Copyright

 Cirrus Logic, Inc. 2013

(All Rights Reserved)

Cirrus Logic, Inc.

http://www.cirrus.com

Preliminary Product Information

This document contains information for a product under development.

Cirrus Logic reserves the right to modify this product without notice.

CS1610A/11A

CS1612A/13A

TRIAC Dimmable LED Driver IC

• Best-in-class Dimmer Compatibility

-

Leading-edge (TRIAC) Dimmers

-

Trailing-edge Dimmers

-

Center-cut Dimmers

-

Digital Dimmers (with Integrated Power Supply)

• Up to 90% Efficiency

• Optimized for

25W Input Power

• Flicker-free Dimming

• 0% Minimum Dimming Level

• Quasi-resonant Second Stage with Constant-current Output

-

Flyback and Buck

• Fast Startup

• Tight LED Current Regulation: Better than ±5%

• Primary-side Regulation (PSR)

• >0.9 Power Factor

• IEC-61000-3-2 Compliant

• NEMA SSL6 Compatible

•Soft Start

• Protections:

-

Output Open/Short

-

Current-sense Resistor Open/Short

-

External Overtemperature Using NTC

Overview

The CS1610A/1A/12A/13A is a digital control IC engineered to

deliver a high-efficiency, cost-effective, flicker-free, phase-

dimmable, solid-state lighting (SSL) solution for the incandescent

lamp-replacement market. The CS1610A/11A is designed to

control a quasi-resonant flyback topology. The CS1612A/13A is

designed to control a buck topology. The CS1610A/12A and

CS1611A/13A are designed for 120VAC and 230VAC line

voltage applications, respectively.

The CS1610A/11A/12A/13A integrates a critical conduction

mode (CRM) boost converter that provides power factor

correction and dimmer compatibility with a constant output

current, quasi-resonant second stage. An adaptive dimmer

compatibility algorithm controls the boost stage and dimmer

compatibility operation mode to enable flicker-free operation to

<2% output current with leading-edge, trailing-edge, center-cut,

and digital dimmers (dimmers with an integrated power supply).

Applications

• Dimmable Retrofit LED Lamps

• Dimmable LED Luminaries

• Offline LED Drivers

• Commercial Lighting

Ordering Information

See page 16

.

T1

D8

C9

LED+

LED-

D7

R12

NTC

Z2

C8

R11

D6

R8

R13

Q4

CS1610A/11A

IAC

SOURCE

FBGAIN

FBAUX

BSTOUT

GND

SGND

13

16

5

4

IPK

CLAMP

GD

FBSENSE

eOTP

15

8

9

10

12

11

1

14

2

BSTAUX

VDD

R10

3

R9

BR1

BR1

AC

Mains

C7

L1

D2

BR1

BR1

D5

L2

C2

R4

R6

R7

Q2

Z1

C4

C3

R2

D1

R1

C1

R5

C6

D4

D3

C5

Q1

R3

V

BS T

Q3

AUG’13

DS976PP4