Datasheet Texas Instruments LM3509SD/NOPB

High Efficiency Boost for White LED's and/or OLED Displays with Dual Current Sinks 10-WSON -40 to 85

Datasheets

PDF, 2.7 Mb, Revision: D, File published: May 3, 2013

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Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	No

Number of Channels	2
Duty Cycle(Max)	90 %
LED	10
LED Current Per Channel	30 mA
Operating Temperature Range	-40 to 85 C
Package Group	WSON
Package Size: mm2:W x L	See datasheet (WSON) PKG
Peak Efficiency	88 %
Rating	Catalog
Shutdown Current(Typ)	3.6 uA
Special Features	I2C Control
Switching Frequency(Max)	1250 kHz
Topology	Boost
Type	Inductive
Vin(Max)	5.5 V
Vin(Min)	2.7 V
Vout(Max)	21 V

RoHS

Compliant

Evaluation Modules & Boards: LM3509SDEV
LM3509SD Evaluation Board
Lifecycle Status: Active (Recommended for new designs)
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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

Series: LM3509 (3)