Datasheet AL8862Q (Diodes) - 4

AL8862Q Electrical Characteristics
(TA = -40°C to +125°C, unless otherwise noted).
Symbol Parameter Conditions Min Typ Max Unit SUPPLY VOLTAGE
VIN Input Voltage — 5.0 — 55 V IQ Quiescent Current CTRL Pin Floating, VIN =16V — 450 — µA VUVLO Under Voltage Lockout VIN Rising — 4.8 — V VUVLO_HYS UVLO Hysteresis — — 200 — mV
HYSTERESTIC CONTROL
Measured on SET Pin with VSET Mean Current Sense Threshold Voltage 96 100 104 mV Respect to VIN VSET_HYS Sense Threshold Hysteresis — — ±13 — % ISET SET Pin Input Current VSET = VIN -0.1 — 8 — µA Internal Resistor between VIN Pin and RSET_INT — — 500 — Ω SET Pin
ENABLE AND DIMMING
VCTRL Voltage Range on CTRL Pin For Analog Dimming 0.4 — 2.5 V — Analog Dimming Range — 10 — 100 % DC Voltage On CTRL Pin For Analog VCTRL_ON V Dimming On CTRL Rising — 0.45 — V DC Voltage On CTRL Pin For Analog VCTRL_OFF V Dimming Off CTRL Falling — 0.40 — V
SWITCHING OPERATION
RON SW Switch On Resistance @ISW = 100mA — 0.4 — Ω ISW_LEAK SW Switch Leakage Current — — — 8 μA tSS Soft Start Time VIN = 16V, CCTRL = 1nF — 1.5 — ms VIN = 16V, VO = 9.6V (3 LEDs) fSW Operating Frequency — 250 — kHz L = 47μH, ΔI = 0.25A (ILED = 1A) Recommended Maximum Switch fSW_MAX — — — 1 MHz Frequency Recommended Minimum Switch ON tON_REC For 4% Accuracy — 500 — ns Time Internal Comparator Propagation Delay tPD — — 100 — ns (Note 7)
THERMAL SHUTDOWN
TOTP Over Temperature Protection — — +150 — °C TOTP_HYS Temp Protection Hysteresis — — +30 — °C ISW_MAX Current Limit Peak Inductor Current — 3 — A Note: 7. Guaranteed by design. AL8862Q 4 of 16 December 2019 Document number: DS42199 Rev. 3 - 2
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