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G5725 の電気的特性と機能

G5725のメーカーはGlobal Mixed-mode Technologyです、この部品の機能は「1MHz 1A Synchronous Step-Down Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 G5725
部品説明 1MHz 1A Synchronous Step-Down Regulator
メーカ Global Mixed-mode Technology
ロゴ Global Mixed-mode Technology ロゴ 




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G5725 Datasheet, G5725 PDF,ピン配置, 機能
Global Mixed-mode Technology
G5725
1MHz 1A Synchronous Step-Down Regulator
Features
„ High Efficiency: Up to 93%
„ Low Quiescent Current: Only 50µA During Op-
eration
„ Internal Soft Start Function
„ 1A Output Current
„ 2.5V to 6V Input Voltage Range
„ 1MHz Switching Frequency
„ No Schottky Diode Required
„ 100% Duty Cycle in Dropout Operation
„ 0.6V Reference Allows Low Output Voltages
„ <1µA Shutdown Current
„ Current Mode Operation for Excellent Line and
Load Transient Response
„ Over Temperature Protected
„ RoHS Compliant
General Description
The G5725 is a high efficiency monolithic synchronous
buck regulator using a constant frequency, current
mode architecture. Supply current during operation is
only 50µA and drops to <1µA in shutdown. The 2.5V
to 6V input voltage range makes the G5725 ideally
suited for single Li-Ion battery-powered applications.
100% duty cycle provides low dropout operation, ex-
tending battery run time in portable systems. Switching
frequency is internally set at 1MHz, allowing the use of
small surface mount inductors and capacitors. The
internal synchronous switch increase efficiency and
eliminates the need for an external Schottky diode.
Built-in soft start function eliminates in-rush current
that could damage the system.
Applications
„ Cellular Telephones
„ Personal Information Appliances
„ Microprocessors and DSP Core Supplies
„ Wireless and DSL Modems
„ Digital Still and Video Cameras
„ MP3 Players
„ Portable Instruments
Pin Configuration
EN 1
G5725
5 VFB
GND 2
LX 3
4 VIN
SOT-23-5/TSOT-23-5
Typical Application Circuit
VIN
4~6V
G5725
4
VIN
3
LX
CIN
2.2µF
CER
1 EN
VOUT
=
0.6V
×
(1+
R1
R2
)
VFB
GND
2
5
2.2µH
CFB* (option)
R1
R2 82k
18k
VOUT
3.3V
300mA
COUT
10µF
CER
Ver: 1.0
May 04, 2012
TEL: 886-3-5788833
http://www.gmt.com.tw
1

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共有リンク

Link :


部品番号部品説明メーカ
G5723

Synchronous Buck Converter

Global Mixed-mode Technology
Global Mixed-mode Technology
G5723B

1A Synchronous Buck Converter

Global Mixed-mode Technology
Global Mixed-mode Technology
G5725

1MHz 1A Synchronous Step-Down Regulator

Global Mixed-mode Technology
Global Mixed-mode Technology
G5728

1MHz 1A Synchronous Step-Down Regulator

Global Mixed-mode Technology
Global Mixed-mode Technology


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