LP39542 Datasheet, PDF (3/58 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

Pin Descriptions
Pin #
6F
6E
6D
6C
6B
6A
5F
5E
5D
5C
5B
5A
4F
4E
4D
4C
4B
4A
3F
3E
3D
3C
3B
3A
2F
2E
2D
2C
2B
2A
1F
1E
1D
1C
1B
1A
Name
SW
FB
FLASH
R1
G1
B1
GND_SW
GND
V_DDIO
SDA
IRGB
GND_RGB
GND_WLED
IFLASH
SYNC_PWM
ADDR_SEL
NRST
R2
WLED5
WLED6
V_DD1
FLASH_EN
SCL
G2
WLED3
WLED4
ASE
IRT
GNDT
B2
WLED1
WLED2
GNDA
VREF
V_DDA
V_DD2
Type
Output
Input
Output
Output
Output
Output
Ground
Ground
Power
Logic Input/Output
Input
Ground
Ground
Input
Logic Input
Logic Input
Logic Input
Output
Output
Output
Power
Logic Input
Logic Input
Output
Output
Output
Input
Input
Ground
Output
Output
Output
Ground
Output
Power
Power
Description
Boost Converter Power Switch
Boost Converter Feedback
High Current Flash Output
Red LED 1 Output
Green LED 1 Output
Blue LED 1 Output
Power Switch Ground
Ground
Supply Voltage for Logic Input/Output Buffers and Drivers
Serial Data In/Out (I²C)
Bias Current Set Resistor for RGB Drivers
Ground for RGB Currents
Ground for WLED Currents
High Current Flash Current Set Resistor
External PWM Control for LEDs or External Clock for RGB Sync
Address Select (I²C)
Reset Pin
Red LED 2 Output
White LED 5 Output
White LED 6 Output
Supply Voltage
Enable for High Current Flash
Clock (I²C)
Green LED 2 Output
White LED 3 Output
White LED 4 Output
Audio Synchronization Input
Oscillator Frequency Resistor
Ground
Blue LED 2 Output
White LED 1 Output
White LED 2 Output
Ground for Analog Circuitry
Reference Voltage
Internal LDO Output
Supply Voltage
3
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