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| 型号： | MAX8720EEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/31页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL VID STP DWN 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，CPU GPU |
| 输入电压： | 2 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 0.28 V ~ 1.85 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 带卷 (TR) |
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19-3319; Rev 2; 9/05
ATION
ILABLE
EVALU
AVA
KIT
Dynamically Adjustable 6-Bit VID
Step-Down Controller
General Description
Features
The MAX8720 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 the high efficiency
needed for leading-edge CPU core power supplies.
Maxim’s proprietary Quick-PWM? quick-response, con-
stant-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 6-bit digital-to-analog converter (DAC) over a 0.275V
to 1.850V range in 25mV steps. The MAX8720 has inde-
pendent four-level logic inputs for setting the suspend
voltage (S0-S1). 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 MAX8720 is synchronized to the slew-rate clock
for improved operation under aggressive power man-
agement of newer chipsets and operating systems that
can make incomplete mode transitions. Remote feed-
back and ground-sense inputs allow easy compensa-
tion for IR drops in PC board traces.
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Quick-PWM Architecture
±1% V OUT Accuracy Over Line and Load
6-Bit On-Board DAC with Input Muxes
Precision-Adjustable V OUT Slew Control
0.275V to 1.850V Output Adjust Range
Remote Feedback and Ground Sense
Supports Voltage-Positioned Applications
2V to 28V Battery Input Range
200kHz/300kHz/550kHz/1000kHz Switching
Frequency
Over/Undervoltage Protection
Drives Large Synchronous-Rectifier FETs
800μA (typ) I CC Supply Current
10μA (typ) Shutdown Supply Current
2V ±0.75% Reference Output
PGOOD Blanking During Transition
Ordering Information
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
PART
MAX8720EEI
MAX8720ETX
TEMP RANGE
-40 ° C to +85 ° C
-40 ° C to +85 ° C
PIN-PACKAGE
28 QSOP
36 Thin QFN 6mm x 6mm
battery) at a higher switching frequency allows the mini-
mum possible physical size.
The MAX8720 is available in a 28-pin QSOP or 36-pin
6mm x 6mm thin QFN package.
Minimal Operating Circuit
+5V BIAS
Applications
V CC
V DD
CPU Core Supply Converters
GPU Core Supply Converters
Notebook and Subnotebook Computers
SHDN
ILIM
AGND
SKIP
SUS
V+
BST
DH
LX
INPUT (V IN )
7V TO 28V
OUTPUT (V OUT )
0.275V TO 1.850V
MAX8720 DL
PGOOD
VID0
VID1
VID2
VID3
VID4
D0
D1
D2
D3
D4
PGND
FB
FBS
GNDS
CC
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
VID5
D5
REF
S0
Pin Configurations appear at end of data sheet.
S1
TIME
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8720ETX | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8720ETX+ | 功能描述:DC/DC 开关控制器 Dyn Adj 6-Bit VID Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8720ETX+T | 功能描述:DC/DC 开关控制器 Dyn Adj 6-Bit VID Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8720ETX-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8720EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX8720 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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