参数资料
型号: W83L786NR
厂商: WINBOND ELECTRONICS CORP
元件分类: 通信及网络
英文描述: SPECIALTY TELECOM CIRCUIT, PDSO20
封装: 0.209 INCH, SSOP-20
文件页数: 13/50页
文件大小: 998K
代理商: W83L786NR
W83L786NR/ W83L786NG
Publication Release Date: March 31, 2006
- 15 -
Revision 0.9
+12V
FAN
R1
R2
NMOS
PNP Transistor
C
+
-
PWM Clock Input
D
S
G
+5V
FAN
R1
R2
NMOS
PNP Transis
C
+
-
PWM Clock Input
D
S
G
Figure 9
7.6.2.3. DC Mode
W83L786NR/NG has a 4-bit DAC, which produces 0 to 3.3 voltages DC output that provides
maximum 2 sets for fan speed control. The analog output can be programmed in the CR 81, and CR
87 (manual mode). The expression of output voltage can be represented as follows,
16
Value
Register
bit
-
4
Programmed
VCC
Voltage
OUTPUT
×
=
The application circuit is shown as follows,
+
-
LM358
3
2
1
4
11
33K
FAN
3
2
1
0
IO-12V
47K
NPN
0.1U
IO+12V
R1
C1
Tachometer ou
R3
R4
Q1
FANOUT
Figure 10
Be careful when choosing the OP-AMP and the transistor. The OP-AMP is used for amplify the 5V
range of the DC output up to 12V. The transistor should has a suitable
β value to avoid its base
current pulling down the OP-AMP ’s output and gain the common current to operate the fan at fully
相关PDF资料
PDF描述
W83L786NG SPECIALTY TELECOM CIRCUIT, PDSO20
W89C92P DATACOM, ETHERNET TRANSCEIVER, PQCC28
W89C980P DATACOM, ETHERNET TRANSCEIVER, PQCC84
W9009 TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP32
W91030BS TELEPHONE CALLING NO IDENT CKT, PDSO24
相关代理商/技术参数
参数描述
W83L786R 制造商:WINBOND 制造商全称:Winbond 功能描述:H/W Monitoring IC
W83L951ADG 制造商:WINBOND 制造商全称:Winbond 功能描述:Mobile Keyboard and Embedded Controller
W83L951DG 功能描述:IC EMBEDDED CNTRLR 128-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:W83 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI,I²C,UART/USART 外围设备:POR,PWM,WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC(J 形引线) 包装:带卷 (TR)
W83L951FG 制造商:WINBOND 制造商全称:Winbond 功能描述:Mobile Keyboard and Embedded Controller
W84032K05M010 制造商:Woodhead Molex 功能描述: