EP3003 Datasheet, PDF (1/12 Pages) Eorex Corporation – 2-CH, 600mA Synchronous Step-down Converter

EP3003
2-CH, 600mA Synchronous Step-down Converter
DESCRIPTION
The EP3003 is a dual channel, 1.5MHz constant
frequency, slope compensated current mode PWM
step-down converter. The EP3003 can supply
600mA of load current from a 2.5V to 5.5V input
voltage. Each output voltage is adjustable from
0.6V to 5V. It is ideal for powering portable
equipment that runs from a single cell lithium-Ion
(Li+) battery. Internal synchronous 0.35Ω, 1A
power switches provide high efficiency without the
need for external Schottky diodes. The EP3003
can also run at 100% duty cycle for low dropout
operation, extending battery life in portable
system. Pulse Skipping Mode operation at light
loads provides very low output ripple voltage for
noise sensitive applications. Burst Mode operation
provides higher efficiency at light loads.
APPLICATIONS
‧ Cellular and Smart Phones
‧ Microprocessors and DSP Core Supplies
‧ Wireless and DSL Modems
‧ PDAs
‧ Portable Instruments / Media Players
‧ Digital Cameras
‧ PC Cards
FEATURES
‧ High Efficiency: Up to 96%
‧ 1.5MHz Constant Switching Frequency
‧ 600mA Output Current
‧ Integrated Main Switch and Synchronous
Rectifier
‧ High Switch Current: 1A on Each Channel
‧ 2.5V to 5.5V Input Voltage Range
‧ Output Voltage as Low as 0.6V
‧ 100% Duty Cycle in Dropout
‧ Low Quiescent Current: 50μA
‧ Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
‧ Can be synchronized to an external oscillator
‧ Short Circuit Protection
‧ Power-on Reset Output
‧ Thermal Fault Protection
‧ <1uA Shutdown Current
‧ Small Thermally Enhanced 10-Pin MSOP and
3mm × 3mm DFN Packages
Typical Application
Figure 1. Basic Application Circuit for 2.5V and 1.8V Output Voltages
Rev.01
1