LinkSwitch-PH LED Driver IC
Description
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...
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