MAX1714

更新时间： 2024-09-17 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
24页	442K
描述
High-Speed Step-Down Controller for Notebook Computers

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数据手册

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MAX1714 数据手册

19-1536; Rev 1; 12/99

High-Speed Step-Down Controller

for Notebook Computers

General Description

Features

The MAX1714 pulse-width modulation (PWM) controller

provides the high efficiency, excellent transient

response, and high DC output accuracy needed for

stepping down high-voltage batteries to generate low-

voltage CPU core or chip-set/RAM supplies in notebook

computers.

ꢀ Ultra-High Efficiency

ꢀ No Current-Sense Resistor (Lossless I

)

LIMIT

ꢀ Quick-PWM with 100ns Load-Step Response

ꢀ 1% V Accuracy Over Line and Load

OUT

ꢀ 2.5V/3.3V Fixed or 1V to 5.5V Adjustable Output

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.

Range

ꢀ 2V to 28V Battery Input Range

ꢀ 200/300/450/600kHz Switching Frequency

ꢀ Overvoltage Protection (MAX1714A)

ꢀ Undervoltage Protection

The MAX1714 achieves high efficiency at a reduced

cost by eliminating the current-sense resistor found in

traditional current-mode PWMs. Efficiency is further

enhanced by an ability to drive very large synchronous-

rectifier MOSFETs.

ꢀ 1.7ms Digital Soft-Start

ꢀ Drives Large Synchronous-Rectifier FETs

ꢀ 2V 1% Reference Output

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

battery) at a higher switching frequency allows the mini-

mum possible physical size.

ꢀ Power-Good Indicator

Ordering Information

The MAX1714 is intended for CPU core, chipset,

DRAM, or other low-voltage supplies as low as 1V. The

MAX1714A is available in a 20-pin QSOP package and

includes overvoltage protection. The MAX1714B is

available in a 16-pin QSOP package with no overvolt-

age protection. For applications requiring VID compli-

ance or DAC control of output voltage, refer to the

MAX1710/MAX1711 data sheet. For a dual output ver-

sion, refer to the MAX1715^†data sheet.

PART

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

20 QSOP

MAX1714AEEP

MAX1714BEEE

16 QSOP

Minimal Operating Circuit

BATTERY

4.5V TO 28V

+5V INPUT

Applications

V+

Notebook Computers

SHDN

CPU Core Supply

BST

ILIM

Chipset/RAM Supply as Low as 1V

1.8V and 2.5V I/O Supply

OUTPUT

1.25V TO 2V

MAX1714

REF

PGOOD PGND

(GND)

OUT

SKIP

AGND

(GND)

Quick-PWM is a trademark of Maxim Integrated Products.

^†Future product—contact factory for availability.

( ) ARE FOR THE MAX1714B ONLY.

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...24

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与MAX1714相关器件

型号	品牌	获取价格	描述	数据表
MAX17149	MAXIM	获取价格	MAX17129 Evaluation Kit
MAX17149ETE+	MAXIM	获取价格	LED Driver, 60-Segment, BICMOS, 3 X 3 MM, ROHS COMPLAINT, QFN-16
MAX17149ETE+T	MAXIM	获取价格	LED Driver
MAX1714A	ADI	获取价格	高速、降压型控制器，用于笔记本电脑
MAX1714AEEP	MAXIM	获取价格	High-Speed Step-Down Controller for Notebook Computers
MAX1714AEEP+	MAXIM	获取价格	Switching Controller, Current-mode, 600kHz Switching Freq-Max, PDSO20, 0.150 INCH, 0.025 I
MAX1714AEEP+T	MAXIM	获取价格	Switching Controller, Current-mode, 600kHz Switching Freq-Max, PDSO20, 0.150 INCH, 0.025 I
MAX1714AEEP-T	MAXIM	获取价格	Switching Controller, Current-mode, 600kHz Switching Freq-Max, PDSO20, 0.150 INCH, 0.025 I
MAX1714AEVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1714A
MAX1714B	ADI	获取价格	高速、降压型控制器，用于笔记本电脑

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