Datasheet

NCL30100
http://onsemi.com
2
IC1
Figure 1. Typical Application Example of the LED Converter
C1
R3
CS
GND
CT
DRV
VCC
IVC
R4
C2
C3
R2R1
Q1
D1
L1
LED1
D2
LED2
LEDX
6.5 – 24 V
NCL30100
+
−
PIN FUNCTION DESCRIPTION
Pin N5 Pin Name Function Pin Description
1 CS Current sense input A resistor divider consisting of R3 and R4 is used to set the peak current
sensed through the MOSFET switch
2 GND Ground Power ground.
3 C
T
Timing capacitor Capacitor to establish the off time duration
4 IVC Input voltage compensation The current injected into the input varies the switch off time and I
PK
allowing for
feedforward compensation.
5 V
CC
Input supply Supply input for the controller. The input is rated to 18 V but as illustrated
Figure 1, a simple zener diode and resistor can allow the LED string to be
powered from a higher voltage
6 DRV Driver output Output drive for an external power MOSFET