ncl30160 ON Semiconductor, ncl30160 Datasheet - Page 5

• Manufacturer Part Number: ncl30160
• Description: Constant Current Buck Regulator For Driving High Power Leds
• Manufacturer: ON Semiconductor

VCC
ROT
(6.3 V to 40 V
5 V Regulator
VIN
GND
VIN
Timer (t
Shutdown
PWM
Thermal
Figure 3. Typical Application Circuit To Drive One LED (Buck)
&
TYPICAL APPLICATION CIRCUITS AND WAVEFORMS
max
CIN
off
)
)
Enable Pull−Up
Figure 2. Simplified Block Diagram
(T
J
Resistor
= 25°C, Unless Otherwise Specified)
R
C
R
S
OT
http://onsemi.com
VCC
V
CC
Q
Q
VIN
DIM/Enable
ROT
VCC
LED
DIM / Enable
5
NCL30160
Short Circuit Protection
D1
Comparator
L1
Valley Current
GND
LX
CS
Comparator
Peak Current
Comparator
Gate Driver
R
SENSE
180 mV
220 mV
500 mV
CS
LX