LDOの基本等価回路集

1. All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015
LDOの基本等価回路集
2015年1月28日
ビー・テクノロジー

2. Equivalent Circuit 1
V1
6Vdc
Q2
Q2N1420
R1
100k
U1A
LM158
+
3
-
2
V+
8
V-
4
OUT
1
Cbreak
C1
10p
V2
1.25Vdc
R3
10k
R2
30k
Cbreak
C2
10u
R4
100
Q1
Q2N1132
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

3. Equivalent Circuit 2
Vin
Q2
U1A
+
3
-
2
V+
8
V-
4
OUT
1
CL
Vref
R2
R1
Co RL
Q1
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

4. Equivalent Circuit 3
Vin
Q1
U1A
+
3
-
2
V+
8
V-
4
OUT
1
C
Vref
R2
R1
RL
R3
OUTIN Q4
Q3
Q2
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

5. Equivalent Circuit 4
NPN
U1A
+
3
-
2
V+
8
V-
4
OUT
1
C
Vref
R2
R1
RL
R3
PNP
Cout
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

6. Equivalent Circuit 5
U1A
+
3
-
2
V+
8
V-
4
OUT
1
C
VREF
R2
R1
RL
R3
VIN
VREF
VOUT
NPN1
PNP1
Error Amp
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

7. Equivalent Circuit 6
U1A
+
3
-
2
V+
8
V-
4
OUT
1
C
VREF
R2
R1
RL
R3
VIN
VREF
VOUT
PMOS
ERROE Amp
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

8. Equivalent Circuit 7
Vin
NPN
U1A
+
3
-
2
V+
8
V-
4
OUT
1
Cc
Vref
R2 Cout R
PNP
Rs
R1 Cf f
Error Amp
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

9. Equivalent Circuit 8
Vin
NPN
U1A
+
3
-
2
V+
8
V-
4
OUT
1
CC
Vref
R2
Cout
R
PNP
Rs
R1
Error Amp
RESR
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015

10. Equivalent Circuit 9
R4
PTAT
Nononerting Vos
wideband driver
U1A
+
3
-
2
V+
8
V-
4
OUT
1
R2
R1
R
VIN VOUT
PNP1
CL
D1R3
Ccomp
All Rights Reserved Copyright (C) Bee Technologies Inc. 2015
1/28/2015