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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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AL8861 bảng dữ liệu(PDF) 4 Page - Diodes Incorporated |
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AL8861 bảng dữ liệu(HTML) 4 Page - Diodes Incorporated |
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4 / 18 page  AL8861 Document number: DS39435 Rev. 3 - 2 4 of 18 www.diodes.com October 2017 © Diodes Incorporated AL8861 Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage 4.5 40 V fSW Switching Frequency — 1 MHz IOUT Continuous Output Current TSOT25 — 1 A SOT89-5 — 1.5 MSOP-8EP — 1.5 TA Operating Ambient Temperature -40 +85 °C TJ Operating Junction Temperature -40 +125 °C — Recommended Analog Dimming Range 5 100 % Electrical Characteristics (@VIN = 16V, TA = +25°C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit SUPPLY VOLTAGE VIN Input Voltage — 4.5 — 40 V IQ Quiescent Current VSET Pin Floating, VIN = 16V — 0.55 — mA ISHDN Shutdown Supply Current VSET Pin Grounded — 55 100 µA VSENSE Mean Current Sense Threshold Voltage Measured on ISENSE Pin with Respect to VIN 96 100 104 mV VSENSE_HYS Sense Threshold Hysteresis — — ±13 — % ISENSE ISENSE Pin Input Current VSENSE = VIN -0.1V — 8 — µA VEN VSET Range on VSET Pin For Analog Dimming 0.3 — 2.5 V VEN(ON) DC Voltage on VSET Pin to Enable VEN Rising — 0.25 — V VEN(OFF) DC Voltage on VSET Pin to Disable VEN Falling — 0.2 — V RLX LX Switch On-Resistance @ILX = 100mA — 0.2 — Ω ILX(LEAK) LX Switch Leakage Current — — — 5 μA tSS Soft-Start Time VIN = 16V, CEN = 1nF — 1.5 — ms fLX Operating Frequency VI = 16V, VO = 9.6V (3 LEDs) L = 47μF, ΔI = 0.25A (ILED = 1A) — 250 — kHz tON_REC Recommended Minimum Switch ON Time For 4% Accuracy — 500 — ns fLX(MAX) Recommended Maximum Switch Frequency — — — 1.0 MHz DLX(MAX) Max Duty Circle — — 98 — % DLX Recommended Duty Cycle Range — 25 — 75 % tPD Internal Comparator Propagation Delay (Note 8) — — 45 — ns TOTP Overtemperature Protection — — +150 — °C TOTP_HYS Temp Protection Hysteresis — — +30 — °C IXL(MAX) Current Limit Peak Inductor Current 2 — — A Note: 8. Guaranteed by design. |
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