 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
TC648VPA 数据表(PDF) 5 Page - Microchip Technology |
|
||||||||||||||||||||||||||||||
TC648VPA 数据表(HTML) 5 Page - Microchip Technology |
|
|
5 / 28 page  2002 Microchip Technology Inc. DS21448C-page 5 TC648 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE 2.1 Analog Input (VIN) The thermistor network (or other temperature sensor) connects to the VIN 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 (see Section 5.0, “Typical Applications”, for more details). 2.2 Analog Output (CF) CF is the positive terminal for the PWM ramp generator timing capacitor. The recommended CF is 1 µF for 30 Hz PWM operation. 2.3 Analog Input (VAS) An external resistor divider connected to the VAS input sets the auto-shutdown threshold. Auto-shutdown occurs when VIN ≤ VAS. During shutdown, supply current falls to 25 µA (typical). The fan is automatically restarted when VIN ≥ (VAS +VHAS) (see Section 5.0, “Typical Applications” for more details). 2.4 Ground (GND) GND denotes the ground Terminal. 2.5 No Connect No internal connection. 2.6 Digital Output (OTF) OTF goes low to indicate an over-temperature condition. This occurs when the voltage at VIN > VOTF (see Section 1.0, "Electrical Characteristics"). An over- temperature indication is a non-latching condition. 2.7 Digital Output (VOUT) VOUT is an active high complimentary output that drives the base of an external NPN transistor (via an appropri- ate base resistor) or the gate of an N-channel MOS- FET. This output has asymmetrical drive (see Section 1.0, “Electrical Characteristics”). 2.8 Power Supply Input (VDD) VDD may be independent of the fan’s power supply (see Section 1.0, “Electrical Characteristics”). Pin No. Symbol Description 1VIN Analog Input 2CF Analog Output 3VAS Analog Input 4 GND Ground Terminal 5 NC No Internal Connection 6OTF Digital (Open Collector) Output 7VOUT Digital Output 8VDD Power Supply Input |
类似零件编号 - TC648VPA |
|
类似说明 - TC648VPA |
|
|
|
链接网址 |
| 隐私政策 |
| ALLDATASHEETCN.COM |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
