FL103

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Document overview

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• PDF pages: 14

Technical content

Features

 Low Standby Power: < 30mW  High-Voltage Startup  Few External Component Counts  Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry  Green-Mode: Linearly-Decreasing PWM Frequency  Fixed PWM Frequency at 50kHz and 33kHz with Frequency Hopping to Solve EMI Problems  Peak-Current-Mode Control in CV Mode  Cycle-by-Cycle Current Limiting  VDD Over-Voltage Protection (OVP)  VDD Under-Voltage Lockout (UVLO)  Adjustable Brownout Detector  Gate Output Maximum Voltage Clamped at 15V  Thermal Shutdown (TSD) Protection  Available in the 8-Lead SOIC Package  Application Voltage Range: 80VAC ~ 308VAC

Applications

 LED Illumination  Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power tools

Description

This third-generation Primary-Side-Regulation (PSR) and highly integrated PWM contro ller provides features to enhance the performance of LED illumination. The proprietary topology, TRUECURRENT™, enables precise CC regulation and simplified circuit for LED illumination applications. The result is lower-cost and smaller LED lighting compared to a conventional design or a linear transformer. To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting the power conservation requirements. By using the FL103, LED illumination can be implemented with few external components and minimized cost. Figure 1. 8-Lead SOIC

Ordering Information

Temperature Range Top Mark Package Packing Method FL103M -40°C to +125°C FL103 8-Lead, Small -Outline Package (SOIC-8) Tape & Reel

Figure 2. Typical Application

2 GATE

Figure 3. Internal Block Diagram

Figure 4. Top Mark Figure 5. Pin Configuration MOSFET. It is internally clamped below 15V.

3 V DD

on voltage of auxiliary winding.

6 GND Ground

7 NC No Connect

connected to an external startup resistor of typically 100kΩ.

© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FL103 • Rev. 1.0.1 4 FL103 — Primary-Side-Regulation PWM Controller for LED Illumination Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may dam age the device. The device may not function or be operable above the recommended operating conditions and stressi ng the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VHV HV Pin Input Voltage 500 V VVDD DC Supply Voltage (1) 30 V VVS VS Pin Input Voltage -0.3 7.0 V VCS CS Pin Input Voltage -0.3 7.0 V PD Power Dissipation (TA<50°C) 660 mW θJA Thermal Resistance, (Junction-to-Air) +150 °C/W θJC Thermal Resistance, (Junction-to-Case) 39 °C/W TJ Junction Temperature -40 +150 °C TSTG Storage Temperature Range -55 +150 °C TL Lead Temperature (Wave Soldering or IR, 10 Seconds) +260 °C ESD(2) Electrostatic Discharge Capability Human Body Model (Except HV Pin), JEDEC-JESD22_A114 4.50 kV Charged Device Model (Except HV Pin), JEDEC-ESD22_C101 1.25 Note: 1. All voltage values, except differential vo ltages, are given with respect to GND pin. 2. All Pins: HBM =1500V, CDM =750V. Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ens ure optimal performance to the datasheet specificatio ns. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Typ. Max. Unit VDD Continuous Operating Voltage 25 V TA Operation Ambient Tem perature -40 +125 °C

© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FL103 • Rev. 1.0.1 5 FL103 — Primary-Side-Regulation PWM Controller for LED Illumination

Electrical Characteristics

Unless otherwise specified, VDD=15V and TA=25°C. Symbol Parameter Conditions Min. Typ. Max. Units VDD Section VDD-ON Turn-On Threshold Voltage 15 16 17 V VDD-OFF Turn-Off Threshold Vo ltage 7.0 7.5 8.0 V IDD-OP Operating Current 3.2 5.0 mA IDD-GREEN Green Mode Operating Supply Current 0.95 1.20 mA VDD-OVP V DD Over-Voltage Protection Level 27 28 29 V tD-VDDOVP V DD OVP Debounce Time 90 200 350 µs High Voltage (HV) Section VHV-MIN Minimum Startup Voltage on HV Pin 50 V IHV Supply Current Drawn from Pin HV V DL=100V 1.5 2.0 5.0 mA IHV-LC Leakage Current after Startup HV=500V, VDD=VDD-OFF +1V 0.5 3.0 µA Oscillator Section fOSC Normal Frequency Center Frequency > VO * 0.5 47 50 53 kHz Frequency Hopping Range ±1.5 ±2.0 ±2.5 Protection Frequency(3) Center Frequency < VO * 0.5 Frequency Hopping Range ±1.3 VF-JUM-53 Frequency Jumping Point 50kHz  33kHz, VS 1.05 1.25 1.55 V VF-JUM-35 33kHz  50kHz, VS 1.28 1.50 1.75 V fOSC-N-MIN Minimum Frequency at No-Load 300 450 600 Hz fOSC-CM-MIN Minimum Frequency at CCM 7 12 17 kHz fDV Frequency Variation vs. V DD Deviation VDD=10~25V 1 2 % fDT Frequency Variation vs. Temperature Deviation TA=-40°C to +105°C 15 % Voltage Sense (VS) Section VR Reference Voltage for Error AMPs 2.475 2.500 2.525 V VN Green-Mode Starting Voltage on EAV f OSC=2kHz 2.5 V VG Green-Mode Ending Voltage on EAV (3) f OSC=1kHz 0.5 V VBIAS-COMV Adaptive Bias Voltage Dominated by VCOMV RVS=20kΩ 1.4 V Itc IC Bias Current 7.3 10.0 12.7 µA IVS-BO Brownout Detection Current (3) 175 µA IVS-MIN Minimum VS Current (3) 90V AC, Heavy Load 227 µA IVS-MAX Maximum VS Current (3) 264V AC, No Load 721 µA tDIS_MIN Minimum Discharging Time Normal Operation(3) f OSC=50kHz 0.65 µs Protection Area f OSC=33kHz 2.0 2.6 4.0 Continued on the following page…

© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FL103 • Rev. 1.0.1 6 FL103 — Primary-Side-Regulation PWM Controller for LED Illumination Electrical Characteristics (Continued) Unless otherwise specified, VDD=15V and TA=25°C. Symbol Parameter Conditions Min. Typ. Max. Units Current Sense (CS) Section tPD Propagation Delay to GATE Output 90 200 ns tMIN-N Minimum On Time at No-Load V COMR=1V 800 975 1150 ns VTH Threshold Voltage for Current Limit 0.75 0.80 0.85 V VTL Threshold Voltage on VS Pin Smaller than 0.5V 0.25 V GATE Section DCYMAX Maximum Duty Cycle 60 75 85 % VOL Output Voltage Low VDD=20V, Gate Sinks 10mA 1.5 V VOH Output Voltage High VDD=8V, Gate Sources 1mA 5 V tr Rising Time C L=1nF 200 250 ns tf Falling Time C L=1nF 60 100 ns VCLAMP Output Clamp Voltage V DD=25V 15 18 V Thermal Shutdown (TSD) Section TSD Thermal Shutdown Temperature (3) +140 °C TSDHYS Thermal Shutdown Hysteresis (3) - +15 °C Note: 3. These parameters, although guaranteed , are not 100% tested in production.

Figure 18. VF-JUM vs. Temperature Figure 19. VF-JUM-HYS vs. Temperature

Figure 25. 8-Lead, Small Outline Package (SOIC-8) warranty therein, which covers Fairchild products. B) ALL DIMENSIONS ARE IN MILLIMETERS. D) LANDPATTERN STANDARD: SOIC127P600X175-8M.

1.75 MAX

© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FL103 • Rev. 1.0.1 14 FL103 — Primary-Side-Regulation PWM Controller for LED Illumination