This product is not recommended for new designs.
LNK403-410/413-420
LinkSwitch-PH LED Driver IC Family
Single-Stage PFC, Primary-Side Constant Current Control
and TRIAC Dimming/Non-Dimming Options
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.
RV
AC
IN D V LinkSwitch-PH
CONTROL
BP
S R FB
Figure 1. Typical Application Schematic.
PI-6543-082211
Output Power Table1,2
Product 5
LNK403/413E/L
LNK404/414E/L
LNK405/415E/L
LNK406/416E/L
LNK407/417E/L
LNK408/418E/L
LNK409/419E/L
LNK410/420E/L
RV = 2 MW
85-132 VAC
Minimum
Output
Power 3
Maximum
Output
Power 4
2.5 W
4.5 W
2.5 W
5.5 W
3.8 W
7.0 W
4.5 W
8.0 W
5.5 W
10 W
6.8 W
13.5 W
8.0 W
20 W
18 W
31 W
RV = 4 MW
85-308 VAC
Minimum
Output
Power 3
Maximum
Output
Power 4
6.5 W
12 W
6.5 W
15 W
8.5 W
18 W
10 W
22 W
12 W
25 W
16 W
35 W
18 W
50 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.
4.
5.
MPMaiancxikmimaugumem: oeouSutIpPtpu-u7ttCppo,owewSeeIrPrw-w7itFiht.hCCBBPP==1100m0Fm. F.
LNK4x3EG CBP = 10 mF.
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.
eSIP-7C (E Package)
Figure 2. Package Options.
eSIP-7F (L Package)
www.power.com
This Product is Covered by Patents and/or Pending Patent Applications.
June 2015
