LD8115

03/10/2017

1

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD8115-DS-00 March 2017

Secondary-side Dimmable Constant Current

and Voltage Controller

REV: 00

General Description

The LD8115 is an isolation secondary LED constant

current and constant voltage controller, and provide the

secondary-side direct dimming interface by DC level and

PWM duty single for smart LED lighting application.

The device features include wide input voltage range from

3.6V to 38V, high-accuracy LED operation current and

output constant voltage.

The LD8115 is the SOP-8 package to minimize the PCB

size as well as component counts.

Features



Secondary-Side

Constant Current

and

Voltage

Feedback



High Accuracy 200mV of LED Current Threshold

Control



Precision 1.25V Voltage Reference



Low operation current ( < 0.5mA)



Wide VCC Operation Range 3.6~38V



Precision Secondary-side LED current Dimming with

Analog and PWM

-

Analog Dimming : 0.1V~2.5V

-

PWM: 100Hz~30kHz

Applications

Typical Application

ADIM

GND

LD8115

REF

OUT

VSEN

VCC

DCDIM

ISEN

PWM Duty

500Hz ~30KHz

ADIM

GND

LD8115

REF

OUT

VSEN

VCC

DCDIM

ISEN

DC Level

0.1V~2.5V

Fig. 1 Application circuit-PWM Dimming

Fig. 2 Application circuit- Analog Dimming