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LC101N Datasheet Preview

LC101N Datasheet

LED Current balancer IC

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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;
VDIF(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.
ICONST
U1
LO 8
IN
1
FB 5
4
LED
U2
LO 8
IN
1
FB 5
4
LED
ILED1
R1
ILED2
R2
LC101N-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
Nov.19, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2015
1




Sanken

LC101N Datasheet Preview

LC101N Datasheet

LED Current balancer IC

No Preview Available !

LC101N
CONTENTS
Description ------------------------------------------------------------------------------------------------------ 1
CONTENTS ---------------------------------------------------------------------------------------------------- 2
1. Absolute Maximum Ratings----------------------------------------------------------------------------- 3
2. Recommended Operating Conditions ----------------------------------------------------------------- 3
3. Electrical Characteristics -------------------------------------------------------------------------------- 3
4. Thermal Resistance --------------------------------------------------------------------------------------- 3
5. Derating Curve -------------------------------------------------------------------------------------------- 4
6. Block Diagram --------------------------------------------------------------------------------------------- 5
7. Pin Configuration Definitions--------------------------------------------------------------------------- 5
8. Typical Application --------------------------------------------------------------------------------------- 6
9. External Dimensions-------------------------------------------------------------------------------------- 7
10. Marking Diagram ----------------------------------------------------------------------------------------- 7
11. Operational Description --------------------------------------------------------------------------------- 8
11.1 Basic operation--------------------------------------------------------------------------------------- 8
11.2 Power Supply----------------------------------------------------------------------------------------- 8
11.3 Current Balance Operation ----------------------------------------------------------------------- 8
11.4 Operable voltage of LC101N ---------------------------------------------------------------------- 9
11.5 Overcurrent Protection (OCP) ------------------------------------------------------------------- 9
11.6 Thermal Shutdown (TSD) ------------------------------------------------------------------------- 9
12. Design Notes ------------------------------------------------------------------------------------------------ 9
12.1 External Components ------------------------------------------------------------------------------ 9
12.1.1 LED current setup resistor, R1 ------------------------------------------------------------- 9
12.2 Pattern Layout ------------------------------------------------------------------------------------- 10
12.2.1 PCB Trace Layout and Component Placement --------------------------------------- 10
12.2.2 Pattern Layout Example ------------------------------------------------------------------- 10
12.2.3 Land Pattern Example --------------------------------------------------------------------- 11
13. Typical Performance Curves-------------------------------------------------------------------------- 11
14. Packing Specifications---------------------------------------------------------------------------------- 12
14.1 Emboss and Carrier Tape Specification ------------------------------------------------------ 12
14.2 Reel Specifications -------------------------------------------------------------------------------- 13
15. Recommended Reflow Temperature Profile ------------------------------------------------------- 14
IMPORTANT NOTES ------------------------------------------------------------------------------------- 15
LC101N-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
Nov.19, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2015
2


Part Number LC101N
Description LED Current balancer IC
Maker Sanken
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