Datasheet Texas Instruments LM3633YFQT

Complete Lighting Power Solution for Smartphone Handsets 20-DSBGA -40 to 85

Datasheets

PDF, 1.5 Mb, File published: Jun 4, 2014

Extract from the document

Lifecycle Status	Preview (Device has been announced but is not in production. Samples may or may not be available)
Manufacture's Sample Availability	No

Approx. Price (US$)	0.70 \| 1ku
Channels(#)	3
Duty Cycle(Max)(%)	94
LED Current Per Channel(mA)	30
LED(#)	21
Operating Temperature Range(C)	-40 to 85
Package Group	DSBGA
Package Size: mm2:W x L (PKG)	See datasheet (DSBGA)
Peak Efficiency(%)	90
Rating	Catalog
Shutdown Current(Typ)(uA)	1
Special Features	Adjustable Switch Frequency Analog Dimming CABC Enable/Shutdown I2C Control Integrated Switch OVP Synchronous Rectification Thermal Shutdown
Switching Frequency(Max)(kHz)	1100
Topology	Boost
Type	Inductive
Vin(Max)(V)	5.5
Vin(Min)(V)	2.7
Vout(Max)(V)	41

RoHS	Not Compliant
Pb Free	No

Evaluation Modules & Boards: LM3633EVM
LM3633EVM Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
- Download

Download
Analog PWM Dimming in White-LED Drivers
PDF, 539 Kb, File published: Dec 21, 2016
Pulse-width modulation (PWM) is a common type of dimming used to adjust the current in white-LEDdriver devices. PWM dimming takes a rectangle waveform with variable positive duty cycle (D) and adjuststhe LED current proportionally. For many smaller format white LED drivers (7-inch screen size or smaller),the PWM signal is converted to a DC control voltage and made to drive the LED current in
Download
Schottky Diode Selection in Asynchronous Boost Converters
PDF, 491 Kb, File published: Sep 6, 2016
Asynchronous boost converters require a Schottky diode as the rectifying element due to the diode's lowforward voltage and fast turn-on time. Because of these characteristics asynchronous boost converterscan have as good as, or better efficiency, than synchronous boost converters. This is especially true whenthe boost conversion ratios (VOUT/VIN) are high, and the Schottky diode conduction t
Download
Inductor Selection in Boost Converters for LCD Backlight Applications
PDF, 764 Kb, File published: Oct 24, 2016
White LED drivers for LCD back-light applications are often designed for battery-powered devices. This makes circuit size and efficiency crucial. Because of this, selecting the optimal inductor is one of the mostimportant aspects of the design. This application note discusses the important parameters of the inductorand how to select the right inductor for the application.

Series: LM3633 (2)