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AL1771 Datasheet(PDF) 7 Page - Diodes Incorporated |
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AL1771 Datasheet(HTML) 7 Page - Diodes Incorporated |
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7 / 24 page  AL1771/1772 Document number: DS41314 Rev. 1 - 2 7 of 24 www.diodes.com August 2018 © Diodes Incorporated AL1771/1772 Electrical Characteristics (@TA = +25°C, VAVCC, VDVCC = 12V, unless otherwise specified.) Symbol Parameter Test Conditions Min Typ Max Unit PFC Section VAVCC_ST AVCC Startup Threshold Voltage VAVCC Rising — 19 — V VAVCC_OPR_MIN AVCC Minimal Operating Voltage VAVCC Falling (After Startup ) 7.0 — 8.5 V VAVCC_OVP AVCC OVP Voltage — — 30 — V IAVCC_ST AVCC Startup Current VCC = VST-0.5V, Before Start-up — 3 — µA IAVCC_OPR AVCC Operating Current Static - No Switching (VCS = 0.6V) — 500 — µA IAVCC_OVP AVCC Shunt Current in OVP mode VCC = 15V after VCC >VCC_OVP Triggered — 2.5 — mA VGD_H GD High Level VAVCC = 18V 12 13.5 15 V VGD_L GD Low Level IGD_SINK = 20mA, VAVCC = 12V — — 1 V tGD_R GD Voltage Rise Time CL = 1nF — 100 — ns tGD_F GD Voltage Fall Time CL = 1nF — 50 — ns tGD_ON_MIN GD Minimum On Time — — 0.7 — µs tGD_ON_MAX GD Maximum On Time — — 17 — µs tGD_OFF_MIN GD Minimum Off Time — — 1.2 — µs tGD_OFF_MAX GD Maximum Off Time — — 40 — µs fGD_MAX GD Maximum Frequency — — 120 — kHz VCS_OCP Primary Current OCP — — 0.5 — V GMCOMP COMP Transconductance — — 100 — µA/V IMAX_COMP_SOURCE COMP Maximum Source Current VFB = 0.8V — 16 — µA IMAX_COMP_SINK COMP Maximum Sink Current VFB = 1.5V — 16 — µA VFB_CV FB CV Threshold Voltage — 1.15 1.2 1.25 V VFB_OVP FB OVP Threshold Voltage — — 1.35 — V LED Driver Section VDVCC_UVLO DVCC UVLO Voltage VDVCC Rising — 6 — V VDVCC_UVHYS DVCC UVLO Hysteresis VDVCC Falling — 300 — mV VDVCC_OVP DVCC OVP Voltage VDVCC Rising when IDVCC > 5mA — 33 — V IMAX_DVCC_OVP Maximum DVCC OVP Current VDVCC > VDVCC_OVP — 7 — mA IDVCC_Low_Power DVCC Supply Current at Low- Power Mode Low-Power Mode, PWMx are “L” — 300 — µA IDVCC_Q DVCC Quiescent Supply Current Enabled , LEDx floating, PWMx are “H”, RSETx is 12k Ω — 1.5 — mA VIL(PWMx) PWM Low Voltage — — — 0.4 V VIH(PWMx) PWM High Voltage — 1.4 — — V fPWMx PWM Frequency — 0.5 — 40 kHz I(PWMx-PD) PWM Internal Pulldown VPWMx = 5V 0.35 — 3.5 μA tPWMx_MIN. ON Minimum PWMx On Time — — 2.5 — μs tPWMx_Low_Power Low-Power Time — — 4 — ms VREFx Reference Voltage — 1.47 1.5 1.53 V IREFx Reference Current RSETx = 12k Ω — 125 — µA ILED1_NOM Regulation Current for Channel 1 (AL1771) RSETx = 12k Ω — 500 — mA Regulation Current for Channel 1 (AL1772) RSETx = 12k Ω — 250 — mA ILED2_NOM Regulation Current for Channel 2 RSETx = 12k Ω — 250 — mA VLEDx_REG Minimum LED Regulation Voltage ILEDx = 250mA — 250 — mV ILEDx_LEAK LEDx Leakage Current VPWMx = 0V, VLEDx = 12V — 0.1 2 μA ILEDx_ACCURACY LEDx Current Accuracy RSETx = 12k Ω -4.0 — 4.0 % VLEDxSHP LED Short Protection Threshold — — 9 — V tLEDxSHDG Short-detection Deglitch 100% duty-cycle — 4 — ms |
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