Datasheet Linear Technology LT3466EDD#PBF

Manufacturer	Linear Technology
Series	LT3466
Part Number	LT3466EDD#PBF

Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes

Datasheets

PDF, 502 Kb, Revision: A, File uploaded: Oct 4, 2017

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Packaging

Package	3x3 DFN-10
Package Code	DD
Package Index	05-08-1699

Parametrics

Architecture	Average Output Current Control
Demo Boards	DC915A
Design Tools	LTspice File
Dimming	PWM, Analog
Export Control	no
Features	Integrated Schottky Diode, Soft Start, Resistor Set Frequency
Frequency	1000 kHz
Ishutdown	16 µA
Isupply	5 mA
Max Number of LEDs	2 x 10
Monolithic	yes
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Switch Current	0.4 A
Synchronous	no
Topology	Boost, LED Driver
Vin Max	24 V
Vin Min	2.7 V
Vout Max	39.5 V

Eco Plan

RoHS

Compliant

Design Notes

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Dual White LED Driver Features Integrated Switches and Schottky Diodes in 3mm Г— 3mm DFN Package &mdash DN1010
PDF, 67 Kb, File published: Mar 25, 2005
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advertisement Dual White LED Driver Features Integrated Switches and Schottky
Diodes in 3mm Г— 3mm DFN Package вЂ“ Design Note 1010
David Kim The LT3466 uses a constant-current, step-up architecture
to directly regulate LED current, providing consistent light
intensity and color across all LEDs regardless of variations in their forward voltage drop. Important features
including soft-start, open LED protection, adjustable
switching frequency and DC dimming control are integrated into the part, making the LT3466 LED driver an
ideal solution for space-constrained portable devices
such as cellular phones, PDAs and digital cameras.
Li-Ion to a 2-LED and a 4-LED Display
Figure 1 shows a white LED driver to backlight two
displays, a 4-LED main and a 2-LED sub display. This
design generates a constant 20mA in each white LED
string from Li-Ion (3V ~ 4.2V) or 5V adapter input. Two
independent dimming and shutdown controls (via CTRL1
3V TO 5V
CIN
1ВµF
L2
15ВµH L1
15ВµH
SW1
COUT1 …

Articles

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Tiny Device Drives 20 White LEDs from a Single Cell Li-Ion Battery &mdash LT Journal
PDF, 227 Kb, File published: May 1, 2004
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DESIGN FEATURES Tiny Device Drives 20 White LEDs from
by Gurjit Thandi
a Single Cell Li-Ion Battery
Introduction
White LEDs are gaining popularity as
the backlighting source for the LCD
displays used in handheld devices,
mainly due to their improved efficiency
and shrinking costs. White LEDs are
also making inroads into the larger
LCD displays used in automotive instrument panels and car radios. The
LT3466 simplifies the task of fitting
the LED driver circuitry into the latest devices by providing a dual high
efficiency, constant current white LED
driver in a space-saving 3mm Г— 3mm
DFN package. The LT3466 is designed
to drive up to 20 white LEDs from a
single cell Li-Ion battery input with
greater than 80% efficiency. It also
provides space-and component-sav-ings with integrated Schottky diodes
and internal compensation. 200mV, high accuracy (В±4%) reference
voltage is provided to program the LED
current. …

Model Line

Series: LT3466 (4)

LT3466EDD#PBF LT3466EDD#TRPBF LT3466EFE#PBF LT3466EFE#TRPBF

Manufacturer's Classification

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers

Other Names:

LT3466EDDPBF, LT3466EDD PBF

Slices

Microcontrollers