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參數資料
| 型號： | MC14521BFR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 諧振器 |
| 英文描述： | Non-inverting Fast Synchronous Buck MOSFET Drivers with Enable 14-SOIC |
| 中文描述： | 4000/14000/40000 SERIES, PRESCALER, PDSO16 |
| 封裝： | EIAJ, SOIC-16 |
| 文件頁數： | 6/12頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MC14521BFR2 |
MC14521B
http://onsemi.com
6
Figure 5. RC Oscillator Stability
Figure 6. RC Oscillator Frequency as a
Function of R
TC
and C
–55
–25
T
A
, AMBIENT TEMPERATURE (
°
C), DEVICE ONLY
0
25
50
75
100
125
8.0
4.0
0
–4.0
–8.0
–12
–16
F
TEST CIRCUIT
FIGURE 7
V
DD
= 15 V
10 V
5.0 V
R
TC
= 56 k
,
C = 1000 pF
R
S
= 0, f = 10.15 kHz @ V
DD
= 10 V, T
A
= 25
°
C
R
S
= 120 k
, f = 7.8 kHz @ V
DD
= 10 V, T
A
= 25
°
C
{
f
100
50
20
10
5.0
1.0
2.0
0.1
0.2
0.5
1.0 k
10 k
R
TC
, RESISTANCE (OHMS)
100 k
1.0 m
0.0001
0.001
C, CAPACITANCE (
μ
F)
0.01
0.1
V
DD
= 10 V
f AS A FUNCTION
OF R
(C = 1000 pF)
(R
S
≈
2R
TC
)
TEST CIRCUIT
FIGURE 7
f AS A FUNCTION
OF C
(R
TC
= 56 k
)
(R
S
= 120 k)
Figure 7. RC Oscillator Circuit
Figure 8. Functional Test Circuit
OUT 1
OUT 2
Q18
Q19
Q20
Q21
Q22
Q23
Q24
IN 1
IN 2
R
V
DD
V
DD
′
V
SS
V
SS
′
V
DD
R
S
R
TC
C
Q18
Q19
Q20
Q21
Q22
Q23
Q24
OUT 1
OUT 2
IN 1
IN 2
R
V
DD
′
V
DD
V
SS
V
SS
PULSE
GENERATOR
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