參數(shù)資料
型號(hào): TL1431QPW
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(yè)數(shù): 14/24頁(yè)
文件大小: 345K
代理商: TL1431QPW
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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