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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4V ~ 60V
- Frequency - Switching：300kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-55°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
- Grade：-
- Qualification：-
Download product information
Overview
The LT3845MPFE#TRPBF is a high voltage synchronous current mode step-down controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V, featuring a minimum start-up voltage of 7.5V. The device supports adjustable operating frequencies from 100 kHz to 500 kHz and delivers up to 10A output current with a maximum output voltage of 36V. It functions within a temperature range of -55°C to +125°C and utilizes a 16-lead TSSOP package.
Feature Summary
- Synchronous current mode control architecture for medium to high power applications
- Onboard regulator simplifies biasing requirements by powering the IC directly from VIN
- Burst Mode operation reduces quiescent current to maintain high efficiency at light loads
- Reverse inductor current inhibit function improves light load efficiency
Applications
- High efficiency industrial power supplies
- Distributed power systems
- Point-of-load regulation modules
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required tape and reel packaging configuration. Ensure that the military grade designation aligns with environmental specifications. Request official datasheets and test reports to validate performance parameters against application requirements before finalizing procurement orders.
Selection Notes
Select this controller for designs requiring wide input voltage ranges and high efficiency under varying load conditions. Consider the thermal performance of the TSSOP package for heat dissipation needs. Evaluate the adjustable frequency range to optimize external component sizes and electromagnetic interference levels. Verify compatibility with downstream synchronous rectification MOSFETs for optimal system performance.
Part Context
This component belongs to the LT3845 series of high voltage synchronous buck controllers. It is designed for applications demanding robust performance across extreme temperature ranges. The MP prefix indicates a military-grade variant suitable for harsh environments. The FE suffix specifies the 16-lead TSSOP package type used in surface mount assemblies.
Replacement Considerations
LT3845EFE#TRPBF
FAQ
What is the minimum start-up voltage for the LT3845MPFE#TRPBF?
The device requires a minimum start-up voltage of 7.5V, although it operates within a wider input range of 4V to 60V.
How does the LT3845MPFE#TRPBF maintain efficiency at light loads?
It utilizes Burst Mode operation to reduce IC quiescent current and includes a reverse inductor current inhibit function to support discontinuous conduction mode.
