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Product Detailed Parameters
- Description：IC REG BUCK ADJ 200MA 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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：0°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x2)
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Overview
The LT3470EDDB#TRPBF 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 DFN EP package measuring 3mm x 2mm. 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 quiescent current of 25uA. The switching frequency is fixed at 1.2MHz, and it supports operation temperatures from -40°C to +85°C.
Feature Summary
- Integrates a 300mA power switch, catch diode, and boost diode within a compact footprint.
- Combines Burst Mode and continuous operation for low ripple output and efficient light-load performance.
- Enables the use of miniature inductors and capacitors due to high-frequency switching.
Applications
- Battery-powered portable equipment
- Automotive electronics systems
- Industrial control applications
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the EDDB variant corresponds to the automotive grade qualification if required for the target application environment. Ensure compatibility with the 8-pin DFN EP physical dimensions during PCB layout planning.
Selection Notes
Select this component for designs requiring a small solution size with integrated passive elements. The 1.2MHz frequency allows for smaller external components compared to lower-frequency regulators. Consider the 25uA quiescent current for battery life optimization in standby modes.
Part Context
This part belongs to the LT3470 series of micropower buck converters. It shares functional similarities with other variants like LT3470ETS8 but differs in package type and thermal characteristics. The series is designed for space-constrained applications needing reliable step-down conversion.
Replacement Considerations
LT3470EDDB#PBF offers the same electrical specifications in a tube package instead of tape and reel. LT3470IDDB variants provide industrial temperature range options. Verify pinout compatibility before substituting with other Buck regulators.
