Datasheet > ADP5302

ADP5302

更新时间： 2024-09-16 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		电池监控稳压器
页数	文件大小	规格书
22页	541K
描述
具有电池电压监控器的50 mA/500 mA超低功耗降压稳压器

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ADP5302 数据手册

50 mA/500 mA, Ultralow Power Step-Down

Regulator with Battery Voltage Monitor

Data Sheet

ADP5302

FEATURES

TYPICAL APPLICATION CIRCUIT

Input supply voltage range: 2.15 V to 6.50 V

Operates down to 2.00 V

2.2µH

2.15V TO 6.50V

OUT

PVIN

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

Ultrafast stop switching control

100ꢀ duty cycle operation mode

ADP5302

10µF

(LFCSP-10)

PGND

OFF

PWM

HYS

SYNC/

MODE

STOP

AGND

VINOK

VID

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

EPAD

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

10-lead, 3 mm × 3 mm LFCSP package

Junction temperature: −40°C to +125°C

APPLICATIONS

Energy (gas, water) metering

Portable and battery-powered equipment

Medical applications

Keep-alive power supplies

GENERAL DESCRIPTION

The ADP5302 is a high efficiency, ultralow quiescent current

step-down regulator that draws only 240 nA quiescent current

to regulate the output at no load.

The ADP5302 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 ADP5302 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, dynamic voltage identification (VID)

resistor and a factory fuse. The total solution requires only four

tiny external components.

The ADP5302 includes an extra STOP pin that can temporarily

disable the regulator switching; in this way, a quiet system environ-

ment can be achieved to benefit the noise sensitive circuitry, which

includes data conversion, RF data transmission, and analog sensors.

The ADP5302 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 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.

Other key features in the ADP5302 include separate enabling,

QOD, and safety features, such as overcurrent protection

(OCP), thermal shutdown (TSD), and input undervoltage

lockout (UVLO).

The ADP5302 is available in a 10-lead, 3 mm × 3 mm LFCSP

package rated for the −40°C to +125°C junction temperature range.

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.

Technical Support

www.analog.com

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与ADP5302相关器件

型号	品牌	获取价格	描述	数据表
ADP5303	ADI	获取价格	50 mA/500 mA、集成电池电压监控器的超低功耗降压稳压器
ADP5303ACBZ-2-R7	ADI	获取价格	50 mA/500 mA, Ultralow Power Step-Down Regulator with Battery Voltage Monitor
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ADP5304-EVALZ	ADI	获取价格	Ultralow Power Step-Down Regulator for Energy Harvesting
ADP5310	ADI	获取价格	带有双通道黑色调节器和负载开关的3通道、集成超低功耗解决方案
ADP5310AREZN-255R7	ADI	获取价格	3-Channel, Integrated Ultralow Power Solution with Dual Buck Regulators and Load Switch
ADP5310AREZN-3.3R7	ADI	获取价格	3-Channel, Integrated Ultralow Power Solution with Dual Buck Regulators and Load Switch
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