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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：55.2V
- Current - Output：3A (Switch)
- Frequency - Switching：200kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-TSSOP-EP
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Overview
The LT3434IFE#PBF is a monolithic buck switching regulator from Analog Devices, designed for high-voltage applications with an input range of 5.5 V to 60 V. It integrates a high-efficiency 3 A power switch with a typical on-resistance of 0.1 Ω. Operating at a fixed frequency of 200 kHz, the device provides an adjustable output voltage starting from 1.25 V. The IC features a shutdown function and operates within a temperature range of -40°C to +125°C. Packaged in a 16-lead TSSOP with an exposed pad, it supports surface-mount installation.
Feature Summary
- Integrates a high-efficiency 3 A power switch with low on-resistance
- Accepts wide input voltage range up to 60 V
- Includes internal oscillator and control logic for simplified design
- Features shutdown capability for power management
Applications
- Industrial point-of-load regulation
- High-voltage battery-powered systems
- Automotive electronics requiring robust voltage conversion
- General-purpose step-down DC-DC conversion
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status via official documentation. Check current availability as supply may be limited. Ensure proper handling for ESD-sensitive surface-mount packages. Validate datasheet revisions against specific production batches.
Selection Notes
Select this regulator for designs requiring high input voltages up to 60 V with moderate current demands. The 200 kHz switching frequency allows for compact passive component selection. Consider thermal performance due to the integrated switch dissipation. Ensure the application benefits from the wide input range and adjustable output flexibility provided by this topology.
Part Context
This component belongs to the LT3434 series of high-voltage buck regulators. It shares functional similarities with other members of the family but is distinguished by its specific pinout and package configuration. The series targets applications needing reliable step-down conversion from higher voltage rails without external power transistors.
Replacement Considerations
Direct substitutes include other Analog Devices high-voltage buck regulators such as the LT3430IFE-1#PBF or LT3474IFE#PBF, though electrical specifications differ. Verify compatibility regarding input voltage limits, output current capacity, and package dimensions before substitution.
