Low

LT3571IUD#PBF - 

DC-DC Switching Boost Step Up Regulator, Adjustable, 2.7V-20V in, 75V/370mA out, 2.3MHz, QFN-16

LINEAR TECHNOLOGY LT3571IUD#PBF

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Manufacturer Part No:
LT3571IUD#PBF
Order Code:
2294935
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LT3571IUD#PBF is a current-mode step-up DC-to-DC Converter designed to bias avalanche photodiodes (APDs) in optical receivers with an output voltage up to 75V. The LT3571 features a high side fixed voltage drop APD current monitor with better than 10% relative accuracy over the entire temperature range. The integrated power switch, Schottky diode and APD current monitor allow a small solution footprint and low solution cost. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. The inductor-based topology ensures an input free from switching noise. The integrated high side current monitor produces a current proportional to the APD current with better than 10% relative accuracy over four decades of dynamic range in the input range of 250nA to 2.5mA. This current can be used as a reference to provide a digitally programmed output voltage via the CTRL pin.
  • Integrated Schottky diode
  • High side fixed voltage drop APD current monitor
  • Frequency synchronization
  • Constant-voltage and constant-current regulation
  • Programmable current limit protection
  • Surface mount components
  • Internal soft-start
  • Internal compensation
  • CTRL pin allows output adjustment with no polarity inversion
  • Up to 70V high APD voltage
  • <1µA Low shutdown current

Applications

Test & Measurement, Fibre Optics

Product Information

:
Boost (Step Up)
:
2.7V
:
20V
:
1Outputs
:
QFN
:
16Pins
:
370mA
:
-
:
75V
:
2.3MHz
:
125°C
:
Cut Tape
:
-
:
-
:
MSL 1 - Unlimited
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