Datasheet > MAX1966-MAX1967

MAX1966-MAX1967

更新时间： 2024-11-29 22:25:31

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
15页	404K
描述
Low-Cost Voltage-Mode PWM Step-Down Controllers

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MAX1966-MAX1967 数据手册

19-2286; Rev 1; 9/03

Low-Cost Voltage-Mode PWM

Step-Down Controllers

General Description

Features

The MAX1966/MAX1967 are voltage-mode pulse-width-

modulated (PWM), step-down DC-DC controllers that

are ideal for a variety of cost-sensitive applications.

They drive low-cost N-MOSFETs for both the high-side

switch and synchronous rectifier and require no external

Schottky power diode or current-sense resistor. Short-

circuit and current-limit protection is provided by sens-

ing the drain-to-source voltage on the low-side FET.

Both devices can supply outputs as low as 0.8V and are

well suited for DSP cores and other low-voltage logic.

ꢀ Cost-Optimized Design

ꢀ No Schottky Diode or Current-Sense Resistor

Required

ꢀ >95% Efficiency

ꢀ Low-Cost External Components

ꢀ All N-Channel FET Design

ꢀ 2.7V to 5.5V Input Range (MAX1966)

ꢀ 2.7V to 28V Input Range (MAX1967)

ꢀ 0.8V Feedback for Low-Voltage Outputs

The MAX1966 has an input range of 2.7V to 5.5V while

the MAX1967 has an input range of 2.7V to 28V. In

ultra-low-cost designs, the MAX1966/MAX1967 can

provide efficiency exceeding 90% and can achieve

95% efficiency with optimized component selection.

ꢀ 100kHz Switching Frequency Accommodates

Low-Cost Components

ꢀ Thermal Shutdown

The MAX1966/MAX1967 operate at 100kHz and ac-

commodate aluminum electrolytic capacitors and pow-

dered-iron core magnetics in minimum-cost designs.

They also provide excellent performance with high-per-

formance surface-mount components. The MAX1966 is

available in a low-cost 8-pin SO package. The MAX1967

is available in a 10-pin µMAX package.

ꢀ Output Current-Limit and Short-Circuit Protection

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 SO

Applications

MAX1966ESA

MAX1967EUB

10 µMAX

Set-Top Boxes

Telecom Power Supplies

Graphic Card Supplies Networking Power

Supplies

xDSL Modems and

Routers

Termination Supplies

Typical Operating Circuit

Cable Modems and

Routers

2.7V TO

5.5V INPUT

Pin Configurations

BST

VIN

TOP VIEW

OUT

MAX1966

BST

COMP/EN

GND

MAX1966

GND

VIN

Pin Configurations continued at end of data sheet.

________________________________________________________________ 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...15

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与MAX1966-MAX1967相关器件

型号	品牌	获取价格	描述	数据表
MAX1967	ADI	获取价格	低成本、电压模式、PWM降压型控制器
MAX1967EUB	MAXIM	获取价格	Low-Cost Voltage-Mode PWM Step-Down Controllers
MAX1967EUB+	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M
MAX1967EUB+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M
MAX1967EUB-T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M
MAX1968	MAXIM	获取价格	Power Drivers for Peltier TEC Modules
MAX1968	ADI	获取价格	Peltier TEC模块电源驱动器
MAX1968_07	MAXIM	获取价格	Power Drivers for Peltier TEC Modules
MAX1968EUI	MAXIM	获取价格	Power Drivers for Peltier TEC Modules
MAX1968EUI+	MAXIM	获取价格	Switching Regulator, Current-mode, 4.5A, 1000kHz Switching Freq-Max, BICMOS, PDSO28, 4.40

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