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ADP2102YCPZ-0.8-R7 PDF预览

ADP2102YCPZ-0.8-R7

更新时间： 2024-11-14 15:28:35
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亚德诺 - ADI 开关
页数 文件大小 规格书
25页 799K
描述
SWITCHING REGULATOR, 3000kHz SWITCHING FREQ-MAX, QCC16, 3 X 3 MM, ROHS COMPLIANT, LFCSP-16

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ADP2102YCPZ-0.8-R7 数据手册

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Low Duty Cycle, 600 mA, 3 MHz, Synchronous  
Step-Down DC-to-DC Converter  
ADP2102  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
Input voltage range: 2.7 V to 5.5 V  
600 mA maximum load current  
95% efficiency  
INPUT VOLTAGE  
2.7V TO 5.5V  
OUTPUT VOLTAGE  
1.2V OR 1.375V  
L
V
LX  
IN  
Low duty cycle operation  
1µH  
C
C
OUT  
2.2µF  
IN  
2.2µF  
Only 3 tiny external ceramic components  
3 MHz typical operating frequency  
Fixed output voltage of 1.2 V or 1.375 V  
Adjustable output voltage up to 3.3 V  
0.01 µA shutdown supply current  
Automatic power save mode  
Internal synchronous rectifier  
Internal soft start  
ADP2102  
FORCED  
CCM  
MODE  
EN  
FB/OUT  
GND  
DCM/  
CCM  
ON  
OFF  
Internal compensation  
Enable/shutdown logic input  
Undervoltage lockout  
Figure 1.  
Current limit protection  
Thermal shutdown  
Small 8-lead, 3 mm × 3 mm LFCSP  
The ADP2102 is available in both fixed and adjustable output  
voltage options with a 600 mA maximum output current. The fixed  
output voltage options are 1.2 V and 1.375 V. The adjustable output  
voltage options are available from 1.5 V to 3.3 V. The ADP2102  
requires only three external components and consumes 0.01 µA  
in shutdown mode.  
APPLICATIONS  
USB powered devices  
WLAN and gateways  
Point of loads  
Processor core power from 5 V  
Digital cameras  
PDAs and palmtop computers  
Portable media players, GPS  
The ADP2102 is available in an 8-lead LFCSP and is specified  
for the −40°C to +85°C temperature range.  
100  
V
T
= 1.375V  
OUT  
= 25°C  
V
= 2.7V  
= 3V  
IN  
A
95  
90  
85  
80  
75  
70  
65  
60  
V
IN  
GENERAL DESCRIPTION  
V
= 4.2V  
IN  
The ADP2102 is a synchronous step-down dc-to-dc converter  
that converts a 2.7 V to 5.5 V unregulated input voltage to a lower  
regulated output voltage with up to 95% efficiency and 1%  
accuracy. The low duty cycle capability of the ADP2102 is ideal for  
USB applications or 5 V systems that power up submicron subvolt  
processor cores. Its 3 MHz typical operating frequency and excel-  
lent transient response allow the use of small, low cost 1 µH  
inductors and 2.2 µF ceramic capacitors. At medium-to-high  
load currents, it uses a current mode, pseudofixed frequency pulse-  
width modulation to extend battery life. To ensure the longest  
battery life in portable applications, the ADP2102 has a power save  
mode (PSM) that reduces the switching frequency under light  
load conditions to significantly reduce quiescent current.  
V
= 3.6V  
IN  
10  
100  
LOAD CURRENT (mA)  
1000  
Figure 2. Efficiency vs. Load Current at VOUT = 1.375 V  
Rev. C  
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.  
Tel: 781.329.4700 ©2007–2016 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
 
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