Datasheet > MAX6620_13

MAX6620_13

更新时间： 2024-11-13 12:10:19

品牌	Logo	应用领域
美信 - MAXIM		风扇控制器
页数	文件大小	规格书
30页	315K
描述
Quad Linear Fan-Speed Controller

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MAX6620_13 数据手册

EVALUATION KIT AVAILABLE

MAX6620

Quad Linear Fan-Speed Controller

General Description

Features

o Controls Up to Four Independent Fans With

The MAX6620 controls the speeds of up to four fans

using four independent linear voltage outputs. The

drive voltages for the fans are controlled directly over

the I²C interface. Each output drives the base of an

external bipolar transistor or the gate of a FET in high-

side drive configuration. Voltage feedback at the fan’s

power-supply terminal is used to force the correct out-

put voltage.

Linear (DC) Drive

o Uses Four External Low-Cost Pass Transistors

o 1% Accuracy Precision RPM Control

o Controlled Voltage Rate-Of-Change for Best

Acoustics

o I²C Bus Interface

o 3.0V to 5.5V Supply Voltage Range

o 250µA (typ) Operating Supply Current

o 3µA (typ) Shutdown Supply Current

o Small 5mm x 5mm Footprint

The MAX6620 offers two methods for fan control. In

RPM mode, the MAX6620 monitors four fan tachometer

logic outputs for precise ( 1ꢀ% control of fan RPM and

detection of fan failure. In DAC mode, each fan is dri-

ven with a voltage resolution of 9 bits and the tachome-

ter outputs of the fans are monitored for failure.

The DAC_START input selects the fan power-supply

voltage at startup to ensure appropriate fan drive when

power is first applied. A watchdog feature turns the

fans fully on to protect the system if there are no valid

I²C communications within a preset timeout period.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX6620ATI+

-40°C to +125°C

28 TQFN-EP*

The MAX6620 operates from a 3.0V to 5.5V power sup-

ply with low 250µA supply current, and the I²C-compati-

ble interface makes it ideal for fan control in a wide

range of cooling applications. The MAX6620 is avail-

able in a 28-pin TQFN package and operates over the

-40°C to +125°C automotive temperature range.

+Denotes a lead-free package.

*EP = Exposed paddle.

Pin Configuration

Applications

Consumer Products

Servers

TOP VIEW

Communications Equipment

Storage Equipment

21 20 19 18 17 16 15

TACH1 22

TACH4

DACFB4

DACFB1 23

12 DACOUT4

DACOUT1

GND

MAX6620

GND

FAN

VCC

FAN_FAIL

Typical Application Circuit appears at end of data sheet.

TQFN

(5mm × 5mm × 0.8mm)

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-4039; Rev 1; 1/13

12 3 4 5 6 7...30

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与MAX6620_13相关器件

型号	品牌	获取价格	描述	数据表
MAX6620ATI	MAXIM	获取价格	Quad Linear Fan-Speed Controller
MAX6620ATI+	MAXIM	获取价格	Quad Linear Fan-Speed Controller
MAX6620ATI+T	MAXIM	获取价格	Switching Regulator, CMOS, TQFN-28
MAX6620EVCMAXQU	MAXIM	获取价格	Uses Four External Low-Cost PNP Pass Transistors
MAX6620EVCMAXQU+	MAXIM	获取价格	Uses Four External Low-Cost PNP Pass Transistors
MAX6620EVKIT+	MAXIM	获取价格	Uses Four External Low-Cost PNP Pass Transistors
MAX6621	MAXIM	获取价格	PECI-to-I2C Translator
MAX6621	ADI	获取价格	PECI至I2C转换器
MAX6621_0709	MAXIM	获取价格	PECI-to-I2C Translator
MAX6621_09	MAXIM	获取价格	PECI-to-I2C Translator

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