LT3482是90V Boost DC/DC Converter with APD Current Monitor

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LT3482 - LT3482是90V Boost DC/DC Converter with APD Current Monitor

LT3482是Linear公司的一款内部电源开关产品，LT3482是90V Boost DC/DC Converter with APD Current Monitor，本站介绍了LT3482的封装应用图解、特点和优点、功能等，并给出了与LT3482相关的凌力尔特元器件型号供参考。

LT3482 - 90V Boost DC/DC Converter with APD Current Monitor

LT3482 - 90V Boost DC/DC Converter with APD Current Monitor - Linear Technology（凌力尔特）

功能描述

The LT3482 is a fixed frequency current mode step-up DC/DC converter with voltage doubler designed to bias avalanche photodiodes (APDs) in optical receivers. It can provide up to 90V output. The LT3482 features high side APD current monitoring with better than 10% relative accuracy over the entire temperature range. The integrated power switch, Schottky diodes and APD current monitor allow a small converter footprint and low solution cost. Constant switching frequency results in predictable output noise that is easy to filter. The inductor-based topology ensures an input free from switching noise. An integrated high side current monitor produces a current proportional to 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. The LT3482 is available in the tiny footprint (3mm × 3mm) 16-lead QFN package.

特点

High Output Voltage: Up to 90V

Integrated Schottky Diodes

48V, 280mA Internal Switch

High Side APD Current Monitor

Adjustable Switching Frequency: 650kHz or 1.1MHz

Wide VIN Range: 2.5V to 16V

Surface Mount Components

Low Shutdown Current: <1µA

Soft-Start

Internal Compensation

CTRL Pin Allows Output Adjustment with No Polarity Inversion