16-Channel Constant-Current Latched LED Driver

with Open LED Detection and Dot Correction

A6285

5

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Characteristic

Symbol

Test Conditions

Min.

Max.

Unit

Logic Supply Voltage Range

Operating

3.0

5.0

5.5

V

LED Load Supply Output Voltage

Operating

–

–

12.0

V

Undervoltage Lockout

2.5

2.7

2.9

V

2.3

2.5

2.7

V

Output Current

70

80

90

mA

35

40

45

mA

Err

All outputs on

–

+1.0

+4.0

%

All outputs on

–

+1.0

+4.0

%

Load Regulation

All outputs on

–

–

+6.0

%

Output Leakage Current

–

–

0.5

μA

Logic Input Voltage

V

GND

–

V

Logic Input Voltage Hysteresis

All digital inputs

250

–

900

mV

Logic Input Current

All digital inputs

–1

–

1

μA

SDO Voltage

–

–

0.5

V

–

–

V

–

–

6

mA

–

–

17

mA

data transfer 30 MHz

–

–

25

mA

data transfer 30 MHz

–26

35

mA

FAULT Output

–

–

0.4

V

–

–

1

μA

Active Pull-up

–

2.8

–

mA

Thermal Shutdown Temperature

Temperature increasing

–

165

–

°C

Thermal Shutdown Hysteresis

–15–°C

Open LED Detection Threshold

–

0.30

0.40

V

1.21

1.25

1.31

V

individual units, within the specified maximum and minimum limits.

Operating Characteristics