參數(shù)資料
型號(hào)： MAX1718BEEI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Notebook CPU Step-Down Controller for Intel Mobile Voltage Positioning IMVP-II
中文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.150 INCH, 0.025 INCH PITCH, MO-137AD, QSOP-28
文件頁(yè)數(shù)： 1/35頁(yè)
文件大?。?/td> 700K
代理商： MAX1718BEEI
M
Notebook CPU Step-Down Controller for Intel
Mobile Voltage Positioning (IMVP-II)
________________________________________________________________
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.
1
19-1960; Rev 3; 8/02
Ordering Information
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
Patent pending.
Quick-PWM is a trademark of Maxim Integrated Products.
IMVP-II is a trademark of Intel Corp.
V
VCC
5V INPUT
BATT 2V TO 28V
POWER-GOOD
OUTPUT
SKP/SDN
ILIM
OUTPUT
0.6V TO 1.75V
D0
D1
D2
D3
D4
SHUTDOWN
DL
LX
V+
DH
BST
GND
FB
NEG
POS
VGATE
OVP
V
DD
S1
S0
SUS
MUX CONTROL
SUSPEND
INPUT
DECODER
ZMODE
TIME
CC
REF
TON
DUAL MODE VID
MUX INPUTS
MAX1718
Minimal Operating Circuit
General Description
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.
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.
Precision slew-rate control
provides “just-in-time” arrival
at the new DAC setting, minimizing surge currents to
and from the battery.
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.
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.
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.
The MAX1718 is available in a 28-pin QSOP package.
Applications
IMVP-II Notebook Computers
2-Cell to 4-Cell Li+ Battery to CPU Core Supply
Converters
5V to CPU Core Supply Converters
Features
o
Quick-PWM Architecture
o
±1% V
OUT
Accuracy Over Line and Load
o
5-Bit On-Board DAC with Input Muxes
o
Precision-Adjustable V
OUT
Slew Control
o
0.6V to 1.75V Output Adjust Range
o
Precision Offset Control
o
Supports Voltage-Positioned Applications
o
2V to 28V Battery Input Range
o
Requires a Separate 5V Bias Supply
o
200/300/550/1000kHz Switching Frequency
o
Over/Undervoltage Protection
o
Drives Large Synchronous-Rectifier FETs
o
700μA (typ) I
CC
Supply Current
o
2μA (typ) Shutdown Supply Current
o
2V ±1% Reference Output
o
VGATE Blanking During Transition
o
Small 28-Pin QSOP Package
Pin Configuration appears at end of data sheet.
PART
PIN-PACKAGE
28 QSOP
28 QSOP
MAX1718EEI
MAX1718BEEI
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1718BEEI+ 制造商:Maxim Integrated Products 功能描述:NOTEBOOK CPU STEP-DOWN CONTROLLER FOR INTEL MOBILE VOLTAGE - Rail/Tube
MAX1718BEEI-TG068 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1718EEI 制造商:Maxim Integrated Products 功能描述:NOTEBOOK CPU STEP-DOWN CONTROLLER FOR INTEL M - Bulk
MAX1718EEI+ 制造商:Maxim Integrated Products 功能描述:LDO CNTRLR STDN 0.6V TO 1.75V 28QSOP - Rail/Tube
MAX1718EEI+T 制造商:Maxim Integrated Products 功能描述:LDO CNTRLR STDN 0.6V TO 1.75V 28QSOP - Tape and Reel
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