Datasheet Texas Instruments LM3550SPX/NOPB — Datenblatt

Sample &
Buy Product
Folder Support &
Community Tools &
Software Technical
Documents Reference
Design LM3550
SNVS569C – MAY 2009 – REVISED OCTOBER 2016 LM3550 5-A Super-Capacitor Flash LED Driver
1 Features 3 Description The LM3550 device is a low-noise, switchedcapacitor DC-DC converter designed to operate as a
current-limited and adjustable (up to 5.3 V) supercapacitor charger. The LM3550 features userselectable termination voltages and provides one
adjustable constant current output (up to 200 mA)
and one NFET controller ideal for driving one or more
high-current LEDs in a high-power flash mode or a
low-power torch mode. 1 Up to 5 A Flash Current
4 Selectable Super-Capacitor Charge Voltage
Levels (4.5 V, 5 V, 5.3 V, Optimized)
Adjustable Torch Current (60 mA to 200 mA)
Ambient Light or LED Thermal Sensing With
Current Scaleback
Dedicated Indicator LED Current Source
No Inductor Required
Programmable Flash Pulse Duration, and Torch
and Flash Currents via I2C-Compatible Interface …