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) R V Eliminates optocoupler and all secondary current control AC circuitry IN LinkSwitch-PH D V Eliminates control loop compensation circuitry CONTROL BP Simple primary-side PWM dimming interface Universal input voltage range S R FB LNK403-410 optimized for flicker-free TRIAC dimming PI-6543-082211 EcoSmart Energy Efficient Single-stage PFC combined with output CC control Figure 1. Typical Application Schematic. Greatly increases efficiency, >90% achievable Reduces component count 1,2 Output Power Table No current sense resistors Low standby power remote ON/OFF feature R = 2 MW R = 4 MW V V (<50 mW at 230 VAC) 85-132 VAC 85-308 VAC 5 Product Minimum Maximum Minimum Maximum Accurate and Consistent Performance Output Output Output Output Compensates for transformer inductance variations 3 4 3 4 Power Power Power Power Compensates for line input voltage variation LNK403/413E/L 2.5 W 4.5 W 6.5 W 12 W Frequency jittering greatly reduces EMI filter size and cost LNK404/414E/L 2.5 W 5.5 W 6.5 W 15 W Advanced Protection and Safety Features LNK405/415E/L 3.8 W 7.0 W 8.5 W 18 W Auto-restart for short-circuit protection LNK406/416E/L 4.5 W 8.0 W 10 W 22 W Open circuit fault detection mode LNK407/417E/L 5.5 W 10 W 12 W 25 W Automatic thermal shutdown restart with hysteresis LNK408/418E/L 6.8 W 13.5 W 16 W 35 W Meets high voltage creepage requirement between DRAIN and all other signal pins both on PCB and at package LNK409/419E/L 8.0 W 20 W 18 W 50 W LNK410/420E/L 18 W 31 W 40 W 78 W Green Package Table 1. Output Power Table. Halogen free and ROHS compliant package Notes: 1. Continuous power in an open frame with adequate heat sinking at device local Applications ambient of 70 C. Off-line LED driver 2. Power level calculated on typical LED string voltage with efficiency >80%. 3. Minimum output power with C = 10 mF. BP 4. Maximum output power with C = 100 mF. LNK4x3EG C = 10 mF. BP BP Description 5. Package: eSIP-7C, eSIP-7F. 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- eSIP-7C (E Package) eSIP-7F (L Package) mode PWM controller, a high-voltage switched current source for self biasing, frequency jittering, protection circuitry including Figure 2. Package Options. cycle-by-cycle current limit and hysteretic thermal shutdown. www.power.com June 2015 This Product is Covered by Patents and/or Pending Patent Applications.LNK403-410/413-420 DRAIN (D) 5.9 V BYPASS (BP) REGULATOR BYPASS SOFT-START CAPACITOR TIMER HYSTERETIC SELECT THERMAL SHUTDOWN FAULT I M PRESENT LIM I 5.9 V AUTO-RESTART 5.0 V COUNTER BYPASS PIN Gate UNDERVOLTAGE 1 V Driver VOLTAGE SenseFet MONITOR (V) STOP JITTER LOGIC CLOCK Comparator OSCILLATOR LEB FB 3-V OFF T DC MAX OCP UV/OV LINE SENSE CURRENT LIMIT I LIM I COMPARATOR V FEEDBACK (FB) PFC/CC CONTROL V V SENSE BG M I I FB FB OFF FEEDBACK SENSE DC MAX I S REFERENCE REFERENCE (R) V BG BLOCK 6.4 V PI-5431-102610 SOURCE (S) Figure 3. Functional Block Diagram. VOLTAGE MONITOR (V) Pin: Pin Functional Description This pin interfaces with an external input line peak detector, DRAIN (D) Pin: consisting of a rectifier, filter capacitor and resistors. The This pin is the power FET drain connection. It also provides applied current is used to control stop logic for line under- internal operating current for both start-up and steady-state voltage (UV), overvoltage (OV), provide feed-forward to control operation. the output current and the remote ON/OFF function. SOURCE (S) Pin: This pin is the power FET source connection. It is also the Exposed Pad (Backside) Internally ground reference for the BYPASS, FEEDBACK, REFERENCE and Connected to VOLTAGE MONITOR pins. SOURCE Pin E Package (eSIP-7C) L Package (eSIP-7F) (Top View) BYPASS (BP) Pin: This is the connection point for an external bypass capacitor for 7 D the internally generated 5.9 V supply. This pin also provides 5 S output power selection through choice of the BYPASS pin 4 BP 3 FB capacitor value. 2 V 1 R FEEDBACK (FB) Pin: 1 3 5 Exposed Pad (backside) Internally R FB S The FEEDBACK pin is used for output voltage feedback. The 2 4 7 Connected to Lead Bend Outward current into the FEEDBACK pin is directly proportional to the V BP D SOURCE Pin (see from Drawing output voltage. The FEEDBACK pin also includes circuitry to eSIP-7C Package (Refer to eSIP-7F Package Drawing) protect against open load and overload output conditions. Outline Drawing) PI-5432-082411 REFERENCE (R) Pin: Figure 4. Pin Configuration. This pin is connected to an external precision resistor and is used to configure for dimming (LNK403-410) and non-TRIAC dimming (LNK413-420) modes of operation. 2 Rev. G 06/15 www.power.com - + + - - +