Single-chip Type with Built-in FET Switching Regulator Series
Simple Step-down
Switching Regulators
with Built-in Power MOSFET
BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
No.09027EBT01
●Description
The BD9701/BD9703/BD9702 are single-channel step-down switching regulator capable of PWM operation.
The Pch MOS FET is built in for high efficiency in small load area.Lower electricity consumption of operating current 4mA
(Typ) and stand-by current 0uA(Typ) is realized by adopting Bi-CMOS process.
●Features
1) Maximum switching current: 1.5A(BD9701/BD9703), 3A(BD9702)
2) Built-in Pch FET ensures high efficiency
3) Output voltage adjustable via external resistors
4) High switching frequency: 100kHz (BD9701), 300kHz(BD9703), 110kHz(BD9702)
5) Overcurrent and thermal shutdown protection circuits built in
6) ON/OFF control via STBY pin
7) Small surface mount TO252-5 package (only BD9701FP, BD9703FP)
●Applications
TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment,
AV products, office equipment, industrial devices, and more.
●Line
Up
BD9701FP/CP-V5/T/T-V5 BD9703FP/CP-V5/T/T-V5
Output Current
Input Voltage
Switching Frequency
External Synchronization
Stand-by Function
Operating Temperature
Package
100kHz (fixed)
1.5A
8 or Vo+3
½
36V
300kHz (fixed)
×
○
-40
½
+85℃
TO252-5/TO220CP-V5/TO220FP-5/TO220FP-5 (V5) TO220CP-V5/TO220FP-5/TO220FP-5 (V5)
BD9702CP-V5/T/T-V5
3.0A
110kHz (fixed)
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
●Absolute
Maximum Ratings (Ta＝25℃)
Parameter
Supply Voltage (VCC-GND)
STBY-GND
OUT-GND
INV-GND
BD9701/BD9703
Maximum Switching Current
BD9702
Power Dissipation
Operating Temperature
Storage Temperature
*1 Without external heat sink, the power dissipation reduces by 6.4mW/℃ over 25℃.
*2 Without external heat sink, the power dissipation reduces by 16.0mW/℃ over 25℃.
Reduced by 160mW/℃, when mounted on Infinity size heatsink.
Technical Note
Symbol
VCC
V
STBY
V
O
V
INV
Iout
Ratings
36
36
36
10
1.5
Unit
V
V
V
V
A
3
0.8
(*1)
Pd
2
(*2)
-40½+85
-55½+150
W
℃
℃
TO252
TO220
Topr
Tstg
●Operating
Conditions(Ta=-40½+85℃)
Parameter
Input Voltage
Output Voltage
Symbol
V
CC
Vo
Limit
MIN
8.0 or Vo+3
(*3)
1.0
TYP
-
-
MAX
35.0
32
Unit
V
V
*3The minimum value of an input voltage is the higher either 8.0V or Vo+3
●Electrical
Characteristics
○BD9701FP/CP-V5/T/T-V5
(Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Limit
Parameter
Output ON Resistance
Efficiency
Switching Frequency
Load Regulation
Line Regulation
Over Current Protection Limit
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
STBY Pin
Threshold Voltage
STBY Pin Input Current
Circuit Current
Stand-by Current
This product is not designed to be resistant to radiation.
Symbol
MIN
Ron
η
fosc
ΔVOLOAD
ΔVOLINE
Iocp
VINV
ΔVINV
IINV
ON
OFF
VSTBYON
VSTBYOFF
Istby
Icc
Ist
-
-
80
-
-
1.6
0.98
-
-
2.0
-0.3
5
-
-
TYP
1.0
86
100
10
40
-
1.00
±0.5
1
-
-
25
4
0
MAX
1.5
-
120
40
100
-
1.02
-
-
36
0.3
50
12
5
Unit
Ω
%
kHz
mV
mV
A
V
%
μA
V
V
μA
mA
μA
Conditions
design guarantee
Io＝0.5A design guarantee
VCC=20V,Io=0.5½1.5A
VCC=10½30V,Io=1.0A
Tj=0½85℃ design guarantee
VINV=1.0V
STBY=3V
STBY＝0V
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© 2009 ROHM Co., Ltd. All rights reserved.
2/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
●Electrical
Characteristics
○BD9703FP/CP-V5/T/T-V5
(Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Limit
Parameter
Output ON Resistance
Efficiency
Switching Frequency
Load Regulation
Line Regulation
Over Current Protection Limit
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
STBY Pin
Threshold Voltage
STBY Pin Input Current
Circuit Current
Stand-by Current
ON
OFF
Symbol
MIN
Ron
η
fosc
ΔVOLOAD
ΔVOLINE
Iocp
VINV
ΔVINV
IINV
VSTBYON
VSTBYOFF
Istby
Icc
Ist
-
-
270
-
-
1.6
0.98
-
-
2.0
-0.3
5
-
-
TYP
1.0
86
300
10
40
-
1.00
±0.5
1
-
-
25
5
0
MAX
1.5
-
330
40
100
-
1.02
-
-
36
0.3
50
12
5
Ω
%
kHz
mV
mV
A
V
%
μA
V
V
μA
mA
μA
STBY=3V
Unit
Technical Note
Conditions
design guarantee
Io＝0.5A design guarantee
VCC=20V,Io=0.5½1.5A
VCC=10½30V,Io=1.0A
Tj=0½85℃ design guarantee
VINV=1.0V
STBY＝0V
●Electrical
Characteristics
○BD9702FP/CP-V5/T/T-V5
(Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Limit
Parameter
Output ON Resistance
Efficiency
Switching Frequency
Load Regulation
Line Regulation
Over Current Protection Limit
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
STBY Pin
Threshold Voltage
STBY Pin Input Current
Circuit Current
Stand-by Current
ON
OFF
Symbol
MIN
Ron
η
fosc
ΔVOLOAD
ΔVOLINE
Iocp
VINV
ΔVINV
IINV
VSTBYON
VSTBYOFF
Istby
Icc
Ist
-
-
88
-
-
3.2
0.98
-
-
2.0
-0.3
5
-
-
TYP
0.5
86
110
10
40
-
1.00
±0.5
1
-
-
25
4
0
MAX
1.5
-
132
40
100
-
1.02
-
-
36
0.3
50
12
5
Ω
%
kHz
mV
mV
A
V
%
μA
V
V
μA
mA
μA
STBY＝0V
STBY=3V
Tj=0½85℃ design guarantee
VINV=1.0V
VCC=20V,Io=1½3A
VCC=10½30V,Io=1.0A
design guarantee
Io＝1A design guarantee
Unit
Conditions
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© 2009 ROHM Co., Ltd. All rights reserved.
3/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
●Characteristic
Data
○BD9701FP/CP-V5/T/T-V5
Technical Note
100
6
110
OUTPUT VOLTAGE : VO [V]
OSC FREQUENCY : FOSC [½Hz]
90
5
4
3
2
1
0
EFFICIENCY η: [%]
105
80
70
60
50
40
10
100
1000
100
95
90
-10
10
30
50
70
90
0
1
2
3
4
OUTPUT CURRENT : IOUT[A]
OUTPUT CURRENT IOUT : [A]
Fig.1
EFFICIENCY-LOAD CURRENT
Fig.2
OCP VCC=20V
AMBIE NT T E MPE RAT URE : T a [℃ ]
Fig.3
fosc-Ta
5.1
5.100
5
4.5
OUTPUT VOLTAGE : VO [V]
OUTPUT VOLTAGE : VO [V]
5.05
VCC=30
V
5.050
CIRCUIT CURRENT ; [mA]
4
3.5
3
2.5
2
1.5
1
0.5
5
5.000
4.95
VCC=10
V
VCC=20
V
4.950
4.9
0
200
400
600
800
1000
4.900
0
10
20
30
40
0
10
15
20
25
30
35
OUTPUT CURRENT : IOUT[A]
INPUT VOLTAGE : VCC [V]
INPUT VOLTAGE : VCC [V]
Fig.4
OUTPUT VOLTAGE-LOAD CURRENT
Fig.5
OUTPUT VOLTAGE-INPUT VOLTAGE
(Vo=5V,Ro=5ohm)
110
Fig.6
CIRCUIT CURRENT-INPUT VOLTAGE
NO LOAD
1.020
3.5
2.5
2
1.5
1
0.5
0
0
0.5
1
1.5
2
105
INV THRESHOLD VOLTAGE : VINV[V]
OUTPUT VOLTAGE : VDS[V]
3
OSC FREQUENCY : FOSC [½Hz]
1.010
100
1.000
95
0.990
90
0
10
20
30
40
0.980
-10
10
30
50
70
90
SWITCHING CURRENT : ISW[A]
INPUT VOLTAGE : VCC [V]
AMBIENT TEMPERATURE : Ta [℃]
Fig.7
VOUT½OUT VOLTAGE-DRAIN CURRENT
Fig.8
fosc-INPUT VOLTAGE
Fig.9
INV THRESHOLD VOLTAGE-Ta
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© 2009 ROHM Co., Ltd. All rights reserved.
4/16
2009.04- Rev.B
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
●Characteristic
Data
○BD9702FP/CP-V5/T/T-V5
Technical Note
100
6
120
[kHz] OSC FREQUENCY : FOSC
OUTPUT VOLTAGE : VO [V]
90
5
4
3
2
1
0
EFFICIENCY η: [%]
80
70
60
50
40
10
115
110
105
OUTPUT CURRENT : IOUT[A]
100
1000
10000
0
OUTPUT CURRENT : IOUT[A]
1
2
3
4
5
6
100
- 10
10
30
50
70
90
AMBIENT TEMPERATURE : Ta [℃]
Fig.10
EFFICIENCY-LOAD CURRENT
Fig.11
OCP VCC=20V
Fig.12
fosc-Ta
5.10
5.10
5
OUTPUT VOLTAGE : VO [V]
OUTPUT VOLTAGE : VO [V]
VCC=30V
5.05
5.05
VCC=20V
5.00
CIRCUIT CURRENT ; [mA]
0
10
20
30
40
4
3
5.00
2
4.95
VCC=10V
4.95
1
4.90
0
500
1000
1500
2000
2500
3000
4.90
0
OUTPUT CURRENT : IOUT[A]
INPUT VOLTAGE : VCC [V]
10
15
20
25
30
35
INPUT VOLTAGE : VCC [V]
Fig.13
OUTPUT VOLTAGE-LOAD CURRENT
Fig.14
OUTPUT VOLTAGE-INPUT VOLTAGE
(Vo=5V,Ro=5ohm)
120
Fig.15
CIRCUIT CURRENT-
INPUT VOLTAGE NO LOAD
1.02
2.0
INV THRESHOLD VOLTAGE : VINV[V]
OSC FREQUENCY : FOSC [½Hz]
OUTPUT VOLTAGE : VDS[V]
1.5
115
1.01
1.0
110
1.00
0.5
105
0.99
0.0
0
0.5
1
1.5
2
2.5
3
100
0
10
20
30
40
0.98
-10
10
30
50
70
90
SWITCHING CURRENT : ISW[A]
INPUT VOLTAGE : VCC [V]
AMBIENT TEMPERATURE : Ta [℃]
Fig.16
VOUT½OUT VOLTAGE-DRAIN CURRENT
Fig.17
fosc-INPUT VOLTAGE
Fig.18
INV THRESHOLD VOLTAGE-Ta
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
5/16
2009.04- Rev.B
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