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參數資料
| 型號： | MAX6650EUB+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Fan-Speed Regulators and Monitors with SMBus™/I<sup>2</sup>C-Compatible Interface |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.1 A, PDSO10 |
| 封裝： | MICRO MAX PACKAGE-10 |
| 文件頁數： | 2/25頁 |
| 文件大?。?/td> | 315K |
| 代理商： | MAX6650EUB+T |
across the fan until the desired speed is reached. Open-
loop operation allows the C to regulate fan speed direct-
ly. The C reads the fan speed from the Tach-
ometer-Count Register. Based on the tachometer
count, the C decides if the fan speed requires adjust-
ment, and changes the voltage across the fan by writ-
ing an 8-bit word to the DAC Register. Full-on mode
applies the maximum voltage across the fan, forcing it
to spin at full speed. Configuring GPIO1 (see the
General-Purpose Input/Output section) as an active-low
input provides additional hardware control that fully
turns on the fan and overrides all software commands.
General-Purpose Input/Output
The GPIO pins connect to the drain of the internal N-
channel MOSFET and pullup resistor (Figure 5). When
the N-channel MOSFET is off (Table 5), the pullup resis-
tor provides a logic-level high output. However, with the
MOSFET off, the GPIO may serve as an input pin and
its state is read from the GPIO Status Register (Table
6). The MAX6650/MAX6651 power up with the MOSFET
off, so input signals may be safely connected to the
GPIO pins. When using the GPIO pin as a general-pur-
pose output, change the output by writing to the GPIO
Definition Register.
GPIO0 may be configured as an ALERT output that will
go low whenever a fault-condition is detected (see the
Alarm-Enable and Status Registers section). GPIO1
may be configured as a FULL ON input to allow hard-
ware control to fully turn on the fan in case of software
or C failure. GPIO2 (MAX6651 only) may be config-
ured as an internal clock output or as an external clock
input to allow synchronization of multiple devices.
Alarm-Enable and Status Registers
The alarms are enabled only when the appropriate bits of
the Alarm-Enable Register are set (Table 7). The maxi-
mum and minimum output level alarms function only
when the device is configured to operate in the closed-
loop mode (see the Configuration-Byte Register section).
The Alarm Status Register allows the system to deter-
mine which alarm caused the alert output (Table 8).
The set-alarm and alert outputs clear after reading the
MAX6650/MAX6651
Fan-Speed Regulators and Monitors
with SMBus/I2C-Compatible Interface
10
______________________________________________________________________________________
Table 4. Configuration Byte Register
Figure 5. General-Purpose Input/Output Structure
MAX6650
MAX6651
100k
GPIO
STATUS
REGISTER
VCC
3.0V TO 5.5V
VCC
CBYPASS
GPIO_
GND
GPIO
DEFINITION
REGISTER
BIT
NAME
POR (DEFAULT)
STATE
FUNCTION
5 to 4
7 (MSB) to 6
—
0
Always 0
Operating Mode:
00 = Software full-on (default)
01 = Software off (shutdown)
10 = Closed-loop operation
11 = Open-loop operation
00
MODE
3
5/12V
1
Fan/Tachometer Voltage:
0 = 5V
1 = 12V (default)
2 to 0 (LSB)
SCALE
010
Prescaler Division:
000 = Divide by 1
001 = Divide by 2
010 = Divide by 4 (default)
011 = Divide by 8
100 = Divide by 16
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相關代理商/技術參數 |
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| MAX6651EEE | 功能描述:馬達/運動/點火控制器和驅動器 RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MAX6651EEE+ | 功能描述:馬達/運動/點火控制器和驅動器 Fan-Speed Regulator & Monitor RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MAX6651EEE+T | 功能描述:馬達/運動/點火控制器和驅動器 Fan-Speed Regulator & Monitor RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MAX6651EEE+TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX6651EEE-T | 功能描述:馬達/運動/點火控制器和驅動器 RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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