Datasheet > ADP2119

ADP2119

更新时间： 2024-11-25 11:48:51

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
24页	1112K
描述
2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

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中文翻译

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数据手册

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ADP2119 数据手册

2 A/1.25 A, 1.2 MHz, Synchronous,

Step-Down DC-to-DC Regulators

ADP2119/ADP2120

FEATURES

Continuous output current

ADP2119: 2 A

TYPICAL APPLICATION CIRCUIT

0.1µF

ADP2120: 1.25 A

145 mΩ and 70 mΩ integrated MOSFETs

Input voltage range from 2.3 V to 5.5 V

Output voltage from 0.6 V to V_IN

1.5ꢀ output accuracy

1.2 MHz fixed switching frequency

Synchronizable between 1 MHz and 2 MHz

Selectable PWM or PFM mode operation

Current mode architecture

22µF

X5R

6.3V

10Ω

ADP2119/ADP2120

VIN

PVIN SYNC/MODE

10kΩ

OUT

3.3V

PGOOD

TRK

OUT

1.5µH

22µF

X5R

6.3V

PGND

GND

TOP

10kΩ

BOT

Precision threshold enable input

Power-good flag

2.21kΩ

Voltage tracking

Integrated soft start

Figure 1.

Internal compensation

Startup with precharged output

UVLO, OVP, OCP, and thermal shutdown

10-lead, 3 mm × 3 mm LFCSP_WD package

APPLICATIONS

Point of load conversion

Communications and networking equipment

Industrial and instrumentation

Consumer electronics

Medical applications

GENERAL DESCRIPTION

100

The ADP2119/ADP2120 are low quiescent current, synchronous,

step-down dc-to-dc regulators in a compact 3 mm × 3 mm

LFCSP_WD package. Both devices use a current mode, constant

frequency pulse-width modulation (PWM) control scheme for

excellent stability and transient response. Under light load conditions,

they can be configured to operate in a pulse frequency modulation

(PFM) mode, which reduces switching frequency to save power.

= 5V

= 1.8V

OUT

PFM

The ADP2119/ADP2120 support input voltages from 2.3 V to

5.5 V. The output voltage can be adjusted from 0.6 V up to the

input voltage (V_IN) for the adjustable version, whereas the fixed

output version is available in preset output voltage options of 3.3 V,

2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V. The ADP2119/ADP2120 require

minimal external parts and provide a high efficiency solution with

their integrated power switches, synchronous rectifiers, and internal

compensation. Each IC draws less than 2 μA current from the input

source when it is disabled. Other key features include undervoltage

lockout (UVLO), integrated soft start to limit inrush current at

startup, overvoltage protection (OVP), overcurrent protection

(OCP), and thermal shutdown (TSD).

FPWM

0.01

0.1

OUTPUT CURRENT (A)

Figure 2. ADP2119 Efficiency vs. Output Current

Rev. 0

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

Fax: 781.461.3113

www.analog.com

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与ADP2119相关器件

型号	品牌	获取价格	描述	数据表
ADP2119ACPZ-1.0-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-1.2-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-1.5-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-1.8-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-2.5-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-3.3-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2120	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2120ACPZ-1.0-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2120ACPZ-1.2-R7	ADI	获取价格	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

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