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ADP5301ACBZ-3-R7 PDF预览

ADP5301ACBZ-3-R7

更新时间： 2024-11-05 19:58:03
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亚德诺 - ADI 开关
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21页 743K
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50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator

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ADP5301ACBZ-3-R7 数据手册

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50 mA/500 mA, High Efficiency,  
Ultralow Power Step-Down Regulator  
Data Sheet  
ADP5301  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
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  
1.5ꢀ 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  
100ꢀ 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 180 nA quiescent  
current to regulate the output at no load.  
The ADP5301 contains a VOUTOK flag, which monitors the  
output voltage and runs at a 2 MHz switching frequency in  
PWM mode. SYNC/MODE can synchronize to an external  
clock from 1.5 MHz to 2.5 MHz.  
The ADP5301 runs from an input startup voltage range of 2.15 V  
to 6.50 V, allowing the use of multiple alkaline/NiMH, 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 factory fuse. The  
total solution requires only four tiny external components.  
Other key features in the ADP5301 include separate enabling,  
quick output discharge (QOD), and safety features such as  
overcurrent protection (OCP), thermal shutdown (TSD), and  
input undervoltage lockout (UVLO).  
The ADP5301 can operate between hysteresis mode and PWM  
mode via the SYNC/MODE pin. The regulator in hysteresis mode  
achieves excellent efficiency at a power of less than 1 mW and  
provides up to 50 mA of output current. The regulator in PWM  
mode 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 the longest battery life and low system noise  
requirements.  
The ADP5301 is available in a 9-ball, 1.65 mm × 1.87 mm  
WLCSP rated for a −40°C to +125°C junction temperature range.  
Rev. C  
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 ©2015–2019 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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