LC101N Datasheet, PDF (1/15 Pages) Sanken electric – LED Current balancer IC

LED Current balancer IC
LC101N
Data Sheet
Description
LC101N is a current control IC that uses a
low-saturated PNP bipolar transistor in the power block.
The saturation voltage of the saturated condition is small
and can be designed with minimal losses in the case of
driving with a constant current source. The constant
current value is set up by the resistor connected between
the FB terminal and the LO pin, and you can drive the
LED in the constant current condition. LC101N is
available in an 8-pin DFN package for surface
mounting.
Features
● Maximum current is 150 mA
● Low input-output voltage difference design is
achieved by low saturation voltage;
V_DIF(max.)＝0.35 V (Io = 150 mA)
● Reference voltage of 200 mV reduces the sense
resistor loss
● Optimal balance operation can be realise in parallel
connection of multiple LED strings
● Protections
Overcurrent Protection (OCP): Foldback
Thermal Shutdown (TSD): Auto-restart
Typical Application
Package
DFN 8
*Not to scale
Electrical Characteristics
● Maximum input voltage: 35 V
● Maximum output current: 150 mA
● Reference voltage for the constant current control:
200 mV
● Power Dissipation: 1.3 W
Applications
● LED Lightings
● Back light system for LCD-Touch-panels,etc.
I_CONST
U1 _IN
1
8
LO
FB ⁵
4
LED
U2
IN
1
8
LO
FB ⁵
4
LED
I_LED1
R1
I_LED2
R2
LC101N-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
1
Nov.19, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2015