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BD3506F-E2

P1-P3P4-P6P7-P9P10-P12P13-P15
Technical Note
4/14
www.rohm.com
2010.05 - Rev.
A
© 2010 ROHM Co., Ltd. All rights reserved.
BD3506F,BD3506EFV
Fig.13 VNRCS-VFB
Fig.14 Transient Response (fall)
Cout=220uF
Fig.15 Transient Response (rise)
47u MLCC+30m
Fig.16 Transient Response (fall)
47u MLCC+30m
0
100
200
300
400
500
600
700
0 0.2 0.4 0.6 0.8 1 1.2
VNRCS(V)
VFB(mV)
Io
1A/DIV
Vo
20mV/DIV
Io
1A/DIV
Vo
50mV/DIV
Io
1A/DIV
Vo
50mV/DIV
Technical Note
5/14
www.rohm.com
2010.05 - Rev.
A
© 2010 ROHM Co., Ltd. All rights reserved.
BD3506F,BD3506EFV
●Block Diagram
◎BD3506F
◎BD3506EFV
Enable
1
4
VCC
VCC
Reference
Block
Thermal
Shutdown
NRCS
6
5
EN
NRCS GND
3
8
7
2
Current
Limit
VCC
UVLO
CL
CL
UVLO
TSD
EN
VIN
Vo1
Vo2
VFB
R2
R1
VIN
Vo
TSD
Reference
Block
Thermal
Shutdown
Current
Limit
CL
EN
13
4
2320
16
10
9
8
7
6
5
15
14
17
VCC
VCC
VCC
UVLO
VCC
CL
UVLO
TSD
TSD
NRCS
GND
R2
R1
FB
Vo1
Vo2
Vo3
Vo4
Vo5
Vo6
Vo
VIN
VIN1
VIN2
EN
NRCS
Technical Note
6/14
www.rohm.com
2010.05 - Rev.
A
© 2010 ROHM Co., Ltd. All rights reserved.
BD3506F,BD3506EFV
●Pin Configration and Pin Function
◎BD3506F
○Pin Configration ○Pin Function
Pin
No.
Pin
Name
PIN FUNCTION
1 EN Enable Pin
2 VIN Input Voltage Pin
3 FB Output Voltage Feedback
4 VCC Power Source
5 GND Ground Pin
6 NRCS
NRCS(Non Rush Current on Start Up)
time setup
7 VO1 VO1 Pin
8 VO2 VO2 Pin
◎BD3506EFV
○Pin Configration ○Pin Function
PIN
No.
PIN
Name
PIN FUNCTION
1
N.C. Non connection
2 GND1 Ground1 Pin
3 GND2 Ground2 Pin
4 NRCS
NRCS(Non Rush Current on Start Up)
time setup
5 VO1 VO1 Pin
6 VO2 VO2 Pin
7 VO3 VO3 Pin
8 VO4 VO4 Pin
9 VO5 VO5 Pin
10 VO6 VO6 Pin
11 N.C. Non connection
12 N.C. Non connection
13 EN Enable Pin
14 VIN1 Input Voltage1 Pin
15 VIN2 Input Voltage2 Pin
16 FB Output Voltage Feedback
17 VCC Power Source
18 N.C. Non connection
19 N.C. Non connection
20 GND3 Ground3 Pin
VIN2
VO1
VO3
VO4
FB
VIN1
EN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
N.C.
GND3
N.C.
N.C.
N.C.
N.C.
GND1
VO2
VO5
VO6
GND2
NRCS
VO1
1
2
3
4
8
7
6
5
EN
VIN
FB
VCC
VO2
NRCS
GND
P1-P3P4-P6P7-P9P10-P12P13-P15

BD3506F-E2

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Description:
LDO Voltage Controllers LDO REG CONTROLLER WITH INTEGRATED FET
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