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C3225X5R0J476M PDF预览

C3225X5R0J476M

更新时间： 2024-11-14 07:18:43
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亚德诺 - ADI /
页数 文件大小 规格书
20页 1006K
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6.5 V, 4 A, High Efficiency

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6.5 V, 4 A, High Efficiency,  
Step-Down DC-to-DC Regulator  
ADP2164  
Data Sheet  
FEATURES  
TYPICAL APPLICATIONS CIRCUIT  
R1  
4 A continuous output current  
43 mΩ and 29 mΩ integrated FET  
1.ꢀ5 output accuracy  
Input voltage range: 2.7 V to 6.ꢀ V  
Output voltage: 0.6 V to VIN  
V
IN  
C
IN  
C1  
R2  
PGOOD VIN  
PVIN  
SW  
L
V
EN  
OUT  
C
OUT  
Switching frequency  
SYNC  
FB  
ADP2164  
Fixed frequency: 600 kHz or 1.2 MHz  
Adjustable frequency: ꢀ00 kHz to 1.4 MHz  
Synchronizable from ꢀ00 kHz to 1.4 MHz  
Selectable synchronize phase shift: 0° or 180°  
Current mode architecture  
TRK  
RT  
PGND  
GND  
R
T
Figure 1.  
Precision enable input  
Power-good output  
Voltage tracking input  
Integrated soft start  
Internal compensation  
Starts up into a precharged output  
UVLO, OVP, OCP, and thermal shutdown  
Available in 16-lead, 4 mm × 4 mm LFCSP package  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
APPLICATIONS  
Point-of-load conversion  
Communications and networking equipment  
Industrial and instrumentation  
Consumer electronics  
V
= 5V  
= 600kHz  
V
V
= 1.2V  
= 3.3V  
IN  
OUT  
OUT  
f
S
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
OUTPUT CURRENT (A)  
Figure 2. Efficiency vs. Output Current  
GENERAL DESCRIPTION  
The ADP2164 is a 4 A, synchronous, step-down dc-to-dc regulator  
in a compact 4 mm × 4 mm LFCSP package. The regulator uses a  
current mode, constant frequency pulse-width modulation (PWM)  
control scheme for excellent stability and transient response.  
The ADP2164 integrates a pair of low on-resistance P-channel  
and N-channel internal MOSFETs to maximize efficiency and  
minimize external component count. The 100% duty cycle  
operation allows low dropout voltage at 4 A output current.  
The input voltage range of the ADP2164 is 2.7 V to 6.5 V. The  
output voltage of the ADP2164 is adjustable from 0.6 V to the  
input voltage (VIN). The ADP2164 is also available in six preset  
output voltage options: 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V.  
The high, 1.2 MHz PWM switching frequency allows the use of  
small external components, and the SYNC input enables multiple  
ICs to synchronize out of phase to reduce ripple and eliminate  
beat frequencies.  
Other key features of the ADP2164 include undervoltage lockout  
(UVLO), integrated soft start to limit inrush current at startup,  
overvoltage protection (OVP), overcurrent protection (OCP),  
and thermal shutdown.  
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  
©2011 Analog Devices, Inc. All rights reserved.  
 
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