LD5805

06/15/2015

5

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD5805-DS-01 June 2015

Ordering Information

Part number

Package

Top Mark

Shipping

TSSOP-EP-16

2500 /tape & reel

SOP-16

2500 /tape & reel

DIP-16

1800 /Tube/ Carton

The LD5805 is ROHS compliant/Green packaged.

Pin Descriptions

SOP/DIP

TSSOP

NAME

FUNCTION

1

5

LED4

LED String 4 Current Input.

2

6

ISET

LED current resistor setting

3

7

OVP

Output voltage and short detection pin.

4

8

RT

Operating frequency resistor setting

5

9

EN

Chip Enable pin, when pull-low is in shutdown mode.

6

10

CS

Power MOSFET Current Sense

7

11

LDR

Gate drive signal for external MOSFET.

8

12

VCC

Internal linear regulator output pin. Bypass with VCC to GND with a

ceramic capacitor of 1

F or greater. VCC is for chip internal use only.

9

13

VIN

Input Power of the chip. Bypass with at least 1

F ceramic capacitor

close to VIN pin.

10

14

LPF

Output dimming mode selection, This pin is connected with

capacitance for Analog dimming output.

11

15

COMP

Soft star Compensation circuit for Boost topology.

12

16

PWM

Input PWM Dimming Signal for brightness control

13

1

LED1

LED String 1 Current Input.

14

2

LED2

LED String 2 Current Input.

15

3

GND

Ground

16

4

LED3

LED String 3 Current.