ADP2125
Info : RECOMMENDED FOR NEW DESIGNS
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ADP2125

Low Profile, 500 mA, 6 MHz, Synchronous Step-Down, DC-to-DC Converter

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 1
1ku List Price
price unavailable
Features
  • 1.26 V fixed output voltage
  • Clock signal enable
  • 6 MHz (maximum) operating frequency
  • 500 mA continuous output current
  • Input voltage: 2.1 V to 5.5 V
  • 0.3 μA (typical) shutdown supply current
  • Compatible with tiny multilayer inductors
  • Internal synchronous rectifier
  • Internal compensation
  • Internal soft start
  • Output to ground short-circuit protection
  • Current-limit protection
  • See data sheet for additional features
Additional Details
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The ADP2125 is a high frequency, step-down, dc-to-dc converter optimized for portable applications in which board area and battery life are critical constraints. Fixed frequency operation at 6 MHz enables the use of tiny ceramic inductors and capacitors. Additionally, the synchronous rectification improves efficiency and results in fewer external components. Over all load currents, the device uses a voltage regulating pulse-width modulation (PWM) mode that maintains a constant frequency with excellent stability and transient response. The ADP2125 is enabled by a 6 MHz to 27 MHz external clock signal applied to the EXTCLK pin. When the external clock is not switching and in a low state (EXTCLK ≤ 0.5 V), the input is disconnected from the output and draws less than 0.3 μA (typical) from the source.

The ADP2125 has an input voltage range of 2.1 V to 5.5 V, allowing the use of single Li+/Li polymer cell, three-cell alkaline, NiMH cell, and other standard power sources. The ADP2125 is internally compensated to minimize external components and can source up to 500 mA. Other key features such as cycle-by-cycle peak current limit, soft start, undervoltage lockout (UVLO), output-to-ground short-circuit protection, and thermal shutdown provide protection for internal and external circuit components.

APPLICATIONS

  • Mobile phones
  • Digital still/video cameras
  • Digital audio
  • Portable equipment
  • Camera modules
  • Image stabilization systems
Part Models 1
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP2125BCDZ-1.26R7
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Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

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Part Models

Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

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Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-ADP2125

ADP2125 Evaluation Board

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EVAL-ADP2125

ADP2125 Evaluation Board

ADP2125 Evaluation Board

Product Detail

The ADP2125 evaluation board is a complete 6 MHz (maximum), low quiescent current, synchronous buck dc-to-dc converter capable of producing up to 500 mA of output current at a fixed 1.26 V output voltage. The converter operates with an input voltage in the 2.1 V to 5.5 V range. The device uses a voltage regulating pulse-width modulation (PWM) that maintains a constant frequency with excellent stability and transient response. The evaluation board demonstrates the operation and performance of the ADP2125 as well as its compatibility with tiny ceramic components for a small area solution.

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