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| 型号： | MAX1813EEI |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | Dynamically-Adjustable, Synchronous Step-Down Controller with Integrated Voltage Positioning |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, QSOP-28 |
| 文件页数： | 1/38页 |
| 文件大小： | 738K |
| 代理商： | MAX1813EEI |
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General Description
The MAX1813 step-down controller is intended for core
CPU DC-DC converters in notebook computers. The
controller features a dynamically adjustable output (5-
bit DAC), ultra-fast transient response, high DC accura-
cy, and high efficiency necessary 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 switch-
ing frequency.
The MAX1813 is designed specifically for CPU core
applications requiring a voltage-positioned supply. The
voltage-positioning input (VPCS), combined with a
high-DC-accuracy control loop, is used to implement a
power supply that modifies its output set point in
response to the load current. This arrangement
decreases full-load power dissipation and reduces the
required number of output capacitors.
The output voltage can be dynamically adjusted
through the 5-bit digital-to-analog converter (DAC)
inputs over a 0.600V to 2V range. The MAX1813
includes an internal multiplexer that selects between
three different DAC code settings. The first two inputs
are controlled by five digital input pins (D0–D4). The
third input is used for the suspend mode and controlled
by two 4-level input pins (S0, S1). Output voltage transi-
tions are accomplished with a proprietary precision
slew-rate control that minimizes surge currents to and
from the battery while guaranteeing “just-in-time” arrival
at the new DAC setting.
The MAX1813’s 28V input range enables single-stage
buck conversion from high-voltage batteries for the
maximum possible efficiency. Alternatively, the con-
troller’s high-frequency capability combined with two-
stage conversion (stepping down the +5V system
supply instead of the battery) allows the smallest possi-
ble physical size.
The MAX1813 is available in a 28-pin QSOP package.
Applications
Notebook Computers
(Intel IMVP–
II
/Coppermine
)
Docking Stations
CPU Core Supply
Single-Stage (BATT to V
CORE
) Converters
Two-Stage (+5V to V
CORE
) Converters
Features
o
High-Efficiency Voltage Positioning
o
Quick-PWM Architecture
o
±1% V
OUT
Accuracy Over Line
o
Adjustable Output Slew Rate
o
0.600V to 2V Adjustable Output Range (5-Bit DAC)
o
2V to 28V Battery Input Range
o
200/300/600/1000kHz Switching Frequency
o
Output Undervoltage and Overvoltage Protection
o
Drives Large Synchronous-Rectifier MOSFETs
o
±20% Accurate Current-Limit
o
10μA Shutdown Supply Current
o
2V ±1% Reference Output
o
Power-Good (PGOOD) Indicator
o
Small 28-Pin QSOP Package
M
Dynamically-Adjustable, Synchronous Step-Down
Controller with Integrated Voltage Positioning
________________________________________________________________
Maxim Integrated Products
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
19-2010; Rev 0; 4/01
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
28 QSOP
MAX1813EEI
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
Coppermine and IMVP-
ΙΙ
are trademarks of Intel Corp.
Typical Operating Circuit appears at end of data sheet.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DH
LX
BST
D0
D1
D2
PGND
D3
D4
CODE
ZMODE
SUS
V
DD
DL
GND
PGOOD
ILIM
REF
TON
V
CC
S1
S0
CC
FB
TIME
SKP/SDN
VPCS
V+
QSOP
TOP VIEW
MAX1813
Pin Configuration
相关PDF资料 |
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| MAX182AEPI | Calivrated 4-Channel 12-Bit ADC with T/H and Refernce |
| MAX182BEPI | Calivrated 4-Channel 12-Bit ADC with T/H and Refernce |
| MAX182ACPI | Replaced by TMS320BC52 : Digital Signal Processors 100-LQFP -40 to 85 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1813EEI+ | 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 |
| MAX1813EEI+T | 功能描述:DC/DC 开关控制器 Dynamically Adjustable Synchronous Step-Down Controller w/Integrated Voltage Positioning 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 |
| MAX1813EEI-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 |
| MAX1813EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX1813 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 |
| MAX1813XR46+ | 制造商:Maxim Integrated Products 功能描述: |
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