AL8863

Document number: DS42198 Rev. 1 - 2

4 of 13

www.diodes.com

August 2019

© Diodes Incorporated

AL8863

Symbol

Parameter

Rating

Unit

Junction-to-Ambient Thermal Resistance

56

°C/W

Junction-to-Case(Top) Thermal Resistance

6

°C/W

Note: 5. Device mounted on 2"*2" FR-4 substrate PC board, 2oz copper, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

INPUT VOLTAGE (VIN)

VIN

Input Voltage

—

4.5

—

60

V

UVLO

VIN UVLO Rising Threshold

—

—

4.3

—

V

VIN UVLO Hysteresis

—

—

150

—

mV

Quiescent Current

DIM pin floating

—

600

—

µA

CURRENT REGULATION (VIN, CSN)

Mean Current Sense Threshold Voltage

Measured on CSN Pin with

Respect to VIN

95

100

105

mV

Sense Threshold Hysteresis

—

—

13

—

mV

CSN Pin Input Current

—

16

—

µA

GATE DRIVER (DRV)

Gate Driver Output Voltage High

9

—

—

V

Gate Driver Output Voltage Low

—

—

0.5

V

Gate Driver Clamp Voltage

—

—

15

V

Gate Driver Rising Time

—

100

—

ns

Gate Driver Falling Time

—

60

—

ns

Gate Driver High Side Resistance

—

5.7

—

Ω

Gate Driver Low Side Resistance

—

2.2

—

Ω

PWM DIMMING (DIM)

Recommended PWM Dimming

Frequency

—

0.1

—

20

kHz

DIM Logic High Level

—

2.6

—

5.5

V

DIM Logic Low Level

—

—

—

0.3

V

SWITHCING OPERATION

Recommended Maximum Switching

Frequency

—

—

—

1

MHz

Recommended Minimum Switch ON

Time

For 4% Accuracy

—

500

—

ns

Internal Comparator Propagation Delay

—

—

100

—

ns

OUTPUT SHORTED PROTECTION (CSN, OSP)

Output Short Threshold Voltage

—

—

1

—

V

Delay Time for Fault Detection

—

—

23

—

ms

FAULT FLAG (FAULT)

FAULT Output Low Voltage

—

—

700

mV

THERMAL FOLD-BACK (NTC)

NTC Upper Threshold Voltage

Thermal fold-back starts

—

1.3

—

V

NTC Lower Threshold Voltage

Thermal fold-back stops

—

1

—

V

NTC Internal Bias Current

—

95

100

105

µA

THERMAL SHUTDOWN

Thermal Shutdown Threshold

—

—

+165

—

°C

Thermal Shutdown Hysteresis

—

—

+30

—

°C