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ADP5303ACBZ-2-R7 PDF预览

ADP5303ACBZ-2-R7

更新时间： 2024-11-05 21:21:59
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亚德诺 - ADI 电池开关
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21页 756K
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50 mA/500 mA, Ultralow Power Step-Down Regulator with Battery Voltage Monitor

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ADP5303ACBZ-2-R7 数据手册

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50 mA/500 mA, Ultralow Power Step-Down  
Regulator With Battery Voltage Monitor  
Data Sheet  
ADP5303  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
Input supply voltage range: 2.15 V to 6.50 V  
Operates down to 2.00 V  
V
=
IN  
2.2µH  
V
2.15V TO 6.50V  
OUT  
PVIN  
EN  
SW  
10µF  
Ultralow 240 nA quiescent current with no load  
Selectable output voltages of 1.2 V to 3.6 V, or 0.8 V to 5.0 V  
1.5ꢀ output accuracy over the full temperature range in  
pulse-width modulation (PWM) mode  
Selectable hysteresis mode or PWM operation mode  
Output current  
Up to 50 mA in hysteresis mode  
Up to 500 mA in PWM mode  
VINOK flag to monitor input battery voltage  
100ꢀ duty cycle operation mode  
ADP5303  
10µF  
(WLCSP-9)  
ON  
PGND  
OFF  
PWM  
HYS  
SYNC/  
MODE  
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  
VINOK  
VID  
R0  
AGND  
2 MHz switching frequency with optional synchronization  
input from 1.5 MHz to 2.5 MHz  
Figure 1.  
Quick output discharge (QOD) option  
UVLO, OCP, and TSD protection  
9-ball, 1.65 mm × 1.87 mm WLCSP  
Junction temperature: −40°C to +125°C  
APPLICATIONS  
Energy (gas, water) metering  
Portable and battery-powered equipment  
Medical applications  
Keep-alive power supply  
GENERAL DESCRIPTION  
The ADP5303 is high efficiency, ultralow quiescent current  
step-down regulator that draws only 240 nA quiescent current  
to regulate the output at no load.  
The ADP5303 integrates an ultralow power comparator with a  
factory programmable voltage reference to monitor the input  
battery voltage. The regulator runs at a 2 MHz switching frequency  
in PWM mode and the SYNC/MODE pin can be synchronized  
to an external clock from 1.5 MHz to 2.5 MHz.  
The ADP5303 runs from an input voltage of 2.15 V to 6.50 V,  
allowing the use of multiple alkaline or NiMH cells, 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 a factory fuse. The  
total solution requires only four tiny external components.  
Other key features in the ADP5303 include separate enabling,  
QOD, and safety features such as overcurrent protection (OCP),  
thermal shutdown (TSD), and input undervoltage  
lockout (UVLO).  
The ADP5303 can operate between hysteresis mode and PWM  
mode via the SYNC/MODE pin. In hysteresis mode, the regulator  
achieves excellent efficiency at less than 1 mW and provides up  
to 50 mA of output current. In PWM mode, the regulator  
The ADP5303 is available in 9-ball, 1.65 mm × 1.87 mm  
WLCSP package rated for the −40°C to +125°C junction  
temperature range.  
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 long battery life and low system noise requirements.  
Rev. B  
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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