ADP5304
Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation
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Overview
Features and Benefits
- Input start-up voltage range: 2.15 V to 6.50 V
- Operation down to 2.00 V
- Ultralow, 260 nA quiescent current with no load
- Selective output voltage from 1.2 V to 3.6 V (or 0.8 V to 5.0 V)
- ±2.5% output accuracy over the full temperature range
- Selectable hysteresis or pulse-width modulation (PWM) operation mode
- Output current up to 50 mA in hysteresis mode
- VINOK flag to monitor the input voltage
- Ultrafast stop switching control
- 100% duty cycle operation mode
- Quick output discharge (QOD) option
- Undervoltage lockout (UVLO), OCP, and thermal shutdown (TSD) protection
- 10-lead, 3 mm × 3 mm LFCSP package
- −40°C to +125°C operating junction temperature range
Product Details
The ADP5304 is a high efficient, ultralow quiescent current step-down regulator that draws only 260 nA of quiescent current to regulate the output at no load.The ADP5304 runs from an input voltage range of 2.15 V to 6.50 V, allowing the use of the multiple alkaline, NiMH, and Lithium cells, or the use of a high impedance power source. The output voltage is selectable from 0.8 V to 5.0 V by an external VID resistor to ground. The total solution requires only four tiny external components.
The ADP5304 operates in hysteresis mode via connecting the MODE pin to ground. In hysteresis mode, the regulator achieves excellent efficiency at a power of less than 1 mW and provides up to 50 mA of output load. The device enables very efficient power management to achieve the collection of small amounts of energy from the high impedance battery or the energy harvester to charge up the conventional capacitor or super capacitor.
The ADP5304 integrates an ultralow power comparator with a factory programmable voltage reference to monitor the voltage of the input power source. The voltage reference, with hysteresis, is the threshold for the stopping and starting of switching, allowing the use of the high impedance power source.
Other key features of the ADP5304 include separate enabling and an output discharge function (QOD). Safety features, such as overcurrent protection, thermal shutdown (TSD), and input undervoltage (UVLO), are also included.
The ADP5304 is available in 10-lead, 3 mm × 3 mm LFCSP package rated for the −40°C to +125°C junction temperature range.
Applications- Energy (gas, water) metering
- Energy harvesting applications
- Portable and battery-powered equipment
- Medical applications
- Keep-alive power supply
Product Categories
Markets and Technologies
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- Vital Signs Monitoring
- Electrocardiogram (ECG) Measurement
- Electroencephalogram (EEG) Measurement
- Non-Invasive Blood Pressure (NIBP)
- Respiration Rate Measurement
- Oxygen Saturation (SpO2) Measurement
- Body Composition, Hydration, Bioimpedance Analysis
- Insulin Pump
- Activity Tracking & Fall Detection
- Wearable Health Monitor
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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Energy Harvesting Powering IoT Node7/9/2021
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What Are the Best Applications for IoT in the New World of IC Power Management?5/6/2022 Analog Dialogue
Tools & Simulations
LTspice
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.
Models for the following parts are available in LTspice:
ADP5304-1
ADP5304-2
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP5304ACPZ-1-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| ADP5304ACPZ-2-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
ADP5304 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.