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PDF LC101N Data sheet ( Hoja de datos )
| Número de pieza | LC101N | |
| Descripción | LED Current balancer IC | |
| Fabricantes | Sanken | |
| Logotipo |  |
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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
1 page  
LC101N
6. Block Diagram
IN
1
LED
4
LO
8
FB
5
7. Pin Configuration Definitions
IN 1
NC 2
NC 3
LED 4
8 LO
7 NC
6 NC
5 FB
Pin
1
2
3
4
5
6
7
8
Name
IN
NC
NC
LED
FB
NC
NC
LO
Descriptions
Constant current source input
Not connected
Not connected
Output pin to LED
LED current detection signal input (positive side)
Not connected
Not connected
LED current detection signal input (negative side)
LC101N-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
Nov.19, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2015
5
5 Page 
LC101N
12.2.3 Land Pattern Example
0.375
0.15
1.50
2.30
0.50
3.00
0.60
0.65 0.30
Figure 12-3 Land pattern example
(not to scale)
13. (1T)入yp出i力ca電l P圧e差rformance Curves
Doropout Voltage
0.3
TA = 25 °C
0.25
0.2
0.15
0.1
0.05
0
0 50 100 150
LEIDLEDCu(rmreAn)t mA
(2)過F電ig流ur保e 護13-1 Saturation voltage characteristic
Over current protection
4.5
4
3.5
3
2.5
2
1.5 VIN=4V
1 VIN=6V
0.5
0
0 0.1 0.2 0.3 0.4
LED Current A
ILED (mA)
Figure 13-2 Overcurrent characteristic
(3)Lo端子電流 ＊VLED=3.8v Setting
Lo Terminal Current
6
VLED = 3.8 V
5
ILED=150mA
4
3 ILED=100mA
2
1 ILED=100mA
0
0 2 4 6 8 10
Input Voltage V
Input Voltage VIN
(V)
(4T)過her熱ma保l p護rot特Feicg性tiuorne 13-3 LO Pin Current
12
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
VIN = 4.5 V
50 100
JuJnucntciotinotnemTepmerpaeturaret,uTrej (°C℃)
150
Figure 13-4 Thermal shutdown characteristic
LC101N-DSE Rev.1.0
SANKEN ELECTRIC CO.,LTD
Nov.19, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2015
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LC101N.PDF ] | |
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