ZLED7031 datasheet(1/20 Pages) IDT

Part #	ZLED7031

Description	Isolated and Non-isolated Flyback LED Driver with Active PFC

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Manufacturer	IDT [Integrated Device Technology]

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Isolated and Non-isolated Flyback

LED Driver with Active PFC

ZSLS7031

Datasheet

1

January 26, 2016

Brief Description

The ZSLS7031 is a primary-side controlled, peak-

current-mode high-brightness LED flyback driver

that supports both isolated and non-isolated

designs with active power factor correction (PFC).

The device works at a constant frequency in

discontinuous conduction mode to provide con-

stant power to the output. It eliminates the need for

an opto-coupler, TL431 shunt regulator, or any

other type of secondary-side feedback device. It

operates from a wide input voltage range of

85VAC to 265VAC.

The ZSLS7031 integrates over-current and over-

voltage protection, as well as a thermal shutdown

to halt the switching action in the event of abnor-

mally high operating temperatures.

Benefits

• High efficiency

• Minimum bill of materials

• Small form-factor package

• No loop compensation required

• Isolated and non-isolated applications

Features

• Power factor PF > 0.95 depending on

application

• Wide application input voltage range: 85V to

265VAC

• Internal over-temperature protection

• Output over-voltage protection (OVP)

• Output over-current protection (OCP) on

primary side

Available Support

• Evaluation Kit

Physical Characteristics

• Operating temperature:-45°C to 105°C

• Maximum junction temperature: 150°C

• Package: MSOP-8, RoHS-compliant

ZSLS7031 Typical Isolated Application

Q1

IC1

ZSLS7031

VSINE

1

FSET

3

GND

4

GATE

7

CS

6

FB

5

n.c.

2

VCC

8

D3

TR

LED+

LED1 to LEDn

LED-

D4

C6

R8

C1

R1

R2

C2

Rset

R3

C4

Rcs

R9

C3

R5

C5

R6

R7

D2

D1

DB1 to DB4

L

85VAC to 265VAC

N

Fuse

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