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ADP5300ACPZ-1-R7

更新时间： 2024-09-16 01:07:39
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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  
ADP5300  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
2.2µH  
Input supply voltage range: 2.15 V to 6.50 V  
Operates down to 2.00 V voltage  
V
= 2.15 TO 6.50V  
V
IN  
OUT  
PVIN  
SW  
10µF  
ADP5300  
Ultralow 180 nA quiescent current  
Selectable output voltage of 0.8 V to 5.0 V  
1.5ꢀ output accuracy over full temperature range in  
PWM mode  
10µF  
ON  
OFF  
PGND  
EN  
PWM  
HYS  
FB  
SYNC/MODE  
STOP  
SW  
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  
Selectable hysteresis mode or PWM operation mode  
Output current  
Up to 50 mA in hysteresis mode  
VOUTOK  
STOP  
AGND  
VID  
R0  
EPAD  
Up to 500 mA in PWM mode  
VOUTOK flag monitors the output voltage  
Ultrafast stop switching control  
Figure 1.  
100ꢀ duty cycle operation mode  
2.0 MHz typical switching frequency in PWM mode with  
optional SYNC clock range from 1.2 MHz to 2.5 MHz  
Quick output discharge (QOD) option  
UVLO, OCP, and TSD protection  
10-lead, 3 mm × 3 mm LFCSP  
−40°C to +125°C operating temperature range  
APPLICATIONS  
Energy (gas and water) metering  
Portable and battery-powered equipment  
Medical applications  
Keep-alive power supplies  
GENERAL DESCRIPTION  
The ADP5300 is a high efficiency, ultralow quiescent current  
step-down regulator that draws only 180 nA quiescent current  
to regulate the output.  
The ADP5300 contains a VOUTOK flag, which monitors the  
output voltage and runs at a 2 MHz switching frequency in  
PWM mode. SYNC/MODE can be synchronized to an external  
clock from 1.2 MHz to 2.5 MHz.  
The ADP5300 runs from an input supply voltage range of 2.15 V  
to 6.50 V, allowing the use of multiple alkaline or 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.  
The ADP5300 includes an STOP pin that can disable the regulator  
switching temporarily, in this way a quiet system environment  
can be achieved to benefit noise sensitive circuitry, such as data  
conversion, RF data transmisson, and analog sensing.  
The ADP5300 can operate between hysteresis mode and pulse-  
width modulation (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.  
Other key features in the ADP5300 include separate enabling,  
QOD, and safety features such as overcurrent protection (OCP),  
thermal shutdown (TSD), and input undervoltage lockout (UVLO).  
The ADP5300 is available in a 10-lead, 3 mm × 3 mm LFCSP  
rated for a −40°C to +125°C operating temperature range.  
Multifunction pin names may be referenced by their relevant  
function only.  
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  
©2015 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
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