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MAX1718TEEI

更新时间： 2024-11-29 03:28:23
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关式稳压器或控制器电源电路开关式控制器电脑
页数 文件大小 规格书
34页 658K
描述
Notebook CPU Step-Down Controller

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中文翻译

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MAX1718TEEI 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：SOIC
包装说明：0.150 INCH, QSOP-28针数：28
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.77
Is Samacsys：NBase Number Matches：1

MAX1718TEEI 数据手册

 浏览型号MAX1718TEEI的Datasheet PDF文件第2页浏览型号MAX1718TEEI的Datasheet PDF文件第3页浏览型号MAX1718TEEI的Datasheet PDF文件第4页浏览型号MAX1718TEEI的Datasheet PDF文件第5页浏览型号MAX1718TEEI的Datasheet PDF文件第6页浏览型号MAX1718TEEI的Datasheet PDF文件第7页 
19-2682; Rev 0; 10/02  
Notebook CPU Step-Down Controller  
General Description  
Features  
ꢀ Quick-PWM Architecture  
ꢀ ±±1 ꢀ Accuracy Over Line and Load  
The MAX1718T step-down controller is intended for core  
CPU DC-to-DC converters in notebook computers. It fea-  
tures a dynamically adjustable output, ultra-fast transient  
response, high-DC accuracy, and high efficiency need-  
ed for leading-edge CPU core power supplies. Maxim’s  
proprietary Quick-PWM™ quick-response, constant-on-  
time PWM control scheme handles wide input/output  
voltage ratios with ease and provides 100ns “instant-on”  
response to load transients while maintaining a relatively  
constant switching frequency.  
OUT  
ꢀ 5-Bit On-Board DAC with Input Muxes  
ꢀ Precision-Adjustable ꢀ Slew Control  
OUT  
ꢀ 0.6ꢀ to ±.75ꢀ Output Adjust Range  
ꢀ Precision Offset Control  
ꢀ Supports ꢀoltage-Positioned Applications  
ꢀ 2ꢀ to 28ꢀ Battery Input Range  
ꢀ Requires a Separate 5ꢀ Bias Supply  
The output voltage can be dynamically adjusted  
through the 5-bit digital-to-analog converter (DAC) over  
a 0.6V to 1.75V range. The MAX1718T has an internal  
multiplexer that accepts three unique 5-bit VID DAC  
codes corresponding to performance, battery, and sus-  
ꢀ 200kHz/300kHz/550kHz/±000kHz Switching  
Frequency  
ꢀ Overvoltage/Undervoltage Protection  
ꢀ Drives Large Synchronous-Rectifier FETs  
†
ꢀ 700µA (typ) I  
Supply Current  
pend modes. Precision slew-rate control provides  
CC  
“just-in-time” arrival at the new DAC setting, minimizing  
surge currents to and from the battery.  
ꢀ 2µA (typ) Shutdown Supply Current  
ꢀ 2ꢀ ±±1 Reference Output  
A pair of complementary offset control inputs allows  
easy compensation for IR drops in PC board traces or  
creation of a voltage-positioned power supply. Voltage  
positioning modifies the load-transient response to  
reduce output capacitor requirements and total system  
power dissipation.  
ꢀ ꢀGATE Blanking During Transition  
ꢀ Small 28-Pin QSOP Package  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX1718TEEI  
-40°C to +85°C  
28 QSOP  
Single-stage buck conversion allows these devices to  
directly step down high-voltage batteries for the highest  
possible efficiency. Alternatively, two-stage conversion  
(stepping down the 5V system supply instead of the  
battery) at a higher switching frequency allows the mini-  
mum possible physical size.  
Minimal Operating Circuit  
5V INPUT  
BATT 2V TO 28V  
V
V
DD  
CC  
SKP/SDN  
V+  
The MAX1718T is available in a 28-pin QSOP package.  
SHUTDOWN  
ILIM  
BST  
DH  
OUTPUT  
0.6V TO 1.75V  
Applications  
2-Cell to 4-Cell Li+ Battery to CPU Core Supply  
Converters  
MAX1718T  
D0  
D1  
D2  
D3  
D4  
LX  
DUAL MODE™ VID  
MUX INPUTS  
DL  
5V to CPU Core Supply Converters  
GND  
ZMODE  
SUS  
MUX CONTROL  
SUSPEND  
INPUT  
DECODER  
S0  
S1  
FB  
NEG  
POS  
Pin Configuration appears at end of data sheet.  
TIME  
CC  
VCC  
†
Patent pending.  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
REF  
POWER-GOOD  
OUTPUT  
VGATE  
OVP  
TON  
Dual Mode is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
±
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...34

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