DESCRIPTION
The EUP2573 is a compact, high efficiency, fixed
frequency pulse-width-modulation (PWM) controller.
It provides an easy-to-use power supply solution for
the application from one Li-ion battery to 5V output.
All compensation and protection circuitry are
integrated to minimize external components. The
1.2MHz high switching frequency allows smaller
inductor and output capacitor, making the EUP2573
ideally suited for small battery-powered applications
and saves PCB space.
The EUP2573 contains thermal shutdown function and
output short protection circuit. Built-in soft-start
circuitry prevents excessive inrush current during
start-up.
The EUP2573 is available in a Pb-free, thin-SOT23-5
and SOT23-6 packages.
Typical Application Circuit
FEATURES

VDD Range: 2.7V to 5.5V

High Efficiency up to 90%

1.2MHz Fixed Switching Frequency

Tiny External Components

Output Short Protection

<1μA Shutdown Current

3.3V to +5.0V Distributed Power Supply

Single Cell Li-ion Battery to 5V Converter

Available in SOT23-5 and SOT23-6 Packages

RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS

One Li-Ion Battery to 5V Output

Handheld Devices

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