GM19371 데이터 시트보기 (PDF) - Gamma Microelectronics Inc.

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GM19371

BOOST WHITE LED DRIVER WITH OVP

Gamma Microelectronics Inc. 

GM19371

BOOST WHITE LED DRIVER

WITH OVP

Marking Information and Pin Configurations (Top View)

SOT26

VIN OVP CTRL

6 54

70YWW

1 23

SW GND FB

70: Device Code, Green Product

Y: Year

WW: Week code

Pin Descriptions

Pin Number

Pin Name

1

SW

2

GND

3

FB

4

CTRL

5

OVP

6

VIN

Pin Function

This is the collector of the internal NPN power switch.

Connect to inductor and diode. Minimize the metal trace area

connected to this pin to reduce EMI.

Ground

Reference voltage is 95mV. Connect LEDs and a resistor at this pin.

LED current is determined by the resistance and CTRL voltage. RSET

resistor value is calculated as RSET = 95mV/ILED

This Pin could be used as either shut down or dimming functions:

When VCTRL > 1.8V, generates full scale LED current

VCTRL < 0.4V, chip is OFF

0.4V ≤ VCTRL ≤ 1.8V, PWM duty cycle controls the LED current

Over Voltage Protection, 30V

The input supply pin, bypass this pin with a capacitor as close to the

device as possible

Ordering Information – Green Products

Ordering Number

GM19371-ST26RG

Package

SOT-26

Shipping

3,000 Units/Tape and Reel

2

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