LD6801

07/28/2015

9

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD6801-DS-00 July 2016

Fig. 11

VIN Zener Clamp and RIN Selection

The LD6801 support wide range LED

light bar

application that integrated Zener diode which is about

we can be calculated as below:

And

Internal Thermal protection

Thermal protection limits total power dissipation in this

device. When the junction temperature reaches 130

C

approximately, The LD6801 would be turn off the

MOSFET

until the IC’s junction temperature cools down

approximately 30°C.

PCB Design Guideline

1.

2.

LD6801 should be placed near to the external

MOSFET

3.

To consider temperature requirement, we need

add PCB pad or heat sink be to fit system spec.

4.

The area of LED current loop should be as small

as possible

Over

Voltage

40uA

OVP

4V