ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BUCK ADJ 250MA 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：250mA
- Frequency - Switching：-
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x2)
Download product information
Overview
The LT3470AIDDB#TRMPBF is a micropower step-down DC/DC converter manufactured by Analog Devices Inc. It integrates a 250mA power switch, catch diode, and boost diode into an 8-WFDFN package with exposed pad. The device operates from an input voltage range of 4V to 40V and provides an adjustable output voltage between 1.25V and 16V. It features a fixed switching frequency of 1.2MHz and supports Burst Mode operation for low quiescent current. The component is rated for junction temperatures from -40°C to 125°C.
Feature Summary
- Integrates power switch, catch diode, and boost diode in a compact surface-mount package
- Combines Burst Mode and continuous conduction for optimized efficiency across load ranges
- Supports external frequency synchronization via the SYNC pin
- Includes thermal shutdown and cycle-by-cycle current limiting protection
Applications
- Battery-powered portable instrumentation
- Industrial control systems with wide input voltage ranges
- Automotive electronics requiring high reliability
- Communication equipment power supplies
Procurement Notes
Verify the specific suffix TRMPBF indicates tape and reel packaging when ordering. Confirm the A-grade temperature rating matches system requirements. Ensure ESD precautions are observed during handling due to the exposed thermal pad design. Cross-reference datasheet revisions to confirm pinout compatibility with existing designs.
Selection Notes
Select this component for applications requiring a wide input voltage range up to 40V with moderate output current. The integrated boost diode simplifies design when stepping down from higher voltages. Consider the 1.2MHz switching frequency for balancing component size and efficiency. Evaluate thermal performance based on the DFN package's heat dissipation capabilities under maximum load conditions.
Part Context
This part belongs to the LT3470 family of micropower buck regulators. It shares architectural similarities with other members like the LT3470EDDB but differs in electrical specifications and temperature grades. The family is designed for space-constrained applications where low standby current and minimal external components are critical.
Replacement Considerations
LT3470EDDB#TRMPBF offers similar functionality with potentially different thermal or electrical characteristics. Verify pin-to-pin compatibility and ensure output current ratings meet application needs before substitution.
