LNK403-410/413-420

LinkSwitch-PH LED Driver IC Family

www.power.com

June 2015

Single-Stage PFC, Primary-Side Constant Current Control

and TRIAC Dimming/Non-Dimming Options

This Product is Covered by Patents and/or Pending Patent Applications.

This product is not recommended for new designs.

Output Power Table1,2

Product5

R

V = 2 MW

R

V = 4 MW

85-132 VAC

85-308 VAC

Minimum

Output

Power3

Maximum

Output

Power4

Minimum

Output

Power3

Maximum

Output

Power4

LNK403/413E/L

2.5 W

4.5 W

6.5 W

12 W

LNK404/414E/L

2.5 W

5.5 W

6.5 W

15 W

LNK405/415E/L

3.8 W

7.0 W

8.5 W

18 W

LNK406/416E/L

4.5 W

8.0 W

10 W

22 W

LNK407/417E/L

5.5 W

10 W

12 W

25 W

LNK408/418E/L

6.8 W

13.5 W

16 W

35 W

LNK409/419E/L

8.0 W

20 W

18 W

50 W

LNK410/420E/L

18 W

31 W

40 W

78 W

Table 1. Output Power Table.

Notes:

1. Continuous power in an open frame with adequate heat sinking at device local

ambient of 70 °C.

2. Power level calculated on typical LED string voltage with efficiency

>80%.

3. Minimum output power with C

BP = 10 mF.

4. Maximum output power with C

BP = 100 mF. LNK4x3EG CBP = 10 mF.

5. Package: eSIP-7C, eSIP-7F.

Product Highlights

Dramatically Simplifies Off-line LED Drivers

•

Single-stage combination of power factor correction and

accurate constant-current (CC) output

•

Enables very long lifetime designs (no electrolytic capacitors)

•

Eliminates optocoupler and all secondary current control

circuitry

•

Eliminates control loop compensation circuitry

•

Simple primary-side PWM dimming interface

•

Universal input voltage range

•

LNK403-410 optimized for flicker-free TRIAC dimming

EcoSmart™ – Energy Efficient

•

Single-stage PFC combined with output CC control

•

Greatly increases efficiency, >90% achievable

•

Reduces component count

•

No current sense resistors

•

Low standby power remote ON/OFF feature

(<50 mW at 230 VAC)

Accurate and Consistent Performance

•

Compensates for transformer inductance variations

•

Compensates for line input voltage variation

•

Frequency jittering greatly reduces EMI filter size and cost

Advanced Protection and Safety Features

•

Auto-restart for short-circuit protection

•

Open circuit fault detection mode

•

Automatic thermal shutdown restart with hysteresis

•

Meets high voltage creepage requirement between DRAIN and

all other signal pins both on PCB and at package

Green Package

•

Halogen free and ROHS compliant package

Applications

•

Off-line LED driver

Description

The LinkSwitch™-PH dramatically simplifies implementation of

LED drivers requiring long lifetime, high efficiency, PF

>0.9, and

TRIAC dimming capability (LNK403-410). The single-stage

combined power factor and constant-current controller eliminates

a switching stage and the electrolytic bulk capacitor. The

advanced primary-side control used by the LinkSwitch-PH device

provides accurate constant current control while eliminating the

need for an optocoupler and current sensing circuits.

LinkSwitch-PH incorporates a 725 V power FET, a continuous-

mode PWM controller, a high-voltage switched current source for

self biasing, frequency jittering, protection circuitry including

cycle-by-cycle current limit and hysteretic thermal shutdown.

Figure 2.

Package Options.

eSIP-7F (L Package)

eSIP-7C (E Package)

Figure 1.

Typical Application Schematic.

PI-6543-082211

LinkSwitch-PH

AC

IN

D

S

BP

V

FB

R

CONTROL

RV