Datasheet AL8860Q (Diodes) - 4
| Fabricante | Diodes |
| Descripción | High Efficiency 40V 1.5A Automotive Grade Buck LED Driver |
| Páginas / Página | 15 / 4 — AL8860Q. Electrical Characteristics. Symbol. Parameter. Condition. Min. … |
| Formato / tamaño de archivo | PDF / 1.0 Mb |
| Idioma del documento | Inglés |
AL8860Q. Electrical Characteristics. Symbol. Parameter. Condition. Min. Typ. Max. Unit. INPUT VOLTAGE. HYSTERESTIC CONTROL. R P. ENABLE
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AL8860Q Q Electrical Characteristics
(TA = -40°C to +125°C, unless otherwise specified.)
Symbol Parameter Condition Min Typ Max Unit INPUT VOLTAGE
VIN Input Voltage — 4.5 — 40 V IQ Quiescent Current CTRL Pin Floating, VIN =16V — 0.55 — mA ISHDN Shutdown Supply Current CTRL Pin Grounded — 50 80 µA
HYSTERESTIC CONTROL
Measured on SET Pin with
T
Respect to VIN Pin 96 100 104 mV
C
Mean Current Sense Threshold (TA = +25°C)
U
VSENSE Voltage Measured on SET Pin with
D
Respect to VIN Pin 95 100 105 mV
O
(TA = -40°C to +125°C)
R P
VSENSE_HYS Sense Threshold Hysteresis — — ±20 — % ISET SET Pin Input Current VSET = VIN-0.1 — 8 — µA
W ENABLE E
Voltage Range on CTRL Pin For Analog Dimming 0.3 — 2.5 V
N
VEN Analog Dimming Range For Analog Dimming 5 — 100 % VEN_ON DC Voltage on CTRL Pin to Enable VEN Rising — 0.25 — V VEN_OFF DC Voltage on CTRL Pin to Disable VEN Falling — 0.2 — V
SWITCHING OPERATION
RON SW Switch On Resistance @ISW = 100mA — 0.2 — Ω ISW_LEAK SW Switch Leakage Current — — — 5 μA tSS Soft Start Time VIN = 16V, CEN = 1nF — 1.5 — ms VIN = 16V, VO = 9.6V (3 LEDs) fSW Operating Frequency — 250 — kHz L = 47μF, I = 0.25A (ILED = 1A) Recommended Minimum Switch ON tON_REC For 4% Accuracy — 500 — ns Time Recommended Maximum Switch fSW_MAX — — — 1.0 MHz Frequency DSW_MAX Maximum Duty Cycle — — 98 — % Internal Comparator Propagation tPD — — 100 — ns Delay (Note 8)
THERMAL SHUTDOWN
TOTP Over Temperature Shutdown — — +150 — °C TOTP_HYS Temperature Protection Hysteresis — — +30 — °C Note: 8. Guaranteed by design. AL8860Q 4 of 15 May 2019 Document number: DS41797 Rev. 2 - 2
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© Diodes Incorporated
(TA = -40°C to +125°C, unless otherwise specified.)
Symbol Parameter Condition Min Typ Max Unit INPUT VOLTAGE
VIN Input Voltage — 4.5 — 40 V IQ Quiescent Current CTRL Pin Floating, VIN =16V — 0.55 — mA ISHDN Shutdown Supply Current CTRL Pin Grounded — 50 80 µA
HYSTERESTIC CONTROL
Measured on SET Pin with
T
Respect to VIN Pin 96 100 104 mV
C
Mean Current Sense Threshold (TA = +25°C)
U
VSENSE Voltage Measured on SET Pin with
D
Respect to VIN Pin 95 100 105 mV
O
(TA = -40°C to +125°C)
R P
VSENSE_HYS Sense Threshold Hysteresis — — ±20 — % ISET SET Pin Input Current VSET = VIN-0.1 — 8 — µA
W ENABLE E
Voltage Range on CTRL Pin For Analog Dimming 0.3 — 2.5 V
N
VEN Analog Dimming Range For Analog Dimming 5 — 100 % VEN_ON DC Voltage on CTRL Pin to Enable VEN Rising — 0.25 — V VEN_OFF DC Voltage on CTRL Pin to Disable VEN Falling — 0.2 — V
SWITCHING OPERATION
RON SW Switch On Resistance @ISW = 100mA — 0.2 — Ω ISW_LEAK SW Switch Leakage Current — — — 5 μA tSS Soft Start Time VIN = 16V, CEN = 1nF — 1.5 — ms VIN = 16V, VO = 9.6V (3 LEDs) fSW Operating Frequency — 250 — kHz L = 47μF, I = 0.25A (ILED = 1A) Recommended Minimum Switch ON tON_REC For 4% Accuracy — 500 — ns Time Recommended Maximum Switch fSW_MAX — — — 1.0 MHz Frequency DSW_MAX Maximum Duty Cycle — — 98 — % Internal Comparator Propagation tPD — — 100 — ns Delay (Note 8)
THERMAL SHUTDOWN
TOTP Over Temperature Shutdown — — +150 — °C TOTP_HYS Temperature Protection Hysteresis — — +30 — °C Note: 8. Guaranteed by design. AL8860Q 4 of 15 May 2019 Document number: DS41797 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated