LT3518HUF#PBF

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Analog Devices

FULL-FEATURED LED DRIVER WITH 2.3A SWITCH CURRENT

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LT3518HUF#PBF

Active

Analog Devices

FULL-FEATURED LED DRIVER WITH 2.3A SWITCH CURRENT

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DocumentsDatasheet R518 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3518HUF#PBF

Applications	Backlight
Current - Output / Channel	2.3 A
Dimming	Analog, PWM
Frequency [Max]	2.5 MHz
Frequency [Min]	250 kHz
Internal Switch(s)	True
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-WQFN Exposed Pad
Supplier Device Package	16-QFN (4x4)
Topology	Step-Down (Buck), Step-Up (Boost)
Type	DC DC Regulator
Voltage - Supply (Max)	30 V
Voltage - Supply (Min) [Min]	3 V

LT3518 Series

Full-Featured LED Driver with 2.3A Switch Current

Part	Voltage - Supply (Min) [Min]	Mounting Type	Voltage - Supply (Max)	Number of Outputs	Dimming	Current - Output / Channel	Package / Case	Frequency [Min]	Frequency [Max]	Applications	Type	Topology	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [custom]	Package / Case [custom]
Analog Devices LT3518EUF#PBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-WQFN Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-QFN (4x4)	-40 °C	125 ¯C
Analog Devices LT3518EFE#TRPBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-TSSOP Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-TSSOP-EP	-40 °C	125 ¯C	0.173 "	4.4 mm
Analog Devices LT3518IFE#PBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-TSSOP Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-TSSOP-EP	-40 °C	125 ¯C	0.173 "	4.4 mm
Analog Devices LT3518HFE#PBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-TSSOP Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-TSSOP-EP	-40 °C	150 °C	0.173 "	4.4 mm
Analog Devices LT3518HUF#PBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-WQFN Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-QFN (4x4)	-40 °C	150 °C
Analog Devices LT3518IUF#PBF	3 V	Surface Mount	30 V	1	Analog PWM	2.3 A	16-WQFN Exposed Pad	250 kHz	2.5 MHz	Backlight	DC DC Regulator	Step-Down (Buck) Step-Up (Boost)	16-QFN (4x4)	-40 °C	125 ¯C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 8.71
		10	$ 6.13
		25	$ 5.68

Description

General part information

LT3518 Series

The LT3518 is a current mode DC/DC converter with an internal 2.3A, 45V switch specifically designed to drive LEDs. The LT3518 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. Programmable switching frequency allows optimization of the external components for efficiency or component size. The switching frequency of the LT3518 can be synchronized to an external clock signal. The LED current is externally programmable with a 100mV sense resistor. The external PWM input provides 3000:1 LED dimming. The CTRL pin provides further 10:1 dimming ratio.The LT3518 is available in the tiny footprint 16-lead QFN (4mm × 4mm) and the 16-pin TSSOP package. The LT3518 provides a complete solution for both constant-voltage and constant-current applications.ApplicationsDisplay BacklightingAutomotive and Avionic LightingIlluminationScanners