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參數(shù)資料
| 型號： | T1431QPW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | PRECISION PROGRAMMABLE REFERENCE |
| 中文描述： | 精密可編程的參考 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大小： | 345K |
| 代理商： | T1431QPW |
www.ti.com
+
TL1431
12 V
6.8 k
5 V +0.5%
10 k
10 k
0.1%
10 k
0.1%
V
CC
X
Not
Used
TL598
Feedback
V
(BATT)
R3
R4
R1A
R2A
R1B
R2B
TL1431
Low Limit
1
R1B
High Limit
1
R1A
LED on When
Low Limit < V
(BATT)
< High Limit
TL1431
TL1431
12 V
680
2 k
R
Off
On
C
Delay
R
C
II
12 V
(12 V)
VI(ref)
V
(BATT)
TL1431
I
O
R
S
0.1%
IO
VI(ref)
RS
V
(BATT)
R1
R
CL
0.1%
TL1431
IO
VI(ref)
RCL
IKA
I
O
R1
V(BATT)
IO
hFE
IKA
TL1431
PRECISION PROGRAMMABLE REFERENCE
SLVS062K–DECEMBER 1991–REVISED OCTOBER 2006
Figure 24. PWM Converter With 0.5% Reference
Figure 26. Delay Timer
A.
Select R3 and R4 to provide the desired
LED intensity and cathode current
≥
1 mA to
the TL1431.
Figure 25. Voltage Monitor
Figure 27. Precision Current Limiter
Figure 28. Precision Constant-Current Sink
14
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