EUP2573 Datasheet, PDF (1/2 Pages) Eutech Microelectronics Inc – 1.2MHz Step-Up PWM Controller

EUP2573
1.2MHz Step-Up PWM Controller
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
package.
FEATURES
V_DD 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 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
One Li-Ion Battery to 5V Output
Handheld Devices
Typical Application Circuit
DS2573 Ver0.2 Mar. 2012
Figure 1. Connecting VDD to V_IN
1