LM3561TMX National Semiconductor Corporation, LM3561TMX Datasheet - Page 2

• Manufacturer Part Number: LM3561TMX
• Description: Synchronous Boost Converter With 600ma High Side Led Driver And I2c-compatible Interface
• Manufacturer: National Semiconductor Corporation

www.national.com
Application Circuit Component List
Component
Connection Diagram
Pin Descriptions
COUT
LEDs
Pin
CIN
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
L
TX2/GPIO2/INT
TX1/TORCH/
Manufacturer
LEDI/NTC
STROBE
HWEN
Name
Lumiled
GPIO
Murata
Murata
GND
OUT
SDA
SCL
LED
SW
TDK
IN
Ground
Input Voltage Connection. Connect IN to the input supply and bypass to GND with a minimum
10µF ceramic capacitor.
Active Low Hardware Reset Input. This input is high impedance and cannot be left floating.
Typically this would be tied to a pullup resistor and to a logic high voltage, or VIN, in order to enable
the LM3561.
Drain Connection for Internal NMOS and Synchronous PMOS Switches
Active High Hardware Flash Enable. Drive STROBE high to turn on the Flash pulse. STROBE has
an internal 300kΩ pulldown to GND.
Serial Clock Input.
Step-Up DC/DC Converter Output. Bypass OUT to GND with a 10µF Ceramic Capacitor.
Configurable as a Flash Interrupt Input, a Hardware Torch Enable, or a Programmable General
Purpose Logic Input/Output. This pin has an internal 300kΩ pulldown to GND.
Serial Data Input/Output.
High Side Current Source Output for Flash LED.
Configurable as a High Side Current Source Output for Indicator LEDs or as a Threshold Detector
for LED Temperature Sensing.
Configurable as a Flash Interrupt Input, a Programmable General Purpose Logic Input/Output, or
as an Interrupt output for fault notification. This pin has an internal 300kΩ pulldown to GND.
3.6V@1A
Value
10µF
10µF
1µH
2
GRM188R60J106M
GRM188R60J106M
MLP2520-1R0
Part Number
LXCL-PWF4
30113903
Function
1.6×0.8×0.8 (0603)
1.6×0.8×0.8 (0603)
Size (mm)
2x2.5x1.2
Rating
1.5A
6.3V
6.3V
1.5A