FAN5345 Driver Datasheet

FAN5345 Datasheet, PDF, Equivalent


Part Number

FAN5345

Description

Series Boost LED Driver

Manufacture

Fairchild Semiconductor

Total Page 15 Pages
Datasheet
Download FAN5345 Datasheet


FAN5345
September 2011
FAN5345
Series Boost LED Driver with Single-Wire Digital Interface
Features
Asynchronous Boost Converter
Drives LEDs in Series:
FAN5345S20X: 20V Output
FAN5345S30X: 30V Output
2.5V to 5.5V Input Voltage Range
Single-Wire Digital Control Interface to Set LED
Brightness Levels
32 Linear Steps
1.2MHz Fixed Switching Frequency
Soft-Start Capability
Input Under-Voltage Lockout (UVLO)
Output Over-Voltage Protection (OVP)
Short-Circuit Detection
Thermal Shutdown (TSD) Protection
Small Form-Factor 6-Lead SSOT23 Package
Applications
Cellular Mobile Handsets
Mobile Internet Devices
Portable Media Players
PDA, DSC, MP3 Players
Description
The FAN5345 is an asynchronous constant-current LED
driver that drives LEDs in series to ensure equal brightness
for all the LEDs. FAN5345S20X has an output voltage of
20V and can drive up to 5 LEDs in series. FAN5345S30X
has an output voltage of 30V and drive up to 8 LEDs in
series. Optimized for small form-factor applications, the
1.2MHz fixed switching frequency allows the use of small
inductors and capacitors.
The FAN5345 uses a simple single-wire digital control
interface to program the brightness levels of the LEDs in 32
linear steps by applying digital pulses.
For safety, the device features integrated over-voltage, over-
current, short-circuit detection, and thermal-shutdown
protection. In addition, input under-voltage lockout protection
is triggered if the battery voltage is too low.
The FAN5345 is available in a 6-lead SSOT23 package.
It is “green” and RoHS compliant. (Please see
http://www.fairchildsemi.com/company/green/index.html for
Fairchild’s definition of green).
Ordering Information
Part Number
FAN5345S20X
FAN5345S30X
.
Output Voltage Option
20V
30V
Temperature Range
-40 to 85°C
Package
6-Lead, Super-SOT™-6, JEDEC MO-193,
1.6mm Wide (MA06A)
© 2011 Fairchild Semiconductor Corporation
FAN5345 • Rev. 1.0.0
www.fairchildsemi.com

FAN5345
Typical Application Diagram
Block Diagram
Figure 1. Typical Application
Figure 2. Functional Block Diagram
© 2011 Fairchild Semiconductor Corporation
FAN5345 • Rev. 1.0.0
2
www.fairchildsemi.com


Features FAN5345 — Series Boost LED Driver with Single-Wire Digital Interface Septemb er 2011 FAN5345 Series Boost LED Drive r with Single-Wire Digital Interface F eatures  Asynchronous Boost Converte r  Drives LEDs in Series:  FAN534 5S20X: 20V Output  FAN5345S30X: 30V Output  2.5V to 5.5V Input Voltage R ange  Single-Wire Digital Control In terface to Set LED Brightness Levels 32 Linear Steps  1.2MHz Fixed Swit ching Frequency  Soft-Start Capabili ty  Input Under-Voltage Lockout (UVL O)  Output Over-Voltage Protection ( OVP)  Short-Circuit Detection  Th ermal Shutdown (TSD) Protection  Sma ll Form-Factor 6-Lead SSOT23 Package Ap plications  Cellular Mobile Handsets  Mobile Internet Devices  Portab le Media Players  PDA, DSC, MP3 Play ers Description The FAN5345 is an asyn chronous constant-current LED driver th at drives LEDs in series to ensure equa l brightness for all the LEDs. FAN5345S 20X has an output voltage of 20V and can drive up to 5 LEDs in series. FAN5345S30X has an output volt.
Keywords FAN5345, datasheet, pdf, Fairchild Semiconductor, Series, Boost, LED, Driver, AN5345, N5345, 5345, FAN534, FAN53, FAN5, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)