Datasheet > ADP5304-EVALZ

ADP5304-EVALZ

更新时间： 2024-11-06 02:51:43

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Ultralow Power Step-Down Regulator for Energy Harvesting

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ADP5304-EVALZ 数据手册

Ultralow Power Step-Down Regulator

for Energy Harvesting

ADP5304

Data Sheet

FEATURES

TYPICAL APPLICATION CIRCUIT

2.2µH

= 2.15V TO 6.5V

OUT

Input supply voltage range: 2.15 V to 6.50 V

Operation down to 2.00 V typical

PVIN

10µF

ADP5304

10µF

Ultralow, 260 nA typical quiescent current with no load

Selective output voltage from 1.2 V to 3.6 V (or 0.8 V to 5.0 V)

2.5ꢀ output accuracy over the full temperature range

Output current up to 50 mA in hysteresis mode

VINOK flag to monitor the input voltage

PGND

OFF

MODE

VINOK

VID0: 1.2V VID8: 2.5V

VID1: 1.5V VID9: 2.6V

VID2: 1.8V VID10: 2.7V

VID3: 2.0V VID11: 2.8V

VID4: 2.1V VID12: 2.9V

VID5: 2.2V VID13: 3.0V

VID6: 2.3V VID14: 3.3V

VID7: 2.4V VID15: 3.6V

100ꢀ duty cycle operation mode

Quick output discharge (QOD) option

Undervoltage lockout (UVLO), overcurrent protection (OCP),

and thermal shutdown (TSD) protection

AGND

VID

EPAD

10-lead, 3 mm × 3 mm LFCSP package

−40°C to +125°C operating junction temperature range

Figure 1.

APPLICATIONS

Energy (gas, water) metering

Energy harvesting applications

Portable and battery-powered equipment

Medical applications

Keep-alive power supply

GENERAL DESCRIPTION

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.

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 the starting of the switching,

allowing the use of the high impedance power source.

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.

Other key features of the ADP5304 include separate enabling

and a QOD. Safety features, such as OCP, TSD, and input

UVLO are also included.

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

The ADP5304 is available in 10-lead, 3 mm × 3 mm LFCSP

package rated for the −40°C to +125°C junction temperature range.

Rev. 0

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

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