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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 340MA 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Negative
- Topology：Buck, Boost, Charge Pump, Flyback
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：-2.5V
- Voltage - Output (Max)：-38V
- Current - Output：340mA (Switch)
- Frequency - Switching：-
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LT3483AEDC is an inverting micropower DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 2.5 V to 16 V and delivers a negative output voltage up to -38 V. The device provides an output current capability of 200 mA while maintaining a low quiescent current of 40 uA. It functions at a switching frequency of 150 kHz and is housed in a DFN-6 package. The component supports operation within a temperature range of -40°C to +85°C and includes shutdown functionality for power management.
Feature Summary
- Inverting topology generates negative voltage from positive input
- Micropower design ensures minimal quiescent current consumption
- Integrated Schottky rectifier simplifies external component requirements
- Shutdown pin enables active power control
Applications
- Battery-powered portable electronics requiring negative rail generation
- Sensor interfaces needing dual polarity supply voltages
- Microcontroller systems with single positive supply constraints
- Industrial instrumentation utilizing RS-232 or similar serial communication standards
Procurement Notes
Verify the specific suffix and tape/reel configuration against official Analog Devices documentation before procurement. Confirm that the DFN-6 package variant matches the required PCB footprint and thermal dissipation characteristics for the target application environment. Ensure compliance with RoHS directives and check for any regional distribution restrictions or obsolescence notices associated with this specific part number revision.
Selection Notes
Select the LT3483AEDC when a compact solution is needed to generate a stable negative voltage from a single positive source. Its low quiescent current makes it suitable for battery-operated devices where standby power conservation is critical. The integrated Schottky diode reduces the bill of materials compared to discrete solutions. Consider the 150 kHz switching frequency regarding EMI constraints and inductor size requirements for the specific layout.
Part Context
The LT3483 belongs to the Linear Technology (now Analog Devices) family of micropower DC/DC converters. It is designed as a space-efficient alternative to larger inverting regulator modules. The device integrates the switch, controller, and rectifier into a small footprint, distinguishing it from standard boost converters which only produce positive outputs. It serves as a key component in mixed-signal circuits requiring both positive and negative supply rails.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with direct functional equivalents such as the LT3483AEDC#PBF or other inverting converters from Analog Devices based on exact electrical parameter matching.
