參數(shù)資料
型號(hào): TL431CPSE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 5/24頁
文件大小: 386K
代理商: TL431CPSE4
TL431, TL431A
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS005M – JULY 1978 – REVISED OCTOBER 2000
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
3
2
1
0
–1
0
1
2
3
4
Input
and
Output
V
oltage
V
4
5
PULSE RESPONSE
6
56
7
Input
Output
TA = 25°C
220
50
GND
Output
Pulse
Generator
f = 100 kHz
TEST CIRCUIT FOR PULSE RESPONSE
t – Time –
s
Figure 15
50
40
10
0
0.001
0.01
0.1
1
70
90
STABILITY BOUNDARY CONDITIONS
100
10
30
80
60
20
TA = 25°C
B
Stable
A VKA = Vref
B VKA = 5 V
C VKA = 10 V
D VKA = 15 Vf
CL – Load Capacitance – F
A
C
D
150
IKA
R1 = 10 k
R2
CL
VBATT
IKA
CL
VBATT
150
TEST CIRCUIT FOR CURVE A
TEST CIRCUIT FOR CURVES B, C, AND D
Cathode
Current
mA
I KA
The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted
to establish the initial VKA and IKA conditions with CL = 0. VBATT and
CL then were adjusted to determine the ranges of stability.
+
+
Figure 16
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