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PDF G5725 Data sheet ( Hoja de datos )
| Número de pieza | G5725 | |
| Descripción | 1MHz 1A Synchronous Step-Down Regulator | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de G5725 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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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
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet G5725.PDF ] | |
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