Single-stage PFC with Primary-Side CC, TRIAC-dimmable LED Driver IC
Data Sheets
LinkSwitch-PH Data Sheet
LED Driver IC with TRIAC Dimming, Single-Stage PFC and Primary-Side Constant Current Control
Product Details
Description
The LinkSwitch-PH dramatically simplifies implementation of LED drivers requiring PF > 0.9, TRIAC dimming and high efficiency. The highly integrated controller eliminates passive circuitry required for power factor correction, optocoupler and secondary current control circuitry. LinkSwitch-PH introduces a new control technique that provides very high power factor and accurate output current control.
LinkSwitch-PH incorporates a 725 V power MOSFET, a continuous-mode PWM controller, a high voltage switched current source for self biasing, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry, all in a monolithic IC.
Product Highlights
Dramatically Simplifies Off-line LED Drivers
- Single stage power factor correction and accurate constant current (CC) output
- Flicker-free phase-controlled TRIAC dimming
- Eliminates optocoupler and all secondary current control circuitry
- Eliminates all control loop compensation circuitry
- Simple primary-side PWM dimming interface
Accurate and Consistent Performance
- Compensates for transformer inductance tolerances
- Compensates for line input voltage variations
- Frequency jittering greatly reduces EMI filter size and costs
Advanced Protection and Safety Features
- Auto-restart for short circuit protection
- Open circuit fault detection mode
- Automatic thermal shutdown or restart with hysteresis
- Meets high voltage creepage requirement between DRAIN and all other pins both on PCB and at package
EcoSmart® – Energy Efficient
- Low standby power remote ON/OFF feature (< 50 mW at 230 VAC)
- No current sense resistors – maximizes efficiency Green Package
- Halogen free and ROHS compliant package Applications
- Offline LED driver
Applications
Power Table
| Output Power Table1, 2 | ||||
|---|---|---|---|---|
| Product5 | RV = 2 MΩ | RV = 4 MΩ | ||
| 85-132 VAC | 85-308 VAC | |||
| Min. Output Power3 | Max. Output Power4 | Min. Output Power3 | Max. 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 | 10.0 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 |
Notes:
- Continuous power in an open frame with adequate heat sinking at device local ambient of 70 °C.
- Power level calculated on typical LED string voltage with efficiency > 80%.
- Minimum output power with CBP = 10 µF.
- Maximum output power with CBP = 100 µF. LNK4x3EG CBP = 10 µF.
- Package: E: eSIP-7C, L: eSIP-7F.
Product Documents
Design Examples
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