Converter. GS5582 Datasheet

GS5582 Datasheet PDF

Part GS5582
Description 2A Synchronous Step-Down Converter
Feature GS5582 1.0MHz, 2A Synchronous Step-Down Converter Product Description The GS5582 is a 1.0MHz consta.
Manufacture Globaltech
Datasheet
Download GS5582 Datasheet

GS5582 1.0MHz, 2A Synchronous Step-Down Converter Product D GS5582 Datasheet




GS5582
GS5582
1.0MHz, 2A Synchronous Step-Down Converter
Product Description
The GS5582 is a 1.0MHz constant frequency,
current mode step-down converter. It is ideal for
portable equipment requiring very high current up to
2A from single-cell Lithium-ion batteries while still
achieving over 90% efficiency during peak load
conditions.
The GS5582 also can run at 100% duty cycle for
low dropout operation, extending battery life in
portable systems while light load operation provides
very low output ripple for noise sensitive
applications.
The GS5582 can supply up to 2A output load
current from a 2.6V to 6.5V input voltage and the
output voltage can be regulated as low as 0.6V.The
high switching frequency minimizes the size of
external components while keeping switching
losses low.
This device offers two operation modes, PWM
control and PFM Mode switching control, which
allows a high efficiency over the wider range of the
load.
Features
„ High Efficiency: Up to 96%
„ 1.0MHz Constant Frequency Operation
„ 2A Output Current
„ No Schottky Diode Required
„ 2.6V to 6.5V Input Voltage Range
„ Output Voltage as Low as 0.6V
„ PFM Mode for High Efficiency in Light Load
„ 100% Duty Cycle in Dropout Operation
„ Low Quiescent Current: 40uA
„ Short Circuit Protection
„ Thermal Fault Protection
„ Inrush Current Limit and Soft Start
„ <1.0μA Shutdown Current
„ Tiny SOT23-5L, SOT23-6L and DFN2x2-6L
Packages
„ RoHS Compliant, 100%Pb & Halogen Free
Applications
„ Cellular and Smart Phones
„ Wireless and DSL Modems
„ PDAs
„ Portable Instruments
„ Digital Still and Video Cameras
„ PC Cards
Block Diagram
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GS5582
Packages & Pin Assignments
GS5582LAF(SOT23-5L)
GS5582LBF(SOT23-5L)
(Top View)
GS5582RF(SOT23-6L)
(Top View)
GS5582FAF(DFN2x2-6L)
Pin Name
EN
GND
LX
VIN
NC
FB
(Top View)
(Top View)
Description
Chip Enable Pin. Drive EN above 1.5V to turn on the part. Drive EN below 0.3V to
turn it off. Do not leave EN floating.
Analog ground pin.
Power Switch Output. It is the switch node connection to Inductor. This pin connects
to the drains of the internal P-ch and N-ch MOSFET switches.
Analog supply input pin.
No connected.
Output Voltage Feedback Pin. An internal resistive divider divides the output voltage
down for comparison to the internal reference voltage.
Typical Application Circuit
Figure1. GS5582 Adjustable Output Voltage Regulator
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