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1694M-G1

OFFLINE, HIGH PF, HIGH EFFICIENCY DIMMABLE LED DRIVER CONTROLLER

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

AP1694

OFFLINE, HIGH PF, HIGH EFFICIENCY DIMMABLE LED DRIVER CONTROLLER

Description

The AP1694 is a high performance AC/DC power factor corrector for

mains dimmable LED driver applications. The device uses Pulse

Frequency Modulation (PFM) technology to regulate output current

while achieving high power factor and low THD. It operates as a BCM

(Boundary Conduction Mode) controller which is good for EMI.

The AP1694 provides accurate constant current (CC) regulation while

removing the opto-coupler and secondary control circuitry. It also

eliminates the need of loop compensation circuitry while maintaining

stability. It can meet the requirement of IEC6100-3-2 harmonic

standard.

The AP1694 features low start-up current, low operation current. It

adopts dynamic base driver control technology and valley on

switching mode to achieve high efficiency. It also has rich protection

features including over voltage, short circuit, over temperature

protection.

The AP1694 provides the dimmable LED driver with a wide dimmer

compatibility including leading edge and trailing edge dimmer. The

AP1694 can achieve deep dimming down to 1%, while the dimming

curve is compliant with the standard of NEMA SSL6.

The AP1694 is available in SO-8 package.

Pin Assignments

Features

• Primary Side Control for Output Current Regulation without Opto-

coupler

• Boundary Conduction Mode (BCM) Operation to Achieve High-

efficiency

• High PF and Low THD

• High Efficiency without Dimmer

• Wide Range of Dimmer Compatibility

• Dimming Curve Compliant with NEMA SSL6

• Low Start-up Current

• Tight LED Current

• Tight LED Open Voltage

• BJT Transistor Driver

• Dynamic Base Driver Control

• Valley-mode Switching to Minimize the Transition Loss

• Easy EMI

• Internal Protections:

ƒ Under Voltage Lock Out (UVLO)

ƒ Leading-edge Blanking (LEB)

ƒ Output Short Protection

ƒ Output Open Protection

ƒ Over Temperature Protection

• Flexible for Design with Small Form Factor and Very Low BOM

Cost

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

(Top View)

NC 1

RI 2

SGND 3

CS 4

8 VCC

7 OUT

6 GND

5 FB

Applications

• Mains Dimmable LED Lighting

(SO-8/ M Package)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

AP1694

Document number: DS36522 Rev. 2 - 2

1 of 9

www.diodes.com

December 2013

© Diodes Incorporated

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