Overview
Features and Benefits
- Wide input voltage range of 4.5 V to 36 V
- Low minimum on time of
50 ns - Maximum load current of 1 A
- High efficiency of up to 94%
- Adjustable output down to 0.6 V
- ±1% output voltage accuracy
- Adjustable switching frequency of 300 kHz to
1 MHz
- Pulse skip mode at light load for power saving
- Precision enable input pin
- Open-drain power good
- External soft start with tracking
- Overcurrent-limit protection
- Reference similar product ADP2442 with synchronization capability.
- See data sheet for additional features.
Product Details
The ADP2441/ADP2442 is a constant frequency, current mode control, synchronous, step-down dc-to-dc regulator that is capable of driving loads up to 1 A with excellent line and load regulation characteristics. The ADP2441 operates with a wide input voltage range of 4.5 V to 36 V, which makes it ideal for regulating power from a wide variety of sources. In addition, the ADP2441 has very low minimum on time (50 ns) and is, therefore, suitable for applications requiring a very high step-down ratio.
The output voltage can be adjusted from 0.6 V to 0.9 V × VIN. High efficiency is obtained with integrated low resistance N-channel MOSFETs for both high-side and low-side devices.
The switching frequency is adjustable from 300 kHz to 1 MHz with an external resistor. The ADP2441 also has an accurate power-good (PGOOD) open-drain output signal.
At light load conditions, the regulator operates in pulse skip mode by skipping pulses and reducing switching losses to improve energy efficiency. In addition, at medium to heavy load conditions, the regulator operates in fixed frequency pulse-width modulation (PWM) mode to reduce electromagnetic interference (EMI).
The ADP2441 uses hiccup mode to protect the IC from short circuits or from overcurrent conditions on the output. The external programmable soft start limits inrush current during startup for a wide variety of load capacitances. Other key features include tracking, input undervoltage lockout (UVLO), thermal shutdown (TSD), and precision enable (EN), which can also be used as a logic level shutdown input.
The ADP2441 is available in a 3 mm × 3 mm, 12-lead LFCSP package and is rated for a junction temperature range of −40°C to +125°C.
Applications
- Point of load applications
- Distributed power systems
- Industrial control supplies
- Standard rail conversion to 24 V/12 V/5 V/3.3 V
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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UG-407: ADP2441 Evaluation Board2/14/2015
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CN0141: Quad Channel Analog Input with Open Wire Detection and HART Compatibility for PLC/DCS Applications (Rev. 0)4/2/2019
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CN0405: High Voltage Output DAC with Push-Button Control (Rev. 0)3/14/2017
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CN-0385: Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals (Rev. 0)10/10/2016
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CN0364: PLC/DCS Quad Channel Voltage and Current Input with HART Compatibility (Rev. 0)10/9/2015
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CN-0376: Channel-to-Channel Isolated Temperature Input (Thermocouple/RTD) for PLC/DCS Applications8/3/2015
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CN0325: PLC/DCS Universal Analog Input Using Either 4 or 6 Pin Terminal Block6/19/2014
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CN-0321: Fully Isolated, Single Channel Voltage and 4 mA to 20 mA Output with HART Connectivity8/13/2013
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EV 배터리의 숨은 공로자, BMS 기술4/20/2023
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Selecting the Right Inductor Current Ripple3/6/2023
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Noise from Different Switching Regulator Topologies4/1/2020
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Upper End Limitations of a Duty Cycle3/1/2020
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Bypass Capacitor and Coupling Capacitor: Stabilizing Voltage the Right Way11/1/2019
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PLC DCS Analog Input Module Design Breaks Barriers in Channel-to-Channel Isolation and High Density12/1/2016 Analog Dialogue
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Electromagnetic Flow Meters Achieve High Accuracy in Industrial Applications2/1/2014 Analog Dialogue
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Convert a Buck Regulator into a Smart LED Driver, Including Dimming3/1/2013 Analog Dialogue
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MS-2437: Convert a Buck Regulator into a Smart LED Driver1/24/2013
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADP2441
Design Tool
ADP244x Inverting Buck-Boost Design Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
ADP244x Buck Regulator Design Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Reference Designs (8)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP2441ACPZ-R2 | Material Declaration | Reliability Data | 12-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADP2441ACPZ-R7 | Material Declaration | Reliability Data | 12-Lead LFCSP (3mm x 3mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.