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Product Detailed Parameters
- Description：IC REG BUCK ADJ 200MA 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：16V
- Current - Output：200mA
- Frequency - Switching：-
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x2)
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Overview
The LT3470HDDB#TRMPBF is a micropower step-down DC/DC converter manufactured by Analog Devices Inc. It integrates a 300mA power switch, catch diode, and boost diode into an 8-pin ThinSOT-8 (TSOT-23-8) package. The device operates with an input voltage range of 4V to 40V and provides an adjustable output voltage from 1.25V to 16V. It delivers up to 200mA of output current with a typical quiescent current of 25µA. The switching frequency is fixed at 1.2MHz, and the component supports operation temperatures from -40°C to +150°C.
Feature Summary
- Integrates a 300mA power switch, catch diode, and boost diode for compact design
- Combines Burst Mode and continuous operation to minimize ripple and allow tiny passive components
- Supports high input voltages up to 40V with low quiescent current consumption
Applications
- Battery-powered portable equipment requiring high efficiency
- Automotive electronics systems operating within wide voltage ranges
- Industrial control modules needing reliable step-down regulation
Procurement Notes
Verify the specific suffix TRMPBF indicates tape and reel packaging when ordering. Confirm that the TSOT-23-8 package matches your PCB footprint requirements. Ensure the thermal performance of the exposed pad is adequate for your application's power dissipation levels. Cross-reference the datasheet for any automotive qualification details if required for your specific deployment environment.
Selection Notes
Select this component when a single-output buck regulator is needed with high input voltage tolerance. It is suitable for space-constrained designs due to its small TSOT-23-8 package. Consider the 1.2MHz switching frequency for balancing component size and efficiency. Verify that the 200mA output current meets the load requirements of the target circuit.
Part Context
This part belongs to the LT3470 family of micropower buck regulators from Analog Devices. The family includes variants like LT3470IDDB and LT3470HTS8, which share similar electrical characteristics but differ in package types such as DFN or TSOT-23. These devices are designed for applications requiring low noise and high efficiency in small form factors.
Replacement Considerations
LT3470HDDB#TRPBF is a verified substitute with identical electrical specifications and functionality. Both parts belong to the same LT3470 series and offer the same 300mA switch capability and 40V input range. Verify package compatibility before substitution.
