5秒后页面跳转
TL7733BCD PDF预览

TL7733BCD

更新时间: 2024-10-27 22:42:11
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
15页 329K
描述
SUPPLY-VOLTAGE SUPERVISORS

TL7733BCD 数据手册

 浏览型号TL7733BCD的Datasheet PDF文件第6页浏览型号TL7733BCD的Datasheet PDF文件第7页浏览型号TL7733BCD的Datasheet PDF文件第8页浏览型号TL7733BCD的Datasheet PDF文件第10页浏览型号TL7733BCD的Datasheet PDF文件第11页浏览型号TL7733BCD的Datasheet PDF文件第12页 
TL7702B, TL7705B, TL7733B  
SUPPLY-VOLTAGE SUPERVISORS  
The TL7705BM is obsolete  
and no longer is supplied.  
SLVS037M SEPTEMBER 1989 REVISED MAY 2003  
APPLICATION INFORMATION  
V
S
System Supply  
8
10 kΩ  
V
CC  
RESET  
7
2
5
6
To System  
RESET  
SENSE  
Reset Input  
(from system)  
RESIN  
REF  
CT  
1
3
R
T
To System  
RESET  
RESET  
GND  
(see text)  
10 kΩ  
C
0.1 µF  
4
T
Figure 8. System Reset Controller With Undervoltage Sensing  
When the TL770xB SENSE terminal is used to monitor V , a current-limiting resistor in series with C is  
CC  
T
recommended. During normal operation, the timing capacitor is charged by the onboard current source to  
approximately V or an internal voltage clamp (7.1-V Zener), whichever is less. When the circuit then is subjected  
CC  
to an undervoltage condition during which V  
is rapidly slewed down, the voltage on CT exceeds that on V . This  
CC  
CC  
forward biases a secondary path internally, which falsely activates the outputs. A fault is indicated when V  
drops  
CC  
below V  
, not when V  
falls below V  
.
(CT)  
SENSE  
T–  
Texas Instruments performs a 100% electrical screen to verify that the outputs do not switch with 1 mA forced into  
the CT terminal. Adding the external resistor, R , prevents false triggering. Its value is calculated as follows:  
T
V(  
VT  
)
CT  
RT  
Where:  
V
V
R
= V  
or 7.1 V, whichever is less  
(CT)  
T–  
T
CC  
= 4.55 V (nom)  
= value of series resistor required  
For V  
= 5 V:  
CC  
5
4.55  
RT  
1 mA  
Therefore,  
RT  
450  
Using a 20%-tolerance resistor, R should be greater than 560 .  
T
Adding this series resistor changes the duration of the reset pulse by no more than 10%. R extends the discharge  
T
of C , but also skews the V  
threshold. These effects tend to cancel one another. The precise percentage change  
T
(CT)  
can be derived theoretically, but the equation is complicated by this interaction and is dependent upon the duration  
of the supply-voltage fault condition.  
Both outputs of the TL770xB should be terminated with similar value resistors, even when only one is being used.  
This prevents unwanted plateauing in either output waveform during switching, which may be interpreted as an  
undefined state or delay system reset.  
9
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

TL7733BCD 替代型号

型号 品牌 替代类型 描述 数据表
TL7733BCDG4 TI

完全替代

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDRE4 TI

完全替代

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDE4 TI

完全替代

SUPPLY-VOLTAGE SUPERVISORS

与TL7733BCD相关器件

型号 品牌 获取价格 描述 数据表
TL7733BCDE4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDG4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDR TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDRE4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCDRG4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCP TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BCPE4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BID TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BIDE4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS
TL7733BIDG4 TI

获取价格

SUPPLY-VOLTAGE SUPERVISORS