LM3532TMX-40ANOPB National Semiconductor Corporation, LM3532TMX-40ANOPB Datasheet - Page 3

• Manufacturer Part Number: LM3532TMX-40ANOPB
• Description: High Efficiency White Led Driver With Programmable Ambient Light Sensing Capability And I2c-compatible Interface
• Manufacturer: National Semiconductor Corporation

Pin Descriptions/Functions
Pin
C1
C2
C3
C4
D1
D2
D3
D4
A1
A2
A3
A4
B1
B2
B3
B4
HWEN
PWM2
PWM1
Name
ILED3
ILED2
ILED1
ALS1
ALS2
GND
OVP
SDA
SCL
INT
SW
T0
IN
Description
Output Voltage Sense Connection for Over Voltage Sensing. Connect OVP to the positive
terminal of the output capacitor.
Input Terminal to High Voltage Current Sink #3 (40V max). The boost converter regulates the
minimum of ILED1, ILED2, or ILED3 to 0.4V.
Input Terminal to High Voltage Current Sink #2 (40V max). The boost converter regulates the
minimum of ILED1, ILED2, or ILED3 to 0.4V.
Input Terminal to High Voltage Current Sink #1 (40V max). The boost converter regulates the
minimum of ILED1, ILED2, or ILED3 to 0.4V.
Ambient Light Sensor Input 1.
Ambient Light Sensor Input 2.
Active High Hardware Enable. Pull this pin high to enable the LM3532. HWEN is a high
impedance input.
Input Voltage Connection. Bypass IN to GND with a minimum 2.2 µF ceramic capacitor.
External PWM Brightness Control Input 2.
External PWM Brightness Control Input 1.
Programmable Interrupt Pin. INT is an open drain output that pulls low when the ALS changes
zones.
Ground
Serial Data Connection for I
Serial Clock Connection for I
Unused test input. This pin must be tied externally to GND for proper operation.
Drain Connection for boost converters internal NFET
3
2
C-Compatible Interface
2
C-Compatible Interface
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