ADP2441
Info : RECOMMENDED FOR NEW DESIGNS
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ADP2441

36 V,1 A, Synchronous, Step-Down DC-DC Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.90
Features
  • 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.

Additional Details
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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
Part Models 2
1ku List Price Starting From $1.90

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP2441ACPZ-R2
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ADP2441ACPZ-R7
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Product Lifecycle

PCN

Aug 6, 2014

- 13_0223

Assembly and Test Transfer of Select 2x3mm and 3x3mm LFCSP Products to STATS ChipPAC China

Filter by Model

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Part Models

Product Lifecycle

PCN

Aug 6, 2014

- 13_0223

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Assembly and Test Transfer of Select 2x3mm and 3x3mm LFCSP Products to STATS ChipPAC China

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-ADP2441

ADP2441 Evaluation Board

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EVAL-ADP2441

ADP2441 Evaluation Board

ADP2441 Evaluation Board

Product Detail

The ADP2441 evaluation board is a complete, dc-to-dc switch-ing regulator design based on the ADP2441, a configurable, 1 A, synchronous step-down, dc-to-dc regulator.

The ADP2441 is a synchronous, step-down dc-to-dc switching regulator that uses a current mode pulse-width modulation (PWM) control scheme at medium-to-heavy load currents for high efficiency and smoothly transitions to a pulse skip mode at light loads to conserve power. The power switch and synchronous rectifier are integrated for minimal external part count and high efficiency. The ADP2441 is optimized for operation with small ferrite core inductors and ceramic capacitors to deliver the maximum output power per square millimeter of the PCB board area.

The ADP2441-EVALZ is available with 5 V at 1 A output, switching frequency set to 500 kHz. If needed, the ADP2441 evaluation board configuration can be modified by changing the values of the appropriate passive components.

Complete specifications for the ADP2441 device can be found in the ADP2441 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.

Tools & Simulations

Tools & Simulations 4

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