lm3508tl National Semiconductor Corporation, lm3508tl Datasheet - Page 2

• Manufacturer Part Number: lm3508tl
• Description: Synchronous Magnetic Constant Current White Led Driver
• Manufacturer: National Semiconductor Corporation

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Connection Diagram
Ordering Information
Pin Descriptions/Functions
Pin
A1
A2
A3
B1
B2
B3
C1
C2
C3
Part Number
LM3508TLX
LM3508TL
9-Bump (Large) µ-SMD (1.514mm x 1.514mm x 0.6mm) NS Package Number TLA09
PGND
AGND
Name
OUT
ILED
DIM
SET
SW
EN
IN
Power Ground Connection.
Inductor connection and drain connection for both NMOS and PMOS power devices.
Output capacitor connection, PMOS source connection for synchronous rectifier, and OVP
sensing node.
Regulated current source input.
Current source modulation input. A logic low at DIM turns off the internal current source. A logic
high turns the LEDs fully on (V
Input voltage connection.
Current sense connection and current source output. Connect a 1% resistor (R
PGND to set the maximum LED current (I
Enable input. A logic low at EN turns off the LM3508. A logic high turns the device on.
Analog ground. Connect AGND to PGND through a low impedance connection.
9-Bump micro SMD
9-Bump micro SMD
Package Type
Top View
NSC Package Drawing Top Mark
2
SET
TL09SDA
TL09SDA
=200mV). Apply a PWM signal at DIM for LED brightness control.
30004202
LED
Function
= 200mV/R
D31
D31
SET
) .
250 Units, Tape and Reel
3000 Units, Tape and Reel
Supplied As
SET
) from SET to