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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 10MSOP
- 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)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.79V
- Voltage - Output (Max)：20V
- Current - Output：2A
- Frequency - Switching：200kHz ~ 2.4MHz
- Synchronous Rectifier：No
- Operating Temperature：-55°C ~ 150°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 LT3480MPMSE#TRPBF is a monolithic buck switching regulator from Analog Devices, designed for high-efficiency step-down conversion. It accepts input voltages up to 36V with over-voltage protection through 60V transients. The device delivers a maximum output current of 2A and features an adjustable switching frequency ranging from 200kHz to 2.4MHz. It incorporates a saturating switch with 0.25Ω on-resistance and an integrated boost Schottky diode. Quiescent current is 70µA at 12VIN to 3.3VOUT, dropping below 1µA in shutdown. Output voltage is adjustable from 0.79V to 20V using the 0.790V feedback reference. It operates in low ripple Burst Mode and includes soft-start and power good flag capabilities.
Feature Summary
- Wide input voltage range supporting operation from 3.6V to 36V with transient protection up to 60V
- Adjustable switching frequency allows optimization between efficiency and component size across 200kHz to 2.4MHz
- Low quiescent current and deep shutdown mode enhance battery life in portable applications
- Integrated boost diode and current mode topology ensure fast transient response and loop stability
Applications
- Automotive battery regulation systems
- Power supplies for portable products
- Distributed supply regulation in industrial equipment
Procurement Notes
Verify the M suffix indicates military-grade qualification and extended temperature range specifications. Confirm the MSE package variant matches the required thermal and footprint constraints. Ensure the TRPBF designation corresponds to the correct reel packaging format for automated assembly processes.
Selection Notes
Select this component when high input voltage tolerance and compact solution size are critical. The adjustable frequency feature allows designers to optimize external component values for specific space or cost constraints. Ensure the load requirements do not exceed the 2A continuous output capability and that thermal management suits the MSOP-10 package.
Part Context
This part belongs to the LT3480 family of step-down switching regulators manufactured by Analog Devices. It shares core architecture with variants like LT3480HMSE and LT3480IMSE, differing primarily in qualification grade and temperature rating. The family is characterized by high efficiency, wide input range, and small footprint solutions for power management applications.
Replacement Considerations
LT3480HMSE#TRPBF
FAQ
What is the maximum input voltage the LT3480 can withstand during transients?
The device provides over-voltage lockout protection that protects circuits through 60V transients, although normal operation is specified up to 36V.
How does the LT3480 maintain efficiency at low output currents?
It utilizes low ripple Burst Mode operation to maintain high efficiency at light loads while keeping output ripple below 15mV in typical applications.
