Converter. GS5581 Datasheet

GS5581 Datasheet PDF

Part GS5581
Description 1A Synchronous Step-Down Converter
Feature 1.5MHz, 1A Synchronous Step-Down Converter Product Description The GS5581/A are high-efficiency, hi.
Manufacture Globaltech
Datasheet
Download GS5581 Datasheet

1.5MHz, 1A Synchronous Step-Down Converter Product Descript GS5581 Datasheet
1.5MHz, 1A Synchronous Step-Down Converter Product Descript GS5581A Datasheet




GS5581
1.5MHz, 1A Synchronous Step-Down Converter
Product Description
The GS5581/A are high-efficiency, high frequency
synchronous step-down DC-DC regulator ICs
capable of delivering up to 1A output currents. The
GS5581/A can operate over a wide input voltage
range from 2.3V to 6V and integrates main switch
and synchronous switch with very low RDS(ON) to
minimize the conduction loss.
It is ideal for powering portable equipment that
runs from a single cell Lithium-Ion (Li+) battery.
The output voltage can be regulated as low as
0.6V.
The GS5581/A can also run at 100% duty cycle for
low dropout operation, extending battery life in
portable system. This device offers two operation
modes, PWM mode and PFM Mode switching
control, which allows a high efficiency over the
wider range of the load.
Block Diagram
Features
„ High Efficiency: Up to 96%
„ 1.5MHz Constant Frequency Operation
„ 1A Output Current
„ No Schottky Diode Required
„ 2.3V to 6V Input Voltage Range
„ Adjustable Output Voltage Range
Options from 0.6V to VIN
„ 100% Duty Cycle Low Dropout Operation
„ Low Quiescent Current: 35μA
„ Slope Compensated Current Mode Control
for Excellent Line and Load Transient
Response
„ Short Circuit Protection
„ Thermal Fault Protection
„ Inrush Current Limit and Soft Start
„ <1μA Shutdown Current
„ Tiny DFN2x2-6L and SOT-23-5L Packages
„ RoHS Compliant, 100%Pb & Halogen Free
Applications
„ Cellular and Smart Phones
„ Wireless and DSL Modems
„ PDAs
„ Digital Still and Video Cameras
„ MP3 Players
www.gs-power.com 1



GS5581
Packages & Pin Assignments
Packages
(Top View)
GS5581FAF
(Top View)
GS5581AFAF
GS5581LAF
GS5581LBF
Pin
Assignment
EN
GND
LX
VIN
FB
NC
Chip Enable
Ground
Pin for Switching
Power Input
Feedback
No Internal
Connection
Ordering Information
2
57
4
3
6
1
4
267
1
5
3
-
Package Code
Voltage Code
Pb Free Code
GS 5581 A F XX F
Part Number
GS5581FAF
GS5581AFAF
GS5581LAF
GS5581LBF
Output Voltage
ADJ
ADJ
ADJ
ADJ
13
22
35
41
54
--
GS Brand Name
Part Number
5581A only
Package
DFN2x2-6L
DFN2x2-6L
SOT-23-5L
SOT-23-5L
www.gs-power.com
2




@ 2014 :: Datasheetspdf.com ::
Semiconductors datasheet search & download site (Privacy Policy & Contact)