Datasheet ADP5304 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation |
| 页数 / 页 | 17 / 1 — Ultralow Power Step-Down Regulator. for Energy Harvesting. Data Sheet. … |
| 文件格式/大小 | PDF / 562 Kb |
| 文件语言 | 英语 |
Ultralow Power Step-Down Regulator. for Energy Harvesting. Data Sheet. ADP5304. FEATURES. TYPICAL APPLICATION CIRCUIT
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Ultralow Power Step-Down Regulator for Energy Harvesting Data Sheet ADP5304 FEATURES TYPICAL APPLICATION CIRCUIT Input supply voltage range: 2.15 V to 6.50 V 2.2µH V V IN = 2.15V TO 6.5V OUT PVIN SW Operation down to 2.00 V typical 10µF ADP5304 Ultralow, 260 nA typical quiescent current with no load 10µF Selective output voltage from 1.2 V to 3.6 V (or 0.8 V to 5.0 V) ON EN PGND OFF ±2.5% output accuracy over the full temperature range Output current up to 50 mA in hysteresis mode MODE FB VINOK flag to monitor the input voltage NC VINOK 100% duty cycle operation mode VID0: 1.2V VID8: 2.5V AGND VID VID1: 1.5V VID9: 2.6V Quick output discharge (QOD) option VID2: 1.8V VID10: 2.7V R0 VID3: 2.0V VID11: 2.8V Undervoltage lockout (UVLO), overcurrent protection (OCP), VID4: 2.1V VID12: 2.9V EPAD VID5: 2.2V VID13: 3.0V and thermal shutdown (TSD) protection VID6: 2.3V VID14: 3.3V
01 -0
VID7: 2.4V VID15: 3.6V
93
10-lead, 3 mm × 3 mm LFCSP package
134
−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 energy harvester to charge up the conventional capacitor or step-down regulator that draws only 260 nA of quiescent super capacitor. current to regulate the output at no load. The ADP5304 integrates an ultralow power comparator with a The ADP5304 runs from an input voltage range of 2.15 V to factory programmable voltage reference to monitor the voltage 6.50 V, allowing the use of the multiple alkaline, NiMH, and of the input power source. The voltage reference, with hysteresis, is Lithium cells, or the use of a high impedance power source. The the threshold for the stopping and the starting of the switching, output voltage is selectable from 0.8 V to 5.0 V by an external allowing the use of the high impedance power source. VID resistor to ground. The total solution requires only four Other key features of the ADP5304 include separate enabling tiny external components. and a QOD. Safety features, such as OCP, TSD, and input The ADP5304 operates in hysteresis mode via connecting the UVLO are also included. MODE pin to ground. In hysteresis mode, the regulator The ADP5304 is available in 10-lead, 3 mm × 3 mm LFCSP achieves excellent efficiency at a power of less than 1 mW and package rated for the −40°C to +125°C junction temperature range. 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
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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODE ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE VINOK FUNCTION CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE
01 -0
VID7: 2.4V VID15: 3.6V
93
10-lead, 3 mm × 3 mm LFCSP package
134
−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 energy harvester to charge up the conventional capacitor or step-down regulator that draws only 260 nA of quiescent super capacitor. current to regulate the output at no load. The ADP5304 integrates an ultralow power comparator with a The ADP5304 runs from an input voltage range of 2.15 V to factory programmable voltage reference to monitor the voltage 6.50 V, allowing the use of the multiple alkaline, NiMH, and of the input power source. The voltage reference, with hysteresis, is Lithium cells, or the use of a high impedance power source. The the threshold for the stopping and the starting of the switching, output voltage is selectable from 0.8 V to 5.0 V by an external allowing the use of the high impedance power source. VID resistor to ground. The total solution requires only four Other key features of the ADP5304 include separate enabling tiny external components. and a QOD. Safety features, such as OCP, TSD, and input The ADP5304 operates in hysteresis mode via connecting the UVLO are also included. MODE pin to ground. In hysteresis mode, the regulator The ADP5304 is available in 10-lead, 3 mm × 3 mm LFCSP achieves excellent efficiency at a power of less than 1 mW and package rated for the −40°C to +125°C junction temperature range. 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
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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODE ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE VINOK FUNCTION CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE