LM3509SDEV National Semiconductor, LM3509SDEV Datasheet - Page 3

• Manufacturer Part Number: LM3509SDEV
• Description: BOARD EVALUATION FOR LM3509SD
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3509SDEV

• Current - Output / Channel: 40mA
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 21V
• Features: Dimmable, I²C Interface
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: LM3509
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Connection Diagram
Ordering Information
Pin Descriptions/Functions
DAP
Order Number
Pin
10
LM3509SDX
1
2
3
4
5
6
7
8
9
LM3509SD
RESET/GPIO
SUB/FB
Name
MAIN
GND
OVP
SDA
SET
SCL
VIO
SW
IN
Package Type
10-Pin LLP
10-Pin LLP
Main Current Sink Input.
Secondary Current Sink Input or 1.25V Feedback Connection for Constant Voltage Output.
LED Current Setting Connection. Connect a resistor from SET to GND to set the maximum LED
current into MAIN or SUB/FB (when in LED mode), where I
Logic Voltage Level Input
Active Low Hardware Reset and Programmable General Purpose I/O.
Drain Connection for Internal NMOS Switch
Over-Voltage Protection Sense Connection. Connect OVP to the positive terminal of the output
capacitor.
Input Voltage Connection. Connect IN to the input supply, and bypass to GND with a 1µF ceramic
capacitor.
Serial Data Input/Output
Serial Clock Input
Ground
10-Pin LLP (3mm × 3mm × 0.8mm)
NSC Package Drawing
Top View
SDA010A
SDA010A
3
Function
Top Mark
L3509
L3509
1000 units, Tape-and-Reel, No-Lead
4500 units, Tape-and-Reel, No Lead
LED_MAX
= 192×1.244V/R
Supplied As
30004302
www.national.com
SET
.