AL5801

Document number: DS35555 Rev. 3 - 2

2 of 11

www.diodes.com

July 2012

© Diodes Incorporated

AL5801

Pin Descriptions

Pin

Number

Pin

Name

Function

1

BIAS

Biases the open-Drain output MOSFET

2

FB

Feedback pin

3

OUT

Open-Drain LED driver output

4

Current sense pin. LED current sensing resistor should be connected from here to GND

5

COMP

Compensation pin. Connect COMP pin to REXT pin and insert a 1nF ceramic capacitor from COMP

pin to FB pin for improved transient stability

6

GND

Ground reference point for setting the LED current

Functional Block Diagram

Figure 1 Block Diagram

Symbol

Characteristics

Values

Unit

Output voltage relative to GND

100

V

BIAS voltage relative to GND (Note 4)

20

V

FB voltage relative to GND

6

V

COMP voltage relative to GND

6

V

REXT voltage relative to GND

6

V

Output current

350

mA

Operating junction temperature

-40 to +150

°C

Storage temperature

-55 to +150

°C

Note:

4. With pins 5 and 6 connected together.

These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure.

Operation at the absolute maximum rating for extended periods may reduce device reliability.