ADP5303

PRODUCTION

ADP5303

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

PRODUCTION

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

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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
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
9-ball, 1.65 mm × 1.87 mm WLCSP
Junction temperature: −40°C to +125°C

Additional Details

The ADP5303 is high efficiency, ultralow quiescent current step-down regulator that draws only 240 nA quiescent current to regulate the output at no load.

The ADP5303 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 VID resistor and a factory fuse. The total solution requires only four tiny external components.

The ADP5303 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 ADP5303 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.

Other key features in the ADP5303 include separate enabling, QOD, and safety features such as overcurrent protection (OCP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).

The ADP5303 is available in 9-ball, 1.65 mm × 1.87 mm WLCSP 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 supply

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Support

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Visit the ADI Support Page

Ask the ADI community for help.

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FAQs

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Part Models 2

1ku List Price Starting From $1.12

Technical Documents 3

ADP5303: 50 mA/500 mA, Ultralow Power Step-Down Regulator With Battery Voltage Monitor Data Sheet (Rev.B) 08/31/2015

UG-881: Evaluating the ADP5303 Ultralow Step-Down Regulator (Rev.0) 12/03/2015

AN-1406: Designing an Inverting Power Supply Using the ADP5300/ADP5301/ ADP5302/ADP5303 Ultralow Power, Step-Down DC-to-DC Regulators (Rev.0) 07/25/2016

Design Resources 2

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
ADP5303ACBZ-1-R7	9-Ball WLCSP (1.65mm x 1.87mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADP5303ACBZ-2-R7	9-Ball WLCSP (1.65mm x 1.87mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

ADP5303ACBZ-1-R7
Pin/Package Drawing
9-Ball WLCSP (1.65mm x 1.87mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADP5303ACBZ-2-R7
Pin/Package Drawing
9-Ball WLCSP (1.65mm x 1.87mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Dec 4, 2015

- 15_0216

ADP5300,ADP5301,ADP5302,ADP5303,ADP5304 Die Revision

ADP5303ACBZ-1-R7

PRODUCTION

ADP5303ACBZ-2-R7

PRODUCTION

pdf

PCN15_0216_Form

xls

Material_Report

Filter by Model

Part Models

Product Lifecycle

PCN

Dec 4, 2015

- 15_0216

ADP5300,ADP5301,ADP5302,ADP5303,ADP5304 Die Revision

ADP5303ACBZ-1-R7

PRODUCTION

ADP5303ACBZ-2-R7

PRODUCTION

pdf

PCN15_0216_Form

xls

Material_Report

EVAL-ADP5303

ADP5303 Evaluation Board

EVAL-ADP5303

ADP5303 Evaluation Board

Features and Benefits

Ultralow quiescent current
Input voltage monitoring
Few external components and compact solution size

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Product Detail

The ADP5303 is an ultralow power, synchronous step-down dc-to-dc regulator in a 9-lead WLCSP package. The ADP5303 runs from input voltages of 2.06 V to 6.5 V and requires minimal external components to provide a high efficiency solution with an integrated power switch, synchronous rectifier, and internal compensation.

The ADP5303 evaluation board provides an easy way to evaluate the device. This user guide describes how to quickly set up the board to collect performance data.

Complete information about the ADP5303 is available in the ADP5303 data sheet, which should be consulted in conjunction with user guide UG-881 when using the evaluation board.

Resources

PDF

UG-881: Evaluating the ADP5303 Ultralow Step-Down Regulator (Rev.0)

744.98 K

EVAL-ADP5303

ADP5303 Evaluation Board

LTspice 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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.