MAX31790

更新时间： 2024-01-26 20:30:04

品牌	Logo	应用领域
美信 - MAXIM		风扇控制器
页数	文件大小	规格书
43页	2219K
描述
6-Channel PWM-Output Fan RPM Controller

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

MAX31790 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	HVQCCN,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.31.00.01
Factory Lead Time：	7 weeks	风险等级：	1.52
Is Samacsys：	N	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-XQCC-N28	长度：	4 mm
功能数量：	1	端子数量：	28
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	座面最大高度：	0.8 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
温度等级：	AUTOMOTIVE	端子形式：	NO LEAD
端子节距：	0.4 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4 mm
Base Number Matches：	1

MAX31790 数据手册

EVALUATION KIT AVAILABLE

MAX31790

6-Channel PWM-Output Fan RPM Controller

General Description

Features

The MAX31790 controls the speeds of up to six fans

using six independent PWM outputs. The desired fan

speeds (or PWM duty cycles) are written through the I C

interface. The outputs drive “4-wire” fans directly, or can

be used to modulate the fan’s power terminals using an

external pass transistor.

S Controls Up to Six Independent Fans with PWM Drive

S Up to 12 Tachometer Inputs

S Controlled Duty Cycle Rate-of-Change for Best

Acoustics

S I C Bus Interface with Timeout and Watchdog

Tachometer inputs monitor fan tachometer logic outputs

for precise (Q1%) monitoring and control of fan RPM as

well as detection of fan failure. Six pins are dedicated

tachometer inputs. Any of the six PWM outputs can also

be configured to serve as tachometer inputs.

S 3.0V to 5.5V Supply Voltage Range

S 1.5mA (typ) Operating Supply Current

Applications

The PWM_START inputs select the PWM output status

at startup to ensure appropriate fan drive when power is

first applied.

Servers

Networking

Telecom

To ensure low acoustic impact of fan control, all changes

in PWM duty cycle take place at a controlled, program-

mable rate.

Ordering Information appears at end of data sheet.

The MAX31790’s 3.0V to 5.5V supply voltage range and

I C-compatible interface make it ideal for fan control in

For related parts and recommended products to use with this part,

refer to: www.maximintegrated.com/MAX31790.related

a wide range of cooling applications. The MAX31790 is

available in a 28-pin TQFN package and operates over

the -40NC to +125NC temperature range.

Typical Operating Circuit

CRYSTAL

(OPTIONAL)

3.0V TO 5.5V

12pF

0.1µF

XTAL1 XTAL2

MAX31790

4-WIRE FAN

SDA

SCL

PWMOUT1

FAN1

HOST

INTERFACE

TACH1

FAN_FAIL

PWMOUT2

FULL_SPEED

TACH2

CLKOUT

PWMOUT3

I C INTERFACE,

REGISTERS,

AND

PWM OUTPUT

DRIVER,

TACH MONITOR

TACH3

PWM_START1

PWM_START0

PWMOUT4

CONTROL LOGIC

TACH4

FREQ_START

SPIN_START

WD_START

ADD1

SET

POWER-UP

VALUES

PWMOUT5

TACH5

PWMOUT6

ADD0

TACH6

6 CHANNELS

GND

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

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

19-6540; Rev 0; 12/12

12 3 4 5 6 7...43

下载PDF

与MAX31790相关器件

型号	品牌	描述	获取价格	数据表
MAX31790ATI+	MAXIM	6-Channel PWM-Output Fan RPM Controller	获取价格
MAX31790ATI+T	MAXIM	6-Channel PWM-Output Fan RPM Controller	获取价格
MAX317C/D	MAXIM	Precision, CMOS Analog Switches	获取价格
MAX317CJA	MAXIM	Precision, CMOS Analog Switches	获取价格
MAX317CPA	MAXIM	Precision, CMOS Analog Switches	获取价格
MAX317CSA	MAXIM	Precision, CMOS Analog Switches	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX31790

MAX31790 技术参数

MAX31790 数据手册

与MAX31790相关器件

与MAX31790相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX31790

MAX31790 技术参数

MAX31790 数据手册

与MAX31790相关器件

与MAX31790相关文章

您还可以找

您在本页遇到什么问题？