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ADP2380AREZ

更新时间: 2024-11-23 12:26:03
品牌 Logo 应用领域
亚德诺 - ADI 驱动器稳压器
页数 文件大小 规格书
28页 931K
描述
20 V, 4 A Synchronous Step-Down Regulator with Low-Side Driver

ADP2380AREZ 数据手册

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20 V, 4 A Synchronous Step-Down  
Regulator with Low-Side Driver  
Data Sheet  
ADP2380  
FEATURES  
TYPICAL APPLICATIONS CIRCUIT  
V
Input voltage: 4.5 V to 20 V  
IN  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
PVIN  
PVIN  
BST  
Integrated 44 mΩ high-side MOSFET  
0.6 V 1% reference voltage over temperature  
Continuous output current: 4 A  
Programmable switching frequency: 250 kHz to 1.4 MHz  
Synchronizes to external clock: 250 kHz to 1.4 MHz  
180° out-of-phase synchronization  
Programmable UVLO  
L
C
V
BST  
OUT  
C
IN  
SW  
SW  
C
OUT  
UVLO ADP2380  
PGOOD  
FET  
LD  
C
RT  
VREG  
PGND  
GND  
VREG  
R
OSC  
11  
10  
9
SYNC  
EN/SS  
COMP  
R
R
TOP  
C
SS  
Power-good output  
FB  
External compensation  
BOT  
C
C_EA  
R
Internal soft start with external adjustable option  
Startup into a precharged output  
Supported by ADIsimPower design tool  
C_EA  
C
CP_EA  
Figure 1.  
APPLICATIONS  
Communications infrastructure  
Networking and servers  
Industrial and instrumentation  
Healthcare and medical  
Intermediate power rail conversion  
DC-to-dc point of load application  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
V
V
V
= 1.2V  
= 3.3V  
= 5V  
OUT  
OUT  
OUT  
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, VIN = 12 V, fSW = 250 kHz  
GENERAL DESCRIPTION  
The ADP2380 is a current mode control, synchronous, step-down,  
dc-to-dc regulator. It integrates a 44 mΩ high-side power MOSFET  
and a low-side driver to provide a high efficiency solution. The  
ADP2380 runs from an input voltage of 4.5 V to 20 V and can  
deliver 4 A of output current. The output voltage can be adjusted  
to 0.6 V to 90% of the input voltage. The switching frequency of  
the ADP2380 can be programmed from 250 kHz to 1.4 MHz or  
fixed at 290 kHz or 540 kHz. The synchronization function allows  
the switching frequency to be synchronized to an external clock  
to minimize system noise.  
External compensation and an adjustable soft start provide  
design flexibility. The power-good output provides simple and  
reliable power sequencing. Additional features include  
programmable undervoltage lockout (UVLO), overvoltage  
protection (OVP), overcurrent protection (OCP), and thermal  
shutdown (TSD).  
The ADP2380 operates over the −40°C to +125°C junction  
temperature range and is available in a 16-lead TSSOP_EP  
package.  
Rev. 0  
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  
Technical Support  
©2012 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 

ADP2380AREZ 替代型号

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