Datasheet > ADP221

ADP221

更新时间： 2024-11-26 14:57:51

品牌	Logo	应用领域
亚德诺 - ADI		调节器
页数	文件大小	规格书
20页	579K
描述
双通道、200 mA、低噪声、高PSRR电压调节器

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ADP221 数据手册

Dual, 200 mA, Low Noise,

High PSRR Voltage Regulator

Data Sheet

ADP220/ADP221

FEATURES

TYPICAL APPLICATION CIRCUITS

Input voltage range: 2.5 V to 5.5 V

Dual independent 200 mA low dropout voltage regulators

Miniature 6-ball, 1.0 mm × 1.5 mm WLCSP and 6-ball

bumped bare die

= 2.8V

OUT1

EN1

VOUT1

OFF

1µF

Initial accuracy: 1%

= 3.3V

Stable with 1 µF ceramic output capacitors

No noise bypass capacitor required

Two independent logic controlled enables

Overcurrent and thermal protection

Active output pull-down (ADP221)

Key specifications

GND

VIN

1µF

TOP VIEW

(Not to Scale)

= 2.8V

OUT2

EN2

VOUT2

OFF

1µF

High PSRR

76 dB PSRR up to 1 kHz

Figure 1. Typical Application Circuit

70 dB PSRR at 10 kHz

60 dB PSRR at 100 kHz

40 dB PSRR at 1 MHz

VIN

VOUT1

Low output noise

60Ω

27 µV rms typical output noise at V_OUT= 1.2 V

50 µV rms typical output noise at V_OUT= 2.8 V

Excellent transient response

THERMAL

SHUTDOWN

CURRENT

LIMIT

Low dropout voltage: 150 mV @ 200 mA load

60 µA typical ground current at no load, both LDOs enabled

100 µs fast turn-on circuit

EN1

EN2

CONTROL

LOGIC

AND

ADP221

ONLY

REFERENCE

ENABLE

Guaranteed 200 mA output current per regulator

−40°C to +125°C junction temperature

ADP220

CURRENT

LIMIT

APPLICATIONS

GND

60Ω

Mobile phones

VOUT2

Digital cameras and audio devices

Portable and battery-powered equipment

Portable medical devices

Figure 2. Block Diagram of the ADP220/ADP221

Post dc-to-dc regulation

GENERAL DESCRIPTION

The 200 mA dual output ADP220/ADP221 combine high PSRR,

low noise, low quiescent current, and low dropout voltage in a

voltage regulator ideally suited for wireless applications with

demanding performance and board space requirements.

without the need for a noise bypass capacitor. The ADP221 also

includes an active pull-down to quickly discharge output loads.

The ADP220/ADP221 are available in a miniature 6-ball

WLCSP package and 6-ball bumped bare die and is stable with

tiny 1 µF 30% ceramic output capacitors, resulting in the smallest

possible board area for a wide variety of portable power needs.

The low quiescent current, low dropout voltage, and wide input

voltage range of the ADP220/ADP221 extend the battery life of

portable devices. The ADP220/ADP221 maintain power supply

rejection greater than 60 dB for frequencies as high as 100 kHz

while operating with a low headroom voltage. The ADP220

offers much lower noise performance than competing LDOs

The ADP220/ADP221 are available in many output voltage

combinations, ranging from 0.8 V to 3.3 V, and offer overcur-

rent and thermal protection to prevent damage in adverse

conditions.

Rev. H

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the 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ADP221相关器件

型号	品牌	获取价格	描述	数据表
ADP221ACBZ-1818-R7	ADI	获取价格	Dual, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP221ACBZ-2828-R7	ADI	获取价格	IC VREG FIXED POSITIVE LDO REGULATOR, 1 X 1.50 MM, 0.50 MM PITCH, ROHS COMPLIANT, WLCSP-6,
ADP221ACBZ2828-R7	ADI	获取价格	Dual, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP221ACDZ-1818-R7	ADI	获取价格	Dual, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP222	ADI	获取价格	Dual, 300 mA Output, Low Noise
ADP222ACPZ-1218-R7	ADI	获取价格	Dual, 300 mA Output, Low Noise
ADP222ACPZ-1228-R7	ADI	获取价格	Dual, 300 mA Output, Low Noise
ADP222ACPZ-1233R7	ADI	获取价格	IC VREG FIXED POSITIVE REGULATOR, PDSO8, 2.00 X 2.00 MM, ROHS COMPLIANT, LFCSP-8, Fixed Po
ADP222ACPZ-1233-R7	ADI	获取价格	Dual, 300 mA Output, Low Noise
ADP222ACPZ-1528-R7	ADI	获取价格	Dual, 300 mA Output, Low Noise

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