器件名称:
SM8120
功能描述:
White LED Driver IC
文件大小:
201.93KB 共14页
简 介:
SM8120A White LED Driver IC OVERVIEW The SM8120A is a high efciency step-up DC/DC converter. Due to high voltage CMOS process realizing 24V output supply as maximum value, white LED of 2–4 lights connected in series can be lighted. By connecting in series, current variation among LED is eliminated. Current value sent to white LED can be set by external resistors. In addition, brightness can also be adjusted by control to FB pin or CE pin. FEATURES I I PINOUT (Top view) I I I I I I I I I I I I Boost-up control using PFM White LED of 2-4 lights (connected in series) lighted Output current value can be set by external resistors (51: 9.8mA, 33: 15.2mA, 24: 20.8mA) Brightness adjustable by control to FB pin or CE pin Current variation among LED decreased by high precision High efcient drive by step-up model Supply voltage range: 2.4 to 5.5V Maximum output voltage: 24V Quiescent current: 80A (typ) Standby current: 1.0A (max) RON (Switching MOS-Tr): 2 (typ) Maximum switching frequency: 500kHz (typ) Output current detection accuracy: ± 2% Small package: SOT23-5 VDD 1 5 CE VSS 2 SW 3 4 FB PACKAGE DIMENSIONS (Unit: mm) I I I I I I I I I Cellular phone Pager Digital still camera Handy terminal PDAs Portable games White LED drive LCD bias supply Flash memory supply + 0.2 1.6 0.1 + 0.2 2.8 0.3 1.9 ± 0.2 2.9 ± 0.2 0.4 ± 0.1 + 0.1 0.15 0.05 0.12 M 1.1 ± 0.1 0 ~ 0.10 0.8 ± 0.1 0.95 0.1 ORDERING INFORMATION Device SM8120AH Package SOT23-5 NIPPON PRECISION CIRCU……
