OCP8122SD datasheet(2/3 Pages) ORIENT-CHIP

2 / 3 page

Dual-Channel high Power LED Controller with DC-DC Converter

For Large LCD or 3D Display Panels

Page2 - 3

Rev. 1.3 Feb .27, 2018

OCP8122A

源于灿瑞磁传天下

SSOP-24L/SOP-24L (Top View)

Figure 1, Pin Assignments of OCP8122A

Name

Pin No.

I/O

Pin Function

SSOP24L

/SOP24L

UVLS

Power Supply Under-Voltage Lock-out Detection pin

VCC

Input Power for controller and internal MOSFET driver

ON/OFF control for the controller

VREG

I/O

Internal Regulation Output Voltage pin

RSET

I/O

Resistor to set operation frequency and master/slave mode

SYNC

I/O

Operation Frequency Synchronization Signal input / output

PWM1

PWM dimming control for channel 1

PWM2

PWM dimming control for channel 2

ADIM

Analog dimming control for the controller

TIMER

I/O

Capacitor Setting shutdown delay time

CMP1

I/O

Connect resistor and capacitor to set soft start and compensation for

channel 1

CMP2

I/O

Connect resistor and capacitor to set soft start and compensation for

channel 2

IFB2

Channel 2 LED Current Sense Input

GATE2

Channel 2 MOSFET driver control

OVP2

Channel 2 Output over-voltage protection sense

CS2

Channel 2 Power MOSFET Switching Current Sense

IFB1

Channel 1 LED Current Sense Input

GATE1

Channel 1 MOSFET driver control

OVP1

Channel 1 Output over-voltage protection sense

CS1

Channel 1 Power MOSFET Switching Current Sense

GND

Ground

SWOUT2

Channel 2 Boost Power MOSFET Drive Output

SWOUT1

Channel 1 Boost Power MOSFET Drive Output

STATUS

Fault Operation Status Output (Open Drain Output)

◼ Pin Configuration

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