ADP5302
Info : RECOMMENDED FOR NEW DESIGNS
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ADP5302

50 mA/500 mA, Ultralow Power Step-Down Regulator with Battery Voltage Monitor

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 3
1ku List Price Starting From $1.12
Features
  • Input supply voltage range: 2.15 V to 6.50 V
  • Operates down to 2.00 V
  • Ultralow 240 nA quiescent current with no load
  • Selectable output voltages of 1.2 V to 3.6 V, or 0.8 V to 5.0 V
  • ±1.5% output accuracy over the full temperature range in pulse-width modulation (PWM) mode
  • Selectable hysteresis mode or PWM operation mode
  • Output current
    • Up to 50 mA in hysteresis mode
    • Up to 500 mA in PWM mode
  • VINOK flag to monitor input battery voltage
  • Ultrafast stop switching control
  • 100% duty cycle operation mode
  • 2 MHz switching frequency with optional synchronization input from 1.5 MHz to 2.5 MHz
  • Quick output discharge (QOD) option
  • UVLO, OCP, and TSD protection
  • 10-lead, 3 mm × 3 mm LFCSP package
  • Junction temperature: −40°C to +125°C
Additional Details
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The ADP5302 is a high efficiency, ultralow quiescent current step-down regulator that draws only 240 nA quiescent current to regulate the output at no load.

The ADP5302 runs from an input voltage of 2.15 V to 6.50 V, allowing the use of multiple alkaline or NiMH cells, Li-Ion cells, or other power sources. The output voltage is selectable from 0.8 V to 5.0 V by an external, dynamic voltage identification (VID) resistor and a factory fuse. The total solution requires only four tiny external components.

The ADP5302 can operate between hysteresis mode and PWM mode via the SYNC/MODE pin. In hysteresis mode, the regulator achieves excellent efficiency at less than 1 mW and provides up to 50 mA of output current. In PWM mode, the regulator produces a lower output ripple and supplies up to 500 mA of output current. The flexible configuration capability during operation of the device enables very efficient power management to meet both long battery life and low system noise requirements.

The ADP5302 integrates an ultralow power comparator with a factory programmable voltage reference to monitor the input battery voltage. The regulator runs at a 2 MHz switching frequency in PWM mode, and the SYNC/MODE pin can be synchronized to an external clock from 1.5 MHz to 2.5 MHz.

The ADP5302 includes an extra STOP pin that can temporarily disable the regulator switching; in this way, a quiet system environment can be achieved to benefit the noise sensitive circuitry, which includes data conversion, RF data transmission, and analog sensors.

Other key features in the ADP5302 include separate enabling, QOD, and safety features, such as overcurrent protection (OCP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).

The ADP5302 is available in a 10-lead, 3 mm × 3 mm LFCSP package rated for the −40°C to +125°C junction temperature range.

Applications

  • Energy (gas, water) metering
  • Portable and battery-powered equipment
  • Medical applications
  • Keep-alive power supplies
Part Models 3
1ku List Price Starting From $1.12

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP5302ACPZ-1-R7
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ADP5302ACPZ-2-R7
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ADP5302ACPZ-3-R7
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Product Lifecycle

PCN

Dec 4, 2015

- 15_0216

ADP5300,ADP5301,ADP5302,ADP5303,ADP5304 Die Revision

ADP5302ACPZ-1-R7

ADP5302ACPZ-2-R7

ADP5302ACPZ-3-R7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Dec 4, 2015

- 15_0216

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ADP5300,ADP5301,ADP5302,ADP5303,ADP5304 Die Revision

ADP5302ACPZ-1-R7

ADP5302ACPZ-2-R7

ADP5302ACPZ-3-R7

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-ADP5302

ADP5302 Evaluation Board

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EVAL-ADP5302

ADP5302 Evaluation Board

ADP5302 Evaluation Board

Product Detail

The ADP5302 is an ultralow power, synchronous step-down dc-to-dc regulator with a load switch in a 10-lead LFCSP package. The ADP5302 runs from input voltages of 2.15 V to 6.50 V and requires minimal external components to provide a high efficiency solution with an integrated power switch, synchronous rectifier, and internal compensation.

The ADP5302-EVALZ evaluation board provides an easy way to evaluate the device. The user guide UG-880 describes how to quickly set up the board to collect performance data.

Complete information about the ADP5302 is available in the ADP5302 data sheet, which should be consulted in conjunction with this user guide when using the evaluation board.

Tools & Simulations

Tools & Simulations 1

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.

Reference Designs

Reference Designs 1

Simplified Circuit Diagram for EVAL-CN0422-EBZ

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