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ADP3026 PDF预览

ADP3026

更新时间: 2024-09-12 22:39:03
品牌 Logo 应用领域
亚德诺 - ADI 电脑控制器
页数 文件大小 规格书
19页 735K
描述
High-Efficiency Notebook Computer Power Supply Controller

ADP3026 数据手册

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PRELIMINARY TECHNICAL DATA  
High-Efficiency Notebook Computer  
a
Power Supply Controller  
ADP3026  
Preliminary Technical Data  
GENERAL DESCRIPTION  
FEATURES  
The ADP3026 is a highly efficient dual synchronous buck  
switching regulator controller optimized for converting the  
battery or adapter input into the system supply voltages re-  
quired in notebook computers. The ADP3026 uses a  
dual-mode PWM/Power Saving Mode architecture to maintain  
efficiency over a wide load range.  
Wide Input Voltage Range: 6.5 V to 25 V  
High Conversion Efficiency > 96%  
Integrated Current Sense—No External Resistor Re-  
quired  
Low Shutdown Current: 14 A (Typical)  
Voltage Mode PWM with Input Feed Forward for Fast  
Line Transient Response  
Dual Synchronous Buck Controllers with PWM/  
Power-Saving Mode Operation  
Built-In Gate Drive Boost Circuit for Driving Exter-  
nal  
The ADP3026 provides accurate and reliable short circuit  
protection using an internal current sense circuit, which re-  
duces cost and increases overall efficiency. Other protection  
features include programmable soft-start, UVLO, and inte-  
grated output undervoltage/overvoltage protection.  
N-Channel MOSFETs  
Two Fixed Output Voltages: 3.3 V, 5 V  
PWM Frequency: 300 kHz  
Extensive Circuit Protection Functions  
28-Lead TSSOP Package  
APPLICATIONS  
Notebook Computers and PDAs  
Portable Instruments  
General Purpose DC-DC Converters  
FUNCTIONAL BLOCK DIAGRAM  
V
IN  
6.5V TO 25V  
ADP3026  
5V LINEAR  
REF  
Q1  
Q2  
Q3  
L2  
L1  
5V  
3.3V  
SMPS  
3.3V  
5V  
SMPS  
Q4  
SS3  
SS5  
PWRGD  
POWER-ON  
RESET  
REV. PrB  
3/12/02  
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  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 2002  

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