MAX8716

更新时间： 2024-09-16 03:14:59

品牌	Logo	应用领域
美信 - MAXIM		电脑控制器
页数	文件大小	规格书
30页	730K
描述
Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers

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MAX8716 数据手册

19-3569; Rev 1; 6/05

Interleaved High-Efficiency, Dual Power-Supply

Controllers for Notebook Computers

General Description

Features

The MAX8716/MAX8717/MAX8757 are dual, step-

down, interleaved, fixed-frequency, switch-mode

power-supply (SMPS) controllers with synchronous rec-

tification. They are intended for main (5V/3.3V) and I/O

power generation in battery-powered systems.

♦ Fixed 200kHz, 300kHz, or 500kHz Switching

Frequency

♦ No Current-Sense Resistor Required

♦ 40/60 Optimal Interleaving

♦ Reduced Input-Capacitor Requirement

Fixed-frequency operation with optimal interleaving

minimizes input ripple current from the lowest input volt-

ages up to the 26V maximum input. Optimal 40/60 inter-

leaving allows the input voltage to go down to 8.3V

before duty-cycle overlap occurs, compared to 180°

out-of-phase regulators where the duty-cycle overlap

occurs when the input drops below 10V.

♦ 3.3V and 5V fixed or 1.0V to 5.5V Adjustable

Outputs (Dual Mode™)

♦ 4V to 26V Input Range

♦ Independently Selectable PWM, Skip, and Low-

Noise Mode Operation

Accurate output current limit is achieved using a sense

resistor. Alternatively, power dissipation can be

reduced using lossless inductor current sensing.

Independent ON/OFF controls and power-good signals

allow flexible power sequencing. Soft-start reduces

inrush current, while soft-stop gradually ramps the out-

put voltage down preventing negative voltage dips.

A low-noise mode maintains high light-load efficiency

while keeping the switching frequency out of the audi-

ble range.

♦ Soft-Start and Soft-Stop

♦ 2V Precision Reference with 0.75% Accuracy

♦ Independent Power-Good Outputs

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX8716ETG

-40°C to +85°C 24 Thin QFN 4mm x 4mm

MAX8716ETG+ -40°C to +85°C 24 Thin QFN 4mm x 4mm

The MAX8716 is available in a 24-pin thin QFN pack-

age, and the MAX8717/MAX8757 are available in a 28-

pin thin QFN package.

MAX8717ETI

MAX8717ETI+

MAX8757ETI+

-40°C to +85°C 28 Thin QFN 5mm x 5mm

Applications

+Denotes lead-free package.

2 to 4 Li+ Cell Battery-Powered Devices

Notebook and Subnotebook Computers

PDAs and Mobile Communicators

Main or I/O Power Supplies

Dual Mode is a trademark of Maxim Integrated Products, Inc.

Pin Configurations

TOP VIEW

21 20 19 18 17 16 15

18 17 16 15 14 13

DH1

14 DH2

DH1 19

BST1 20

12 DH2

11 BST2

BST1

BST2

CSH2

CSH1 24

CSL1 25

FB1 26

CSH1 21

CSL1 22

10 CSH2

MAX8716ETG

11 CSL2

CSL2

MAX8717ETI

MAX8757ETI+

FB1 23

FB2

PGOOD1 24

PGOOD2

PGOOD1

PGOOD2

ILIM2

ILIM1 28

TQFN

________________________________________________________________ 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.

12 3 4 5 6 7...30

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与MAX8716相关器件

型号	品牌	获取价格	描述	数据表
MAX8716ETG	MAXIM	获取价格	Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8716ETG+	MAXIM	获取价格	Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8716ETG+T	MAXIM	获取价格	Dual Switching Controller, Current-mode, 3.3A, 575kHz Switching Freq-Max, BICMOS, 4 X 4 MM
MAX8716ETG-T	MAXIM	获取价格	Dual Switching Controller, Current-mode, 3.3A, 575kHz Switching Freq-Max, BICMOS, 4 X 4 MM
MAX8717	MAXIM	获取价格	Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8717	ADI	获取价格	交叉工作、高效、双电源控制器，用于笔记本电脑
MAX8717ETI	MAXIM	获取价格	Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8717ETI+	MAXIM	获取价格	Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8717ETI-T	MAXIM	获取价格	Dual Switching Controller, Current-mode, 3.3A, 575kHz Switching Freq-Max, BICMOS, 5 X 5 MM
MAX8718	MAXIM	获取价格	High-Voltage, Low-Power Linear Regulators for Notebook Computers

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