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ADP5301ACBZ-2-R7 PDF预览

ADP5301ACBZ-2-R7

更新时间： 2024-11-05 19:40:19
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亚德诺 - ADI 开关
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22页 820K
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50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator

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50 mA/500 mA, High Efficiency,  
Ultralow Power Step-Down Regulator  
Data Sheet  
ADP5301  
TYPICAL APPLICATION CIRCUIT  
FEATURES  
Input start-up voltage range: 2.15 V to 6.50 V  
Operates down to 2.00 V voltage  
Ultralow 180 nA quiescent current with no load  
Selectable output voltage of 1.2 V to 3.6 V or 0.8 V to 5.0 V  
1.5% output accuracy over full temperature range in  
PWM mode  
2.2µH  
V
= 3.6V  
10µF  
V
OUT  
IN  
PVIN  
EN  
SW  
ADP5301  
10µF  
(9-BALL WLCSP)  
ON  
PGND  
OFF  
HYS  
PWM  
SYNC/  
MODE  
Selectable hysteresis mode or PWM operation mode  
Output current  
FB  
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  
Up to 50 mA in hysteresis mode  
Up to 500 mA in PWM mode  
VOUTOK flag monitors the output voltage  
100% duty cycle operation mode  
2 MHz switching frequency with optional synchronization  
input from 1.5 MHz to 2.5 MHz  
VOUTOK  
VID  
R
VID  
AGND  
Figure 1.  
QOD option  
UVLO, OCP, and TSD protection  
9-ball, 1.65 mm × 1.87 mm WLCSP  
−40°C to +125°C junction temperature  
APPLICATIONS  
Energy (gas and water) metering  
Portable and battery-powered equipment  
Medical applications  
Keep-alive power supplies  
GENERAL DESCRIPTION  
The ADP5301 is a high efficiency, ultralow quiescent current  
step-down regulator that draws only a 180nA quiescent current  
to regulate the output at no load.  
The ADP5301 contains a VOUTOK flag, which monitors the  
output voltageand runs at a 2MHzswitching frequency in  
PWM mode. SYNC/MODE can synchronize to an external  
clock from 1.5MHzto 2.5 MHz.  
The ADP5301 runs from an input startup voltage range of 2.15V  
to 6.50 V, allowing the use ofmultiplealkaline/NiMH, Li-Ion  
cells, or other power sources. The output voltage is selectable from  
0.8 V to 5.0 V by an externalVID resistor and factory fuse. The  
totalsolution requires only fourtiny external components.  
Other key features in the ADP5301 include separateenabling,  
quick output discharge(QOD), and safety featuressuch as  
overcurrent protection (OCP), thermalshutdown(TSD), and  
input undervoltagelockout (UVLO).  
The ADP5301 can operatebetweenhysteresis mode and PWM  
mode via the SYNC/MODE pin. The regulator in hysteresis mode  
achieves excellent efficiency at a power of less than 1mW and  
provides up to 50 mA of output current. The regulator in PWM  
mode produces a lower output ripple andsuppliesup to 500 mA  
of output current. The flexible configuration capability during  
operation of the device enables very efficient power management  
to meet both the longest battery life and low systemnoise  
requirements.  
The ADP5301 is available in a 9-ball, 1.65 mm × 1.87 mm  
WLCSP rated for a −40°C to +125°C junctiontemperature range.  
Rev. B  
Document Feedback  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility isassumed by Analog Devicesfor its use,norfor any infringements of patents or other  
rights of third pa rties thatmay resultf rom its use.S pec if icatio ns s ubje ct to cha nge w ithoutnotice .No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices .  
Trademarks and registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2015–2016 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
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