Datasheet > MAX1813

MAX1813

更新时间： 2024-09-14 14:57:27

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
38页	738K
描述
动态可调、同步降压型控制器，集成电压定位电路

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MAX1813 数据手册

19-2010; Rev 0; 4/01

Dynamically-Adjustable, Synchronous Step-Down

Controller with Integrated Voltage Positioning

General Description

Features

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.

ꢀ High-Efficiency Voltage Positioning

ꢀ Quick-PWM Architecture

ꢀ ±±1 V

Accuracy Over Line

OUT

ꢀ Adjustable Output Slew Rate

ꢀ 0.600V to 2V Adjustable Output Range (5-Bit DAC)

ꢀ 2V to 28V Battery Input Range

ꢀ 200/300/600/±000kHz Switching Frequency

ꢀ Output Undervoltage and Overvoltage Protection

ꢀ Drives Large Synchronous-Rectifier MOSFETs

ꢀ ±201 Accurate Current-Liꢀit

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.

ꢀ ±0µA Shutdown Supply Current

ꢀ 2V ±±1 Reference Output

ꢀ Power-Good (PGOOD) Indicator

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.

ꢀ Sꢀall 28-Pin QSOP Package

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

28 QSOP

MAX1813EEI

-40°C to +85°C

Pin Configuration

TOP VIEW

V+

VPCS

SKP/SDN

TIME

28 DH

27 LX

26 BST

25 D0

24 D1

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.

MAX1813

23 D2

22 D3

21 D4

The MAX1813 is available in a 28-pin QSOP package.

20 CODE

19 ZMODE

18 SUS

Applications

TON 10

REF 11

Notebook Computers

(Intel IMVP–II™/Coppermine™)

Docking Stations

ILIM 12

17 V

PGOOD 13

GND 14

16 DL

15 PGND

CPU Core Supply

QSOP

Single-Stage (BATT to V ) Converters

CORE

Two-Stage (+5V to V

) Converters

CORE

Typical Operating Circuit appears at end of data sheet.

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

Coppermine and IMVP-ΙΙ are trademarks of Intel Corp.

________________________________________________________________ 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.

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与MAX1813相关器件

型号	品牌	获取价格	描述	数据表
MAX1813EEI	MAXIM	获取价格	Dynamically-Adjustable, Synchronous Step-Down Controller with Integrated Voltage Positioni
MAX1813EEI+	MAXIM	获取价格	暂无描述
MAX1813EEI+T	MAXIM	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1813EEI-T	MAXIM	获取价格	Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, 0.025
MAX1813EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1813
MAX1816	MAXIM	获取价格	Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers
MAX18166	ADI	获取价格	高效、4A、降压型DC-DC稳压器，内置功率开关
MAX18166EWE+	MAXIM	获取价格	High-Efficiency, 4A, Step-Down DC-DC Regulators with Internal Power Switches
MAX1816ETM	MAXIM	获取价格	Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers
MAX1816ETM+	MAXIM	获取价格	Dual Switching Controller, Current-mode, 1000kHz Switching Freq-Max, CQCC48, 7 X 7 MM, 0.8

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