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OCP8107
One-Channel High Power LED Controller
General Description
The OCP8107 is a high power LED driver,
non-synchronous boost controller. Ideal for use, the
OCP8107 can powered the LED backlight in LCD
panels. It contains all of the features needed to
implement single ended primary topologies.
The OCP8107 is suitable for topologies which
require a ground source N-channel FET including boost,
SEPIC and various LED driver applications.
The device features include over-voltage protection
(OVP), under-voltage lock-out (UVLO) and Over
Temperature protection (OTP). A soft-start feature is
provided to minimize in-rush current during start-up.
The OCP8107 is available in SOP-8L package, and
it is RoHS compliant. Operating temperature range of
the OCP8107 is from -40°C to 85°C.
Features
Wide Supply Voltage Range: 4.0V ~ 18V
For Boost, SEPIC, LED Driver Applications
Number of LEDs in series limited by external
MOSFETs rating
External enable control
EN PWM Dimming Control
Fixed Operation Frequency
Over-voltage protection
Low in-rush current soft-start function
Under-voltage lock-out
Thermal shutdown
Low Standby current
TA= -40 ~ 85
Available in SOP-8L Package
Applications
LCD White LED Backlighting
LCD TVs
Automotive and Infotainment Displays
Battery Powered Systems
Industrial Control Systems
Pin Configuration
SOP-8L (Top View)
Pin
Name
VCC
EN
CMP
IFB
OVP
NC
GND
SWOUT
Pin No.
SOP-8L
1
2
3
4
5
6
7
8
Figure 1, Pin Assignments of OCP8107
I/O Pin Function
P Input Power for controller and internal MOSFET driver
I ON/OFF control for the controller
I/O Output of the error amplifier
I LED Current Sense Input
I Output over-voltage protection sense
- No connection
P Ground
O Boost Power MOSFET Drive Output
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Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下

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OCP8107
Typical Application Circuit
VIN
L1 33uH
D1
SS2150
VCC(5V~18V)
C4
1uF
EN
+ C1
4.7uF/50V
C5
47nF
R2
NC
U1
1 VCC
SWOUT 8
2 EN
GND 7
3 CMP
NC 6
4 IFB
OVP 5
OCP8107
R4 10
COUT
1uF
Q1
P0420AD
C6
100pF
R6
360K
R7
10K
PWM
D2
R3 820K
R5 50K
IN4148
VOVP=1.55*(1+R6/R7)
EN PWM Dimming Mode
Figure 2A, EN PWM Dimming Typical Application Circuit of OCP8107
VIN
L1 33uH
D1
SS2150
VCC(5V~18V)
EN
PWM
C4
1uF
D2
IN4148
+ C1
4.7uF/50V
C5
R2 100nF
NC
R3
U1
1 VCC
SWOUT 8
2 EN
GND 7
3 CMP
NC 6
4 IFB
OVP 5
OCP8107
R5
R4 10
COUT +
47uF
Q1
P0420AD
C6
100pF
820K 36K VOVP=1.55*(1+R6/R7)
IFB PWM Dimming Mode
R6
360K
R7
10K
Figure 2B, IFB Dimming Typical Application Circuit of OCP8107
LED+
LED1
LEDX
LED-
R10
1
LED+
LED1
LEDX
LED-
R10
1
Ordering Information
Part Number
OCP8107SAD
OCP8107SD
Package Type
SOP-8L
SOP-8L
Package Qty
13-in reel
2500pcs/reel
100pcs/Tube
Temperature
-4085
-4085
Eco Plan
Green
Green
Lead
Cu
Cu
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Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下