ADP2441
PRODUCTION36 V,1 A, Synchronous, Step-Down DC-DC Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $2.40
Overview
- 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.
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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Design Note 1
Technical Articles 6
Circuit Note 7
Analog Dialogue 3
Webcast 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP2441ACPZ-R2 | 12-Lead LFCSP (3mm x 3mm w/ EP) | ||
| ADP2441ACPZ-R7 | 12-Lead LFCSP (3mm x 3mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 25, 2025 - 25_0054 Gold wire to Copper wire Conversion (Notification) |
||
| ADP2441ACPZ-R2 | PRODUCTION | |
|
Aug 6, 2014 - 13_0223 Assembly and Test Transfer of Select 2x3mm and 3x3mm LFCSP Products to STATS ChipPAC China |
||
| ADP2441ACPZ-R2 | PRODUCTION | |
| ADP2441ACPZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- ADP2441
SIMPLIS Models 1
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.
Open ToolADP244x 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.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
ADP2441 Evaluation Board
Resources
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