SM8120A - Nippon Precision Circuits Inc

SM8120A White LED Driver IC

Number 1 2 3 4 5 Name VDD VSS SW FB CE I/O – – O I Ip1 Power supply GND Coil switching Feed back (Output current detection) Chip enable (High active) Description 1. Input with built-in pull-down resistor NIPPON PRECISION CIRCUITS INC.—2 SM8120A SPECIFICATIONS Absolute Maximum Ratings Parameter Supply voltage range Input voltage range SW output voltage ra.

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 (51Ω: 9.8mA, 33Ω: 15.2mA, 24Ω: 20.8mA) Brightness adjustable by control to FB pin or CE pin Current variation among LED decreased by high precision High efficient drive by step-up model Supply voltage range: 2.4 to 5.5V Maximum output voltage: 24V Quiescent current: 80µA (typ) Standby current: 1.0µA (max) RON (Switching MOS-Tr): 2Ω (typ) Maximum switching frequency: 500kHz (typ) Output current detection accurac.