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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 9A 28LQFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tray
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：24V
- Current - Output：9A
- Frequency - Switching：400kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-VFQFN Exposed Pad
- Supplier Device Package：28-LQFN (5x4)
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Overview
The LT3120JV#PBF is a monolithic buck-boost DC/DC converter from Analog Devices Inc., housed in an LQFN-24 package. It operates with an input voltage range of 2.5V to 26V and provides an adjustable output voltage from 0.8V to 24V. The device integrates low RDS(ON) N-channel DMOS power switches to minimize external component count and maximize efficiency. It utilizes average current mode control for simplified voltage loop compensation and robust transient response. A proprietary low-noise switching algorithm optimizes efficiency across all operating modes, ensuring seamless transitions whether the input voltage is above, below, or equal to the output voltage.
Feature Summary
- Integrates low RDS(ON) N-channel DMOS power switches to reduce solution complexity and enhance conversion efficiency.
- Employs average current mode control architecture to simplify voltage loop compensation and improve line and load transient response.
- Features a proprietary low-noise switching algorithm that maintains optimized efficiency regardless of input versus output voltage relationships.
Applications
- Battery-powered systems requiring stable regulation across varying cell voltages
- Industrial applications with wide input voltage fluctuations
- Automotive electronics managing supply variations
Procurement Notes
Verify the specific suffix JV#PBF against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with required thermal management solutions for the LQFN-24 footprint. Cross-reference pinouts with the latest datasheet revision to prevent integration errors during PCB layout and assembly processes.
Selection Notes
Select this component when a single-stage buck-boost topology is required to handle input voltages that may rise above or fall below the desired output level. The integrated switch design reduces bill of materials cost compared to discrete solutions. Consider the average current mode control benefits for applications demanding precise load regulation without complex external compensation networks.
Part Context
The LT3120 belongs to Analog Devices' family of high-efficiency synchronous buck-boost converters. It is designed to replace traditional multi-stage solutions or boost/buck-only regulators in applications where input voltage stability cannot be guaranteed. The LQFN-24 package offers a compact footprint suitable for space-constrained designs while providing adequate thermal dissipation for continuous operation.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Generic cross-references may not match the specific average current mode control characteristics or integrated switch specifications.
