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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,.