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ADP5300ACPZ-1-R7 其他数据使用手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
稳压芯片
封装:
LFCSP-10
描述:
直流-直流开关降压稳压器, 可调, 2.15V-6.5V输入, 0.8V-5V输出, 500mA输出, LFCSP-10
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ADP5300ACPZ-1-R7数据手册
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50 mA/500 mA, High Efficiency, Ultralow
Power Step-Down Regulator
Data Sheet
ADP5300
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 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 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Input supply voltage range: 2.15 V to 6.50 V
Operates down to 2.00 V voltage
Ultralow 180 nA quiescent current
Selectable output voltage of 0.8 V to 5.0 V
±1.5% output accuracy over full temperature range in
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
VOUTOK flag monitors the output voltage
Ultrafast stop switching control
100% 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
TYPICAL APPLICATION CIRCUIT
2.2µH
SW
PGND
FB
10µF
10µF
V
OUT
PVIN
VID
V
IN
= 2.15 TO 6.50V
ADP5300
R0
VID0: 1.2V
VID1: 1.5V
VID2: 1.8V
VID3: 2.0V
VID4: 2.1V
VID5: 2.2V
VID6: 2.3V
VID7: 2.4V
VID8: 2.5V
VID9: 2.6V
VID10: 2.7V
VID11: 2.8V
VID12: 2.9V
VID13: 3.0V
VID14: 3.3V
VID15: 3.6V
EPAD
EN
OFF
ON
PWM
SYNC/MODE
HYS
STOP
STOP
SW
VOUTOK
AGND
13366-001
Figure 1.
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 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 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.
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 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.
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.
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