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LT3475EFE#PBF

Led Driver, 2 Outputs, Buck, PWM Dimming, 4V-36V in, 600kHz switch, 15V/1.5A out, TSSOP-20

LINEAR TECHNOLOGY LT3475EFE#PBF

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Manufacturer Part No:
LT3475EFE#PBF
Order Code:
1663559
Technical Datasheet:
LT3475EFE#PBF   Datasheet
See all Technical Docs

Product Information

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:
Buck (Step Down)

:
4V

:
36V

:
15V

:
1.5A

:
2MHz

:
2Outputs

:
SMD

:
TSSOP

:
20Pins

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited
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Technical Docs (3)

Product Overview

The LT3475EFE#PBF is a dual step-down DC/DC Converter designed to operate as a constant-current source. An internal sense resistor monitors the output current allowing accurate current regulation ideal for driving high current LEDs. The high-side current sense allows grounded cathode LED operation. High output current accuracy is maintained over a wide current range, from 50mA to 1.5A, allowing a wide dimming range. Unique PWM circuitry allows a dimming range of 3000:1, avoiding the colour shift normally associated with LED current dimming. The high switching frequency offers several advantages, permitting the use of small inductors and ceramic capacitors. The constant switching frequency combined with low-impedance ceramic capacitors result in low, predictable output ripple. With its wide input range of 4 to 36V, the LT3475 regulates a broad array of power sources. Current mode PWM architecture provides fast transient response and cycle-by-cycle current limiting.
  • High-side current sense allows grounded cathode LED operation
  • Open LED and short-circuit protection
  • Anti-phase switching reduces ripple
  • Uses small inductors and ceramic capacitors

Applications

Automotive, Avionics, LED Lighting

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RM35.98

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