AL5873

Document number: DS44751 Rev. 1 - 2

4 of 16

www.diodes.com

March 2022

© Diodes Incorporated

AL5873

Electrical Characteristics (@TA = -40°C to +125°C, VIN = +12V, unless otherwise specified.)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

VVIN_UVLO

VIN UVLO Voltage

VVIN Rising

4.75

5.0

5.25

V

VVIN_UVLO_HYS

VIN UVLO Hysteresis

VVIN Falling

—

300

—

mV

IVIN_Standby

Input Current in Standby Mode

Standby Mode, PWM is

“Low” for 7ms

—

186

—

µA

IDVCC_Q

Input Current in Normal Mode

Enabled, LEDX Floating, PWM is “H”, RSET is 48kΩ

—

0.7

—

mA

VIL_PWM

PWM Low Voltage

—

—

—

0.4

V

VIH_PWM

PWM High Voltage

—

1.4

—

—

V

IPWM_PD

PWM Internal Pulldown

VPWM = 5V

0.35

—

3.5

μA

tPWM_SHDN

Entrance Time for Standby Mode

When the PWM is

”L”

—

—

15

25

ms

VADIM

Typical Voltage Range for Analog

Dimming

For Analog Dimming 0%

—

0.3

—

V

For Analog Dimming 100%

—

1.5

—

VADIM_ON

Apply DC Voltage on ADIM Pin for

Analog Dimming on

VADIM Rising

—

—

0.35

V

VADIM_OFF

Apply DC Voltage on ADIM Pin for

Analog Dimming off

VADIM Falling

0.15

—

—

V

IADIM

ADIM sourcing Current

—

19

20

22

µA

VREF1

Reference Voltage 1

(Notes 6 & 7)

1.47

1.5

1.53

V

VREF2

Reference Voltage 2

(Notes 6 & 7)

1.47

1.5

1.53

V

ILED_NOM

Regulation Current for Channel 1

RSET = 48kΩ (Notes 6 & 7)

—

125

—

mA

VLEDX_REG

Minimum LED Regulation Voltage ILEDX = 125mA

—

0.5

—

V

ILEDX_LEAK

LEDX Leakage Current

VPWM = 0V, VLEDX = 12V

—

0.1

5

μA

ILEDX_ACCURACY

LED Current Accuracy

RSET = 48kΩ

-4

—

4

%

ILEDX_MATCH

LED Channel Current Matching

RSET = 48kΩ

-3

—

3

%

tLEDXSHDG

Short-Detection Deglitch

100% Duty-Cycle

—

5

—

ms

NLEDXSHDG

PWM Dimming (count the number of continuous

cycles when LED short is detected)

—

7

—

Cycles

tLEDXSH_HICCUP

LED Short Protection Hiccup Time

—

—

128

—

ms

tLEDXOPDG

Open-Detection Deglitch

100% Duty-Cycle

—

5

—

ms

NLEDXOPDG

PWM Dimming (count the number of continuous

cycles when LED open is detected)

—

7

—

Cycles

tLEDXOPDG_CYCLE

Open-Detection Deglitch Time per

Cycle

—

—

20

—

μs

tLEDXOP_HICCUP

LED Open Protection Hiccup Time

—

—

128

—

ms

VIL_FULL

FULL Low Voltage

—

—

—

0.4

V

VIH_FULL

FULL High Voltage

—

1.4

—

—

V

IPD_FULL

FULL Pull Down Current

—

—

2

—

μA

IF_PULLUP

FAULTB Pull-up Current

VFAULTB = 1.6V

—

500

—

μA

VF_PULLUP

FAULTB Pull-up Voltage

Fault Pin Floating

—

3

—

V

VFOL

FAULTB Output Low Voltage

IFAULTB = 1mA

—

—

600

mV

VFIN_TH

FAULTB Input Detect Threshold

Voltage

—

—

1.33

—

V

IF_LKG

FAULTB Leakage Current

VFAULTB = 5V

—

—

5

μA

TSHDN

Thermal Shutdown Threshold

—

—

+160

—

℃

TREC

Thermal Recovery Threshold

—

—

+130

—

℃

Notes:

6. Subject to maximum junction temperature of +150°C not being exceeded. The maximum ambient temperature range is limited by device power

dissipation; such that its junction temperature should be kept less than or equal to +150°C. See Page 11 for more information on power dissipation.

7

. Subject to thermal foldback function, the current of each channel becomes smaller than specs when the junction temperature is higher than thermal

foldback trigger point. See Page 11 for more information on thermal foldback function.