XC9119 Datasheet | Torex Semiconductor

DESCRIPTION The XC9119 series is 1MHz, PWM controlled step-up DC/DC converter, designed to allow the use of ceramic capacitors. With a built-in 2.0 switching transistor, the XC9119 series can easily provide a step-up operation by using only a coil, a diode, a capacitor, and a resistor, connected externally. Since output voltage up to 19.5V (Maximum Lx operating voltage: 20V) can be derived with reference voltage supply of 1.0V (±2.0%) and external ponents, the series can easily supply high voltage for various general-purpose power supplies, LCD panels and organic EL displays. With a high switching frequency of 1.0MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. With the current limit function (400m A (TYP.): VDD=3.6V), a peak current, which flows through built-in driver transistors can be limited. Soft-start time can be adjusted by external resistors and capacitors. The stand-by function enables the output to be turned off (CE ’L’), that is, the supply current will be less than 1.0μA. - APPLICATIONS - Organic electroluminescence display (OELD) - Power supplies for LCDs - Multi-function power supplies - FEATURES Operating Voltage Range : 2.5V ~ 6.0V Output Voltage Range : Up to 19.5V externally set-up Oscillation Frequency : Reference voltage 1.0V +2.0% : 1.0MHz±20% ON Resistance : 2.0 (VDD=3.6V, VDS=0.4V) Efficiency : 86% (VOUT=15V, VDD=3.6V, IOUT=10m A) Control : PWM control Stand-by function : ISTB=1.0μA (MAX.) Load Capacitor : Low ESR ceramic capacitor Ultra Small Packages : SOT-25, USP-6C Lx Limit Current : 400m A (VDD=3.6V) - TYPICAL APPLICATION CIRCUIT L:22u H CDRH4D18C XBS104S14R 220kohm CIN 4.7u F 0.1u F Lx RFB1 510kohm CE/SS...