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ADP2120ACPZ-3.3-R7 PDF预览

ADP2120ACPZ-3.3-R7

更新时间： 2024-11-25 11:50:55
品牌 Logo 应用领域
亚德诺 - ADI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管PC
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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ADP2120ACPZ-3.3-R7 数据手册

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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  
C1  
0.1µF  
V
5V  
IN  
ADP2120: 1.25 A  
C
R1  
IN  
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 VIN  
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  
1
2
3
4
5
10  
VIN  
EN  
9
PVIN SYNC/MODE  
R2  
10kΩ  
V
OUT  
3.3V  
8
SW  
PGOOD  
TRK  
C
L
OUT  
1.5µH  
22µF  
X5R  
6.3V  
7
PGND  
GND  
R
TOP  
10kΩ  
6
FB  
R
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.  
V
V
= 5V  
IN  
= 1.8V  
OUT  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
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 (VIN) 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  
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  
©2010 Analog Devices, Inc. All rights reserved.  
 
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ADP2120ACPZ-3.3-R7 替代型号

型号 品牌 替代类型 描述 数据表
ADP2119ACPZ-3.3-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2120ACPZ-1.8-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2120ACPZ-1.5-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

与ADP2120ACPZ-3.3-R7相关器件

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ADP2120ACPZ-R7 ADI

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ADP2121 ADI

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 		600 mA, 6 MHz, Synchronous Step-Down DC-to-DC Converter
ADP2121ACBZ-1.82R7 ROCHESTER

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 		1.222 A SWITCHING REGULATOR, 6640 kHz SWITCHING FREQ-MAX, PBGA6, 1.17 MM HEIGHT, 0.40 MM P
ADP2121ACBZ-1.82R7 ADI

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 		600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
ADP2121ACBZ-1.85R7 ROCHESTER

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 		1.222 A SWITCHING REGULATOR, 6640 kHz SWITCHING FREQ-MAX, PBGA6, 1.17 MM HEIGHT, 0.40 MM P
ADP2121ACBZ-1.85R7 ADI

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 		600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
ADP2121ACBZ-1.8-R7 ADI

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 		600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
ADP2121ACBZ-1875R7 ROCHESTER

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 		1.222 A SWITCHING REGULATOR, 6640 kHz SWITCHING FREQ-MAX, PBGA6, 1.17 MM HEIGHT, 0.40 MM P
ADP2121ACBZ-1875R7 ADI

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 		600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
ADP2125BCDZ-1.26R7 ROCHESTER

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