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ADP2166

更新时间： 2024-11-26 02:47:11
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亚德诺 - ADI /
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23页 670K
描述
5.5 V, 5 A/6 A, High Efficiency, Step-Down DC-to-DC Regulators with Output Tracking

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ADP2166 数据手册

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5.5 V, 5 A/6 A, High Efficiency, Step-Down  
DC-to-DC Regulators with Output Tracking  
Data Sheet  
ADP2165/ADP2166  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
Continuous output current  
ADP2165: 5 A  
ADP2166: 6 A  
Integrated MOSFET  
ADP2165/  
ADP2166  
PVIN  
AVIN  
EN  
BST  
SW  
V
PVIN  
C
BST  
L1  
R
C
IN  
V
OUT  
C
OUT  
PGOOD  
SYNC  
RT  
High-side on resistance: 19 mΩ  
Low-side on resistance: 15 mΩ  
Reference voltage: 0.6 V 1% over temperature range  
Input voltage range: 2.7 V to 5.5 V  
Current mode architecture  
TOP  
R
RT  
FB  
COMP  
TRK  
C
VREG  
C
R
CP  
C
R
BOT  
VREG  
SS  
C
C
GND PGND  
C
SS  
Switching frequency  
Fixed frequency: 620 kHz or 1.2 MHz  
Adjustable frequency: 250 kHz to 1.4 MHz  
Synchronizes to external clock: 250 kHz to 1.4 MHz  
Selectable synchronize phase shift: in phase or out of phase  
External compensation  
Figure 1.  
The ADP2165/ADP2166 are designed to be extremely flexible  
with the addition of a minimal amount of external components  
to program soft start and control loop compensation.  
Programmable soft start  
The ADP2165/ADP2166 are supplied from an input voltage of  
2.7 V to 5.5 V. Output voltage options include 3.3 V, 2.5 V, 1.8 V,  
1.5 V, 1.2 V, or 1.0 V fixed outputs and adjustable options capable  
of supporting an output voltage range from 0.6 V to 90% of the  
input voltage. Protection features include undervoltage lockout  
(UVLO), overvoltage protection (OVP), overcurrent protection  
(OCP), and thermal shutdown (TSD) for robust performance.  
Startup into a precharged output  
Voltage tracking input  
Power-good output and precision enable input  
Accurate current limit  
Available in 24-lead, 4 mm × 4 mm LFCSP package  
Supported by ADIsimPower™ design tool  
APPLICATIONS  
The ADP2165/ADP2166 operate over the −40°C to +125°C  
junction temperature range and are available in a 24-lead  
LFCSP package.  
Point of load regulation  
Communications and networking  
High end consumer  
Industrial, instrumentation, and healthcare  
100  
V
= 3.3V  
PVIN  
GENERAL DESCRIPTION  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
The ADP2165/ADP2166 are high efficiency, current mode  
control, step-down dc-to-dc regulators with an integrated 19 mΩ  
high-side FET and a 15 mΩ synchronous rectified FET. The  
ADP2165/ADP2166 combine a small size, 4 mm × 4 mm LFCSP  
package with an accurate current limit, resulting in a smaller  
inductor size and a high power density, point of load solution.  
V
= 5V  
PVIN  
Key features include precision enable, power-good monitor,  
and output voltage tracking to facilitate robust sequencing.  
The switching frequency can be programmed from 250 kHz  
to 1.4 MHz, or it can be fixed at 620 kHz or 1.2 MHz. The  
synchronization function allows the switching frequency to  
synchronize to an external clock, minimizing the  
V
= 1.8V  
OUT  
fSW = 600kHz  
0
1
2
3
4
5 6  
OUTPUT CURRENT (A)  
Figure 2. Efficiency vs. Output Current  
electromagnetic interference (EMI) of the system.  
Rev. B  
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 ©2014–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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