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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 16QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost, Charge Pump
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：90V
- Current - Output：280mA (Switch)
- Frequency - Switching：650kHz ~ 1.1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
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Overview
The LT3482EUD#TRPBF is a monolithic 90V boost DC/DC converter designed for avalanche photodiode (APD) bias applications. It operates from an input voltage range of 2.5V to 16V and provides a regulated output up to 90V. The device integrates a high-voltage switch capable of delivering 280mA, with a switching frequency adjustable between 650kHz and 1.1MHz. It features a dedicated APD current monitor output for precise feedback control.
Feature Summary
- Integrates a high-voltage boost converter with an internal 90V rated switch
- Includes a dedicated current monitor output for accurate APD bias regulation
- Supports flexible switching frequency adjustment via external resistor
- Operates efficiently across a wide input voltage range
Applications
- Avalanche photodiode bias supply for optical receivers
- High-voltage power generation in portable instrumentation
- Lidar and laser ranging system bias circuits
- Medical imaging detector biasing
Procurement Notes
Verify the specific suffix #TRPBF confirms tape-and-reel packaging when ordering. Confirm that the EUD designation corresponds to the extended temperature grade required for your application environment. Cross-reference the manufacturer's latest datasheet revision to ensure pinout and electrical characteristics remain unchanged before finalizing procurement specifications.
Selection Notes
Select this component when a compact solution is needed for generating high voltages from low-voltage sources. Ensure the external inductor can handle the peak switch current without saturation. Verify that the thermal performance of the QFN package meets the requirements for the intended ambient operating conditions and duty cycle.
Part Context
This part belongs to the LT3482 family of high-voltage boost converters. It is distinct from lower voltage regulators and buck converters within the Analog Devices portfolio. The EUD variant specifies the package type and temperature range, differentiating it from other pin-compatible or functionally similar parts in the broader PMIC category.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Evaluate alternatives such as the LT3905 only if they meet the specific 90V output and APD monitor requirements. Verify compatibility with existing PCB layout and control loop compensation before substitution.
