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参数资料
| 型号： | TC649VOART |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 11/17页 |
| 文件大小： | 119K |
| 代理商： | TC649VOART |
3
TC649-2 12/05/00
TC649
2001 Microchip Technology Inc.
DS21449A
PWM Fan Speed Controller with Auto-Shutdown
Pin No.
1VIN
Analog input. The thermistor network (or other temperature sensor) connects to this input. A
voltage range of 1.25V to 2.65V (typical) on this pin drives an active duty cycle of 0% to
100% on the VOUT pin. The TC649 enters Shutdown mode when 0
≤ VIN ≤ VSHDN. During
Shutdown, the FAULT output is inactive, and supply current falls to 25
A (typical). The
TC649 exits Shutdown mode when VIN
≥ VREL. See Applications section for more details.
2CF
Analog output. Positive terminal for the PWM ramp generator timing capacitor. The recom-
mended CF is 1
F for 30Hz PWM operation.
3VAS
Analog input. An external resistor divider connected to this input sets the Auto-Shutdown
threshold. Auto-shutdown occurs when VIN
≤ VAS. The fan is automatically restarted when
VIN
≥ (VAS +VHAS). See the Applications section for more details.
4
GND
Ground Terminal.
5
SENSE
Analog input. Pulses are detected at this pin as fan rotation chops the current through the
sense resistor, RSENSE. The absence of pulses indicates a fault. See the Applications
section for more details.
6
FAULT
Digital (open collector) output. This line goes low to indicate a fault condition. When FAULT
goes low due to a fan fault, the device is latched in Shutdown mode until deliberately
cleared, or until power is cycled.
7VOUT
Digital output. This active high complementary output drives the base of an external NPN
transistor via an appropriate base resistor. This output has asymmetrical drive. See
Electrical Characteristics section.
8VDD
Power supply input. May be independent of fan power supply. See Electrical Characteristics
section.
PIN DESCRIPTION
(PDIP/SOIC)
Symbol
Description
D.C. ELECTRICAL CHARACTERISTICS (Cont.): TMIN ≤ TA ≤ TMAX, VDD = 3.0V to 5.5V unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Units
VIN, VAS Inputs
VC(MAX)
Voltage at VIN for 100%
2.5
2.65
2.8
V
Duty Cycle
VC(SPAN)
VC(MAX) – VC(MIN)
1.3
1.4
1.5
V
VAS
Auto-Shutdown Threshold
VC(MAX) –—
VC(MAX)
V
VC(SPAN)
VSHDN
Voltage on VIN to Activate
—
VDD x 0.13
V
RESET/SHUTDOWN
VREL
Voltage Applied to VIN to
VDD = 5V
VDD x 0.19
—
V
Release Reset Mode
(Refer to Figure 13)
VHYST
Hysteresis on VSHDN, VREL
—
0.01 x VDD
—V
VHAS
Hysteresis on Auto-Shutdown
—
70
—
mV
Comparator
Pulse-Width Modulator
FOSC
PWM Frequency
CF = 1.0
F26
30
34
Hz
NOTE: 1. Not tested.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC649VOATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VPA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VUA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VUATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC6-4A11 | 制造商:FERROXCUBE 制造商全称:Ferroxcube International Holding B.V. 功能描述:Ferrite toroids |
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