Eutech Microelectronics EUP2573
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. 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.DESCRIPTION
All compensation and protection circuitry are integrated to minimize external components. 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
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 Package RoHS Compliant and 100% Lead (Pb)-Free Halogen-FreeAPPLICATIONS
One Li-Ion Battery to 5V Output Handheld Devices Typical Application Circuit DS2573 Ver0.2 Mar. 2012 Figure 1. Connecting VDD to VIN 1 Typical Application Circuit (Continued) EUP2573 Pin Configurations Package Type Figure 2. Connecting VDD to VOUT Pin Configurations SOT23-5 PinDESCRIPTION
PIN SOT23-5DESCRIPTION
1 EN Enable input. EN is an active high asserted input.