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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.2A 10MSOP
- 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)：4.3V
- Voltage - Input (Max)：38V
- Voltage - Output (Min/Fixed)：1.19V
- Voltage - Output (Max)：30V
- Current - Output：1.2A
- Frequency - Switching：200kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：10-MSOP-EP
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Overview
The LT3971EMSE#TRPBF is a monolithic buck switching regulator from Analog Devices, designed for high-efficiency power conversion. It operates with an input voltage range of 4.3V to 38V and delivers up to 1.2A of output current. The device features an adjustable switching frequency ranging from 200kHz to 2MHz, allowing optimization for size or efficiency. It incorporates Burst Mode operation to maintain low quiescent current of 2.8µA during light loads while keeping output ripple below 15mV. The component is housed in a compact 10-lead MSOP package with an exposed thermal pad, suitable for space-constrained applications.
Feature Summary
- Ultra-low quiescent current design ensures minimal power consumption during regulation and standby modes.
- Burst Mode operation maintains high efficiency at low output currents while minimizing output voltage ripple.
- Internally compensated current mode topology provides fast transient response and stable loop performance.
- Integrated high-efficiency switch and boost Schottky diode reduce external component count and thermal resistance.
Applications
- Battery-powered portable equipment requiring extended runtime
- Industrial systems with wide input voltage variations
- Embedded controllers needing efficient step-down regulation
- USB-powered devices with strict current limits
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer part number matches exactly to ensure correct electrical characteristics and pinout. Check for recent Product Change Notifications regarding material or manufacturing site updates. Ensure compatibility with existing PCB footprints for the 10-MSOP package. Validate supply chain authenticity through authorized distributors.
Selection Notes
Choose this regulator when input voltages exceed standard 5V or 12V rails but remain below 38V. Select for applications prioritizing low static current over maximum output current. Consider the adjustable frequency feature if electromagnetic interference filtering needs tuning. Evaluate thermal requirements based on the MSOP package's exposed pad capability. Compare against fixed-frequency alternatives if dynamic load responses vary significantly.
Part Context
This component belongs to the LT3971 family of step-down regulators, which are engineered for high-voltage, low-current applications. The series emphasizes energy efficiency through advanced switching topologies and low-power management features. It serves as a solution for modern electronics where battery life and thermal management are critical constraints.
Replacement Considerations
LT3971EMSE-5#PBF offers similar specifications with a fixed 5V output option. LT3971IMSE#TRPBF provides the same functionality in tube packaging instead of reel. LT3971IDD-5#PBF utilizes a DFN-10 package for different thermal profiles. Verify pin compatibility and thermal dissipation capabilities before substituting.
