SM8122A Datasheet (NPC) - White LED Driver

SM8122A, White LED Driver

Number Name SOT23-6W 1 2 3 4 5 6 MSON-6 2 6 4 3 5 1 SW VOUT FB CE VSS VDD O I I Ip1 * * Coil switching Output voltage detection Feed back (Output current detection) Chip enable (High active) GND Power supply I/O Description 1.

Input with built-in pull-down resistor NIPPON PRECISION

www.DataSheet4U.com SM8122A White LED Driver IC OVERVIEW The SM8122A is a high efﬁciency step-up DC/DC converter.

Due to high voltage CMOS process realizing 25V output supply as maximum value, 2 to 6 lights of white LED 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.

Since the SM8122A has an over v

SM8122A Features

* I I PINOUT (Top view) I I I I I I I I I I I I I I Boost-up control using PWM 2 to 6 lights of white LED (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 variat