參數(shù)資料
型號(hào): TLV431B
廠商: ON SEMICONDUCTOR
英文描述: Low Voltage Precision Adjustable Shunt Regulator(低壓可調(diào)精密分流穩(wěn)壓器)
中文描述: 低電壓精密可調(diào)并聯(lián)穩(wěn)壓器(低壓可調(diào)精密分流穩(wěn)壓器)
文件頁(yè)數(shù): 6/14頁(yè)
文件大?。?/td> 146K
代理商: TLV431B
TLV431A, TLV431B
http://onsemi.com
6
T
A
= 25
°
C
C
L
, LOAD CAPACITANCE
10
pF
100
pF
20
15
10
5.0
0
I
25
1.0
nF
0.01
F
0.1
F
100
F
1.0
F
10
F
C
A
B
D
Stable
Stable
Stable
Figure 16. Spectral Noise Density
Figure 17. Pulse Response
f, FREQUENCY (Hz)
350
275
10 k
1.0 k
100
10
N
250
300
100 k
325
Figure 18. Stability Boundary Conditions
I
K
V
KA
= V
ref
I
K
= 10 mA
T
A
= 25
°
C
I
ref
Input
Output
50
P
G
f
Output
Input
H
Figure 19. Test Circuit for Figure 18
C
L
I
K
1.0 k
V+
Output
Input
1.8 k
0
2.0
4.0
t, TIME ( s)
6.0
8.0
10.0
0
2.0
0
0.5
( 1.0
1.5
T
A
= 25
°
C
1.0
3.0
5.0
7.0
9.0
Unstable
Regions
V
KA
(V)
R1
(k )
A, C
V
ref
B, D
5.0
0
30.4
R2
R1
R2
(k )
10
Stability
Figures 18 and 19 show the stability boundaries and
circuit configurations for the worst case conditions with the
load capacitance mounted as close as possible to the device.
The required load capacitance for stable operation can vary
depending on the operating temperature and capacitor
equivalent series resistance (ESR). Ceramic or tantalum
surface mount capacitors are recommended for both
temperature and ESR. The application circuit stability
should be verified over the anticipated operating current and
temperature ranges.
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