Pin descriptions, Functional block diagram, Absolute maximum ratings – Diodes AL5802 User Manual
Page 2
AL5802
Document number: DS35516 Rev. 9 - 2
2 of 11
March 2014
© Diodes Incorporated
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AL5802
Pin Descriptions
Pin Number
Name
Function
1
OUT
Open-collector LED driver output
2
BIAS
Biases the open collector output transistor
3
EN
Enable pin for PWM dimming. Provides access to the base of Q2 and collector of Q1
4
GND
Ground reference point for setting LED current
5 FB
Feedback pin.
Should be connected to pin 6.
6
REXT
Current sense pin. LED current sensing resistor should be connected from here to GND.
Functional Block Diagram
Fig. 1 Block Diagram
Absolute Maximum Ratings
Symbol
Characteristics Values
Unit
V
OUT
Output voltage relative to GND
30 V
V
BIAS
BIAS voltage relative to GND (Note 4)
30 V
V
FB
LED voltage relative to GND
6 V
V
EN
EN voltage relative to GND
6 V
V
REXT
REXT voltage relative to GND
6 V
I
OUT
Output current
150 mA
T
J
Operating junction temperature
-40 to +150
°C
T
ST
Storage temperature
-55 to +150
°C
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.
Note:
4. With pins 5 and 6 connected together.