AL8820 for Non-dimmable MR16 LED Driver Solution

AL8820 for non-dimmable MR16 LED Driver What’s HOT The Diodes Advantage Input voltage: Typ AC12V; Output Current accuracy: ±3% ; High Power Factor: >0.9 ; High operation frequency : up to 1Mhz; Integrated NMOS Protection: OTP, UVLO, Soft Start Boost stage Protection: OVP； Buck stage Protection: Short /open load protection High electronic transformer compatibility Device  Min Input Voltage Max Input Voltage VOUT Mos Drive Voltage Current Switch Integrated MOS RDS(ON) Feedback Switching Frequency Package V A mΩ kHz AL8820 5 35 ADJ VCC 3 200 1.22 <1MHZ SO8-EP Improved power dissipation reduces temperature rise  improving reliability over standard solutions Increases reliability of lamps Exceeds requirements for 277VAC main voltages Removes need for start up bleed resistor AL9910: 7.5V VDD:  MOSFETs with VGS(MAX)<12V AL9910A: 10V VDD:  MOSFETs with VGS(MAX)<20V LD Pin  dimming, thermal control, better accuracy. PWM_D is TTL compatible  better resolution

Test Item List Test item Test condition Spec Test Value Input Voltage With ET 208-253Vac Output voltage 10v 10V Output current 650ma 650mA Output Power 6.5W 6.5w Efficiency without ET（12vac） 78% ~71% PF >0.9 Line regulation < 0.94% Load regulation < 2.0% output current ripple <10% output open protection function with ET Ok output open power loss Without ET（12vac） 0-0.1W output short protection ok without et（12vac） 0.7W Case temperature Ta=30°C 77.7C Thermal Shutdown TOTSD 165 Thermal Shutdown Hysteresis THYS 20 EMI 12Vac/60hz EN55022 (30M-1GHZ) PASS

Schematic Notes: C9,C10,Lm3,R4,C4 ,C7 no connected.

BOM – Total 26 Components including AL8820, BOM < $0.7 price quantity cost(RMB) D1,D2,D3,D4 D5,D6 B240 0.12 6 $ 0.120 R1 50K,0603 0.01 1 $ 0.002 R2 3K,0603 R6,R7 0.3ohm,1206 2 $ 0.003 RCS1 0.3ohm ,1206 RCS 0.4ohm,1206 R3 500ohm,0603 R4 NC $ - C1 220uf/35v 0.3 $ 0.050 C2, 2.2uf/50v,1206 0.035 $ 0.006 C3,C7 100nf/50v,0603 C5,C6 1uf/16V,0603 0.03 $ 0.010 C8 10uf/35v,0805 0.04 $ 0.007 C4,C9,C10, L1 2uH/ color ring inductance 0.1 $ 0.017 L2 10uh/2A 0.5 $ 0.083 L3 100uh/1.2A Lm3 Lm4 1206 120ohm@100MHZ F1 Fuse U1 AL8820 　total 26 $0.414 (without PCB and U1 )

Efficiency@230V to 12Vac electrical transformer Efficiency with ET Input Voltage (Vac) Efficiency@230V to 12Vac electrical transformer OSRAM (HTM 70/230-240) Philips (ET-E 105) IBL (4104.00） 208 65.75% 66.69% 69.90% 220 68.51% 67.61% 70.69% 230 69.18% 68.18% 71.03% 240 69.67% 69.01% 72.20% 253 70.30% 69.09% 72.65%

PF@230V to 12Vac electrical transformer PF with ET Input Voltage (Vac) PF@230V to 12Vac electrical transformer OSRAM (HTM 70/230-240) Philip (ET-E 105) IBL (4104.00） 208 0.9726 0.9786 0.9758 220 0.9686 0.9784 0.9731 230 0.9643 0.9828 0.9772 240 0.9593 0.9807 0.9736 253 0.9516 0.9805 0.97

@230V to 12Vac electrical transformer Line Regulation with ET Input Voltage (Vac) Output Current(mA) @230V to 12Vac electrical transformer OSRAM (HTM 70/230-240) Philip (ET-E 105) IBL (4104.00） 208 653.22 653.79 655.21 220 652.54 654 653.9 230 653.39 240 653.58 652.32 653.55 253 653.6 653.06 653.8

Output Current（mA）@230V to 12Vac electrical transformer Load Regulation with ET Output Voltage (V) Output Current（mA）@230V to 12Vac electrical transformer OSRAM (HTM 70/230-240) Philip (ET-E 105) ) IBL (4104.00） 6.7 660.87 660.34 660.43 10 652 653.4 653.54 13.4 645 650.14 647.06

Electronic Transformers Electronic Transformers Transformer Compatibility 220Vac to 12Vac electronic transformer compatibility Electronic Transformers (230VAC to 12VAC) Performance Result Brand Model 1 OSRAM ET-Z 60 (20-60W) Y 2 HTM 70/230-240 (20-70W) 3 Philips ET-E 105 (50-105w) 4 Primaline 70 230-240 (20-70w) 5 SELF (宁波赛尔富) SET105F-2 (35-105W) 6 上海申油 NO model Information (50w) 7 IBL 4104.00 Electronic Transformers (230VAC to 12VAC) Performance Result Brand Model 8 佛山照明 EA-HF50 (20-50w) Y 9 OPPLE DB35-220/12 (20-35w) 10 三雄.极光 (20-60w) 11 阳光 ET-60E （20-60w） Y stand for NO flicker N stand for flicker

Electronic Transformers Transformer Compatibility 120Vac to 12Vac electronic transformer compatibility Electronic Transformers (120VAC to 12VAC) Performance Result (No flicker) Brand Model 1 LIGHTECH LET75 (75W) Y 2 3 LET303 (300W) 4 Hatch RS12-60M (60W) 5 HATCH RS12-150 (150W) 6 RS12-30M-LED (30w) 7 VS12-60W Y stand for NO flicker N stand for flicker

Figure1 Bench circuit with ET

Steady State Waveform with ET With OSRAM (HTM 70/230-240) and 3LEDS in series Vet Iet Vboost Iled Vinac=208Vac Vinac=230Vac Vinac=253Vac With Philips (ET-E 105) and 3LEDS in series Vinac=208Vac Vinac=230Vac Vinac=253Vac

Steady State Waveform with ET With IBL（4104.00） and 3LEDS in series Vet Iet Vboost Iled Vinac=208Vac Vinac=230Vac Vinac=253Vac

Start-up Waveform with ET With OSRAM (HTM 70/230-240) and 3 LEDS in series Vet Iet Vboost Iled Vinac=208Vac @ T=40.61ms Vinac=230Vac Vinac=253Vac With Philips((ET-E 105) ) and 3LEDS in series Vinac=208Vac Vinac=230Vac Vinac=253Vac

Start-up Waveform with ET With IBL（4104.00） and 3LEDS in series Vet Iet Vboost Iled Vinac=208Vac Vinac=230Vac Vinac=253Vac

Steady State Waveform with ET and different load With OSRAM (HTM 70/230-240) Vet Iet Vboost Iled With 2LEDS in series With 3LEDS in series With 4LEDS in series With Philips (ET-E 105) With 2LEDS in series With 3LEDS in series With 4LEDS in series

Steady State Waveform with ET at Different Load With IBL（4104.00） Vet Iet Vboost Iled With 2LEDS in series With 3LEDS in series With 4LEDS in series

Open load to reload waveform Open Load Operation Waveform With OSRAM (HTM 70/230-240) Vet Iet Vboost Iled Short load operation waveform Open load to reload waveform

Short load to reload waveform Short Load Operation Waveform With OSRAM (HTM 70/230-240) Vet Iet Vboost Iled Short load operation waveform Short load to reload waveform

Thermal Test With OSRAM (HTM 70/230-240) and 3LEDS in series Rectifier IC Rectifier IC case temperature =77.7°C； Ambient temperature=28.2°C

EMI Test condition: Input voltage :12Vac/60hz; Output load:3LEDs in series

Summary compatible with most of electronic transformers High PF High Efficiency Good line regulation and load regulation Has output open / short and OTP protection Low output current ripple