LED Lighting IC

LC5205S

SANKEN ELECTRIC CO.,LTD.

1/8

13 October 2011

◆Description

LC5205S is non-isolated type driver IC for LED lighting

which can achieve high efficiency in simple circuitry. Its

compact package which includes output MOSFET and

controller, and low external components are suitable for

small lighting equipment which requires saving space, like

LED light bulb.

Its high voltage capability allows direct connection to

rectified AC supply.

Protection features ensure safety LED drive.

◆Package

Package: SOP8

◆Applications

◆Main Specification

MOSFET

450V (MIN), 6.0Ω (MAX)

Output Current

0.5A (MAX)

Main Supply Voltage

450V (MAX)

◆Features

 SOP8Package

Output MOSFET and controller are included in

one package.

 High voltage supply input

Able to direct connection to rectified AC supply.

 Built-in constant current controller

- PWM mode current control circuitry.

- Adjustable output current by input voltage to Ref pin.

 External PWM

- PWM signal input to PWM pin enables dimming.

- Low signal shuts off output current.

 Under voltage lockout protection (UVLO)

Prevents malfunction when supply voltage is low.

 Over current protection (OCP)

Latched in response to the load short condition.

 Thermal Shutdown protection (TSD)

Protects IC from damage due to excess temperature,

auto-restart when temperature drops below threshold

Typical application circuit

LC5205

VBB

OUT

Sen

GND

Reg

PWM

Ref

LED

Di

L

Line

Filter

Input

FUSE

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