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PDF G5698 Data sheet ( Hoja de datos )
| Número de pieza | G5698 | |
| Descripción | 1.2A Synchronous Step-Down Regulator | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Global Mixed-mode Technology Inc.
G5698
1.2MHz, 1.2A Synchronous Step-Down Regulator
Features
High Efficiency: Up to 95%
Low Quiescent Current: Only 50µA During Op-
eration
Internal Soft Start Function
1.2A Output Current
2.5V to 6V Input Voltage Range
1.2MHz 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
Applications
Cellular Telephones
Personal Information Appliances
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
Digital Still and Video Cameras
MP3 Players
Portable Instruments
General Description
The G5698 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 G5698 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 1.2MHz, 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.
Ordering Information
ORDER
NUMBER
MARKING
OUTPUT
VOLTAGE
G5698ADJRE1U
5698A
Adjustable
For other output voltage, please contact us at sales@gmt.com.tw
Note: RE: TDFN3X3-10
1: Bonding Code
U: Tape & Reel
TEMP.
RANGE
-40°C~ +85°C
PACKAGE
(Green)
TDFN3X3-10
Pin Configuration
Typical Application Circuit
EN 1
NC 2
VIN 3
GND 4
VFB 5
G5698
T he rma l
P ad
10 PGND
9 NC
8 NC
7 LX
6 NC
TDFN3X3-10
Note: Recomm end connectin g the Therma l
Pad to the GND or let it ke ep floa ti ng.
G5698
V IN
5V
VIN LX
CIN
2.2µF
CER
EN VFB
GND
V OUT = 0 .6 V • (1 +
R1
R2
)
2. 2µ H
CFB * (option )
R1
R2 80k
18 k
V OUT
3 .3 V
1 .2 A
COUT
10 µF
CER
Ver: 0.3
Aug 30, 2010
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet G5698.PDF ] | |
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