automatically into PSM mode at light load.

 Built-In Soft Start Function

 Over-Temperature Protection with Auto Recovery

 Output Overvoltage Protection

 Space-Saving SOT-23-6 Package

When converter operation into discontinuous mode,

the internal anti-ringing switch will reduce

interference and radiated electromagnetic energy.

Applications

The SD6251 is available in a space-saving SOT-23-6

package for portable application.

 Portable Power Bank

 Wireless Equipment

 Handheld Instrument

 GPS Receiver

Pin Assignments

Ordering Information

SD6251□□□ □

Package (SOT-23-6)

R: Tape/Reel

VIN

OUT EN

G: Green

(Marking)

Package Type

D6: SOT-23-6 and marking

LX GND FB

Figure 1. Pin Assignment of SD6251

Ver 1.0 Oct 2012

http://www.sdw-tw.com

12 3 4 5 6 7...9

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