EP3001 1.5MHz 600mA Step-Down Converter - eGismos - #1

• High Efficiency: Up to 96%

• 1.5MHz Constant Switching Frequency

• 600mA Output Current at V,_N = 3V

• Integrated Main Switch and Synchronous Rectifier

• No Schottky Diode Required

• 2.5V to 5.5V Input Voltage Range

• Output Voltage as Low as 0.6V

• 100% Duty Cycle in Low Dropout Operation

• Low Quiescent Current: 300uA

• Slope Compensated Current Mode Control for Excellent Line and Load Transient Response

• Short Circuit Protection

• Thermal Fault Protection, <1uA Shutdown Current

• Space Saving 5-Pin Thin SOT23 package

• Cellular and Smart Phones

• Microprocessors and DSP Core Supplies

• Wireless and DSL Modems

• PDAs

• MP3 Players

• Digital Still and Video Cameras

• Portable Instruments

The EP3001 is a 1.5MHz, constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The EP3001 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The EP3001 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications. The EP3001is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version and fixed output voltage of 1.2V, 1.5V and 1.8V.

Efficiency vs Output Current

100.00% 90.00% 80.00% 70.00% 60.00% 50.00% 40.00% 30.00% 20.00%

10.00% 0.00%

L1

₃ 2.2uH

Vout -Ol.2V

C1

10uF

SW

Vout

GND

^vin Q_

Vin

C1 4.7uF

ME.

5

2

10 100

Output Current (mA)

0.1

1