Datasheet Linear Technology LT3466

Manufacturer	Linear Technology
Series	LT3466

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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Prices

Packaging

	LT3466EDD#PBF	LT3466EDD#TRPBF	LT3466EFE#PBF	LT3466EFE#TRPBF
N	1	2	3	4
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing
Package Code	DD	DD	FE	FE
Package Index	05-08-1699	05-08-1699	05-08-1663 (BB)	05-08-1663 (BB)
Pin Count	10	10	16	16

Parametrics

Parameters / Models	LT3466EDD#PBF	LT3466EDD#TRPBF	LT3466EFE#PBF	LT3466EFE#TRPBF
Architecture	Average Output Current Control	Average Output Current Control	Average Output Current Control	Average Output Current Control
Demo Boards	DC915A	DC915A	DC915A	DC915A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Dimming	PWM, Analog	PWM, Analog	PWM, Analog	PWM, Analog
Export Control	no	no	no	no
Features	Integrated Schottky Diode, Soft Start, Resistor Set Frequency	Integrated Schottky Diode, Soft Start, Resistor Set Frequency	Integrated Schottky Diode, Soft Start, Resistor Set Frequency	Integrated Schottky Diode, Soft Start, Resistor Set Frequency
Frequency, kHz	1000	1000	1000	1000
Ishutdown, µA	16	16	16	16
Isupply, mA	5	5	5	5
Max Number of LEDs	2 x 10	2 x 10	2 x 10	2 x 10
Monolithic	yes	yes	yes	yes
Number of Outputs	2	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Switch Current, A	0.4	0.4	0.4	0.4
Synchronous	no	no	no	no
Topology	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver
Vin Max, V	24	24	24	24
Vin Min, V	2.7	2.7	2.7	2.7
Vout Max, V	39.5	39.5	39.5	39.5

Eco Plan

	LT3466EDD#PBF	LT3466EDD#TRPBF	LT3466EFE#PBF	LT3466EFE#TRPBF
RoHS	Compliant	Compliant	Compliant	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

EMS supplier

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Microcontrollers