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參數資料
| 型號： | TL7705BMFK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, CQCC20 |
| 封裝： | CC-20 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 138K |
| 代理商： | TL7705BMFK |
TL7702B, TL7705B, TL7733B
SUPPLY-VOLTAGE SUPERVISORS
SLVS037L – SEPTEMBER 1989 – REVISED MAY 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Power-On Reset Generator
Automatic Reset Generation After
Voltage Drop
RESET Output Defined From V
CC
≥
1 V
Precision Voltage Sensor
Temperature-Compensated Voltage
Reference
True and Complement Reset Outputs
Externally Adjustable Pulse Duration
description
The TL7702B, TL7705B, and TL7733B are
integrated-circuit
supply-voltage
designed for use as reset controllers in
microcomputer and microprocessor systems. The
supply-voltage supervisor monitors the supply for
undervoltage conditions at the SENSE input.
During power up, the RESET output becomes
active (low) when V
CC
attains a value
approaching 1 V. As V
CC
approaches 3 V
(assuming that SENSE is above V
T+
), the delay
timer function activates a time delay, after which
outputs RESET and RESET go inactive (high and
low, respectively). When an undervoltage
condition occurs during normal operation, outputs
RESET and RESET go active. To ensure that a
complete reset occurs, the reset outputs remain
active for a time delay after the voltage at the
SENSE input exceeds the positive-going
threshold value. The time delay is determined by
the value of the external capacitor C
T
:
t
d
≈
2.6
×
10
4
×
C
T
, where C
T
is in farads (F) and
t
d
is in seconds (s).
An external capacitor (typically 0.1
μ
F) must be
connected to REF to reduce the influence of fast
transients in the supply voltage.
supervisors
The TL7702BC, TL7705BC, and TL7733BC are characterized for operation from 0
°
C to 70
°
C. The TL7702BI,
TL7705BI, and TL7733BI are characterized for operation from –40
°
C to 85
°
C. The TL7705BQ is characterized
for operation from –40
°
C to 125
°
C. The TL7705BM is characterized for operation from –55
°
C to 125
°
C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
2002, Texas Instruments Incorporated
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
SENSE
NC
RESET
NC
NC
RESIN
NC
CT
NC
TL7705BM . . . FK PACKAGE
(TOP VIEW)
N
R
N
R
N
V
N
N
G
N
C
1
2
3
4
8
7
6
5
REF
RESIN
CT
GND
V
CC
SENSE
RESET
RESET
TL77xxBC . . . D OR P PACKAGE
TL7705BM . . . JG PACKAGE
TL7705BQ . . . D PACKAGE
(TOP VIEW)
1
2
3
4
5
10
9
8
7
6
NC
REF
RESIN
CT
GND
NC
V
CC
SENSE
RESET
RESET
TL7705BM . . . U PACKAGE
(TOP VIEW)
NC – No internal connection
NC – No internal connection
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TL7705BMFKB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705BMJG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705BMJGB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705BMU | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705BMUB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
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