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MAX1718

更新时间： 2024-11-26 22:57:59
品牌 Logo 应用领域
美信 - MAXIM 电脑控制器
页数 文件大小 规格书
35页 694K
描述
Notebook CPU Step-Down Controller for Intel Mobile Voltage Positioning IMVP-II

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MAX1718 数据手册

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19-1960; Rev 3; 8/02  
Notebook CPU Step-Down Controller for Intel  
-
Mobile Voltage Positioning (IMVP II)  
General Description  
Features  
o Quick-PWM Architecture  
1ꢀ ꢁ Accuracy Over Line and Load  
The MAX1718 step-down controller is intended for core  
CPU DC-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.  
o
OUT  
o 5-Bit On-Board DAC with Input Muxes  
o Precision-Adjustable ꢁ Slew Control  
OUT  
o 0.6ꢁ to 1.75ꢁ Output Adjust Range  
o Precision Offset Control  
o Supports ꢁoltage-Positioned Applications  
o 2ꢁ to 28ꢁ Battery Input Range  
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 MAX1718 has an internal multiplexer  
that accepts three unique 5-bit VID DAC codes corre-  
sponding to Performance, Battery, and Suspend modes.  
o Requires a Separate 5ꢁ Bias Supply  
o 200/300/550/1000kHz Switching Frequency  
o Over/Undervoltage Protection  
o Drives Large Synchronous-Rectifier FETs  
†
Precision slew-rate control provides “just-in-time” arrival  
o 700µA (typ) I  
Supply Current  
CC  
at the new DAC setting, minimizing surge currents to  
and from the battery.  
o 2µA (typ) Shutdown Supply Current  
o 2ꢁ 1ꢀ Reference Output  
The internal DAC of the MAX1718B is synchronized to  
the slew-rate clock for improved operation under  
aggressive power management of newer chipsets and  
operating systems that can make incomplete mode tran-  
sitions.  
o ꢁGATE Blanking During Transition  
o Small 28-Pin QSOP Package  
Ordering Information  
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.  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
MAX1718EEI  
MAX1718BEEI  
28 QSOP  
28 QSOP  
Minimal Operating Circuit  
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 bat-  
tery) at a higher switching frequency allows the mini-  
mum possible physical size.  
5V INPUT  
BATT 2V TO 28V  
V
V
CC  
DD  
V+  
SKP/SDN  
SHUTDOWN  
ILIM  
BST  
DH  
OUTPUT  
MAX1718  
0.6V TO 1.75V  
The MAX1718 is available in a 28-pin QSOP package.  
D0  
D1  
D2  
D3  
D4  
LX  
DUAL MODE VID  
MUX INPUTS  
Applications  
IMVP-II™ Notebook Computers  
2-Cell to 4-Cell Li+ Battery to CPU Core Supply  
Converters  
DL  
GND  
ZMODE  
SUS  
MUX CONTROL  
SUSPEND  
INPUT  
DECODER  
S0  
S1  
FB  
NEG  
POS  
5V to CPU Core Supply Converters  
TIME  
CC  
Pin Configuration appears at end of data sheet.  
V
CC  
REF  
POWER-GOOD  
OUTPUT  
†
VGATE  
OVP  
Patent pending.  
TON  
Quick-PWM is a trademark of Maxim Integrated Products.  
IMVP-II is a trademark of Intel Corp.  
________________________________________________________________ Maxim Integrated Products  
1
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...35

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与MAX1718相关器件

型号 品牌 获取价格 描述 数据表
MAX1718BEEI MAXIM

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 		Notebook CPU Step-Down Controller for Intel Mobile Voltage Positioning IMVP-II
MAX1718BEEI+ MAXIM

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 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1718BEEI+T MAXIM

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 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1718BEEIB+ MAXIM

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 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1718BEEI-T MAXIM

获取价格

 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1718EEI MAXIM

获取价格

 		Notebook CPU Step-Down Controller for Intel Mobile Voltage Positioning IMVP-II
MAX1718EEI+ MAXIM

获取价格

 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, CMOS, PDSO28, 0.150 INCH,
MAX1718EEI+T MAXIM

获取价格

 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, CMOS, PDSO28, 0.150 INCH,
MAX1718EEI-C71059 ROCHESTER

获取价格

 		SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO
MAX1718EEI-T MAXIM

获取价格

 		Switching Controller, Current-mode, 1000kHz Switching Freq-Max, CMOS, PDSO28, 0.150 INCH,

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