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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 LT3482IUD#TRPBF is a high-voltage boost DC/DC converter manufactured by Analog Devices Inc., designed specifically for Avalanche Photodiode (APD) bias applications. It operates with an input voltage range of 2.5V to 16V and provides an adjustable output voltage up to 90V. The device integrates a dedicated current monitor for precise APD control, featuring a switch operating frequency between 650kHz and 1.1MHz. It delivers a maximum switch current of 280mA and is housed in a compact 16-pin QFN package.
Feature Summary
- Integrates a dedicated current monitor for accurate APD bias regulation
- Supports wide input voltage ranges from single-cell lithium sources
- Features adjustable switching frequency for optimized component selection
- Provides high-voltage step-up conversion capability
Applications
- Avalanche Photodiode (APD) bias supplies
- Optical communication systems requiring high-voltage bias
- Lidar and ranging system power management
- Single-cell lithium battery powered high-voltage generators
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the I-grade temperature rating aligns with your operational environment requirements. Ensure the 16-pin QFN footprint matches your PCB layout constraints. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility before finalizing procurement specifications.
Selection Notes
Select this component when an integrated APD current monitor is required alongside high-voltage generation. The adjustable frequency allows optimization for efficiency versus size trade-offs. Consider the 280mA switch current limit for load requirements. Verify that the 90V maximum output voltage meets the specific APD breakdown voltage needs of the target application design.
Part Context
This part belongs to the LT3482 family of high-voltage boost converters. It is distinct from other LT34xx series regulators by its specialized integration of APD current monitoring circuitry. The device serves as a key power management solution for optical sensing applications where precise bias control and high voltage are critical requirements.
Replacement Considerations
LT3482EUD#TRPBF offers identical functionality with extended industrial temperature range specifications. LT3905 variants provide similar boost capabilities but may differ in current monitor integration or package options. Verify electrical parameters and pinouts before substituting.
