EUP2573 Datasheet | Eutech Microelectronics

1.2MHz Step-Up PWM Controller DESCRIPTION The EUP2573 is a pact, 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 pensation and protection circuitry are integrated to minimize external ponents. 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 VDD Range: 2.7V to 5.5V High Efficiency up to 90% 1.2MHz Fixed Switching Frequency Tiny External ponents 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 Ro HS pliant 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 VIN Typical Application Circuit (Continued) Pin Configurations Package Type Figure 2. Connecting VDD to VOUT Pin Configurations SOT23-5 Pin Description PIN SOT23-5 DESCRIPTION Enable input. EN is an active high asserted input. Set EN lower than 0.4V will disable EUP2573. GND Ground. EXT Output of MOSFET gate driver. Connect this pin to the gate of the external MOSFET. VDD Power input. Connect VDD to the input power supply or to the output of the regulator. FB Feedback pin. DS2573 Ver0.2 Mar. 2012 Ordering Information Order Number EUP2573VIR1 Package Type SOT23-5 Marking xxxxx...