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ADP2302ARDZ-5.0-R7 PDF预览

ADP2302ARDZ-5.0-R7

更新时间: 2024-11-23 06:36:23
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
页数 文件大小 规格书
28页 995K
描述
2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators

ADP2302ARDZ-5.0-R7 数据手册

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2 A/3 A, 20 V, 700 kHz,  
Nonsynchronous Step-Down Regulators  
ADP2302/ADP2303  
TYPICAL APPLICATIONS CIRCUIT  
FEATURES  
V
IN  
Wide input voltage range: 3.0 V to 20 V  
Maximum load current  
2 A for ADP2302  
VIN  
BST  
ADP2302/  
ADP2303  
V
OUT  
3 A for ADP2303  
PGOOD  
SW  
1.ꢀ5 output accuracy over temperature  
Output voltage down to 0.8 V  
700 kHz switching frequency  
Current-mode control architecture  
Automatic PFM/PWM mode  
Precision enable pin with hysteresis  
Integrated high-side MOSFET  
Integrated bootstrap diode  
Internal compensation and soft start  
Power-good output  
ON  
OFF  
EN  
FB  
GND  
Figure 1. Typical Application Circuit  
100  
90  
80  
70  
60  
50  
40  
Undervoltage lockout (UVLO)  
Overcurrent protection (OCP)  
Thermal shutdown (TSD)  
8-lead SOIC package with exposed paddle  
APPLICATIONS  
Intermediate power rail conversion  
DC-to-DC point of load applications  
Communications and networking  
Industrial and instrumentation  
Healthcare and medical  
V
V
= 3.3V  
= 5.0V  
OUT  
OUT  
INDUCTOR: VLF10040T  
DIODE: SSB43L  
-
4R7N5R4  
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
Consumer  
OUTPUT CURRENT (A)  
Figure 2. ADP2303 Efficiency vs. Output Current at VIN = 12 V  
GENERAL DESCRIPTION  
The ADP2302/ADP2303 are fixed frequency, current-mode  
control, step-down, dc-to-dc regulators with an integrated  
power MOSFET. The ADP2302/ADP2303 can run from an  
input voltage of 3.0 V to 20 V, which makes them suitable for a  
wide range of applications. The output voltage of the ADP2302/  
ADP2303 can be down to 0.8 V for the adjustable version, while  
the fixed output version is available in preset output voltage  
options of 5.0 V, 3.3 V, and 2.5 V. The 700 kHz operating  
frequency allows small inductor and ceramic capacitors to be  
used, providing a compact solution. Current mode control  
provides fast and stable line and load transient performance.  
The ADP2302/ADP2303 have integrated soft start circuitry to  
prevent a large inrush current at power-up. The power-good  
signal can be used to sequence devices that have an enable input.  
The precision enable threshold voltage allows the part to be  
easily sequenced from other input/output supplies. Other key  
features include undervoltage lockout (UVLO), overvoltage  
protection (OVP), thermal shutdown (TSD), and overcurrent  
protection (OCP).  
The ADP2302/ADP2303 devices are available in the 8-lead,  
SOIC package with exposed paddle and are rated for the −40oC  
to +125oC junction temperature range.  
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.  
 

ADP2302ARDZ-5.0-R7 替代型号

型号 品牌 替代类型 描述 数据表
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2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators

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