IL9921 Datasheet, PDF (1/6 Pages) IK Semicon Co., Ltd – HIGH-VOLTAGE LED DRIVER

TECHNICAL DATA
HIGH-VOLTAGE LED DRIVER
WITH BUILD-IN MOSFET SWITCH
IL9921/22/23
FEATURES
▪ Operating temperature range -40 ..+85 ºС
▪ ON-resistance of the MOSFET switch
210 Ohm for ambient temperature 25 ºС
▪ OFF-state breakdown voltage of the
MOSFET switch not less 500 V for
Ambient temperature 25 ºC.
TO-92
SOT-89
1. Drain
2. G^2.ND
3. V_DD
1
2
3
1.Drain
2.GND
3.V_DD
ORDERING INFORMATION
Device
Operating
Temperature Range
IL9921LF, IL9922LF, IL9923LF
IL9921PT, IL9922PT, IL9923PT
ТА = - 40 ... + 85 С
Package
TO-92
SOT-89
Packing
Tape
Tape & Reel
DESCRIPTION
IL9921, IL9922, IL9923 are high-voltage LED driver control ICs with build-in MOSFET switch
and purposed for LED lighting control.
They allow efficient operation of LED strings from voltage sources ranging up to 400VDC.
The IL9921/22 includes an internal high-voltage switching MOSFET controlled with fixed off-time
TOFF of approximately 10µs. The LED string is driven at constant current, thus providing constant
light output and enhanced reliability. The output current is internally fixed at 20mA for IL9921,
50mA for IL9922 and 30mA for IL9923. The peak current control scheme provides good regulation
of the output current throughout the universal AC line voltage range of 85 to 264V AC or DC input
voltage of 20 to 400V.
PIN DESCRIPTION
Pin No
1
2
Symbol
Drain
GND
3
V _DD
Description
This is a drain terminal of the output switching MOSFET and a
linear Regulator input.
This is a common connection for all circuits
This is a power supply pin for all control circuits.
Bypass this pin with a 0.1uF low impedance capacitor.
1
2011, February, Ver. 01