EP3003_15 Datasheet, PDF (2/13 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.
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.03
2