BD9702T/T-V5-E2_技术文档

Single-chip Type with Built-in FET Switching Regulator Series

Simple Step-down

Switching Regulators

with Built-in Power MOSFET

No.09027EBT01

BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

●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

1.5A

BD9702CP-V5/T/T-V5

3.0A

Output Current

Input Voltage

8 or Vo+3 ～ 36V

300kHz (fixed)

Switching Frequency

External Synchronization

Stand-by Function

Operating Temperature

Package

100kHz (fixed)

110kHz (fixed)

×

○

-40 ～ +85℃

TO252-5/TO220CP-V5/TO220FP-5/TO220FP-5 (V5) TO220CP-V5/TO220FP-5/TO220FP-5 (V5)

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2009.04- Rev.B

1/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Absolute Maximum Ratings (Ta＝25℃)

Parameter

Supply Voltage (VCC-GND)

STBY-GND

Symbol

VCC

V_STBY

V_O

Ratings

Unit

V

36

V

OUT-GND

36

V

INV-GND

V_INV

10

V

BD9701/BD9703

1.5

Maximum Switching Current

Power Dissipation

Iout

Pd

A

BD9702

TO252

TO220

3

0.8 ^(*1)

2^(*2)

W

Operating Temperature

Storage Temperature

Topr

Tstg

-40～+85

-55～+150

℃

*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.

●Operating Conditions(Ta=-40～+85℃)

Limit

Parameter

Symbol

Unit

MIN

TYP

MAX

Input Voltage

Output Voltage

VCC

Vo

8.0 or Vo+3^(*3)

-

35.0

32

V

1.0

*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

Symbol

Unit

Conditions

MIN

TYP

1.0

86

MAX

1.5

-

Output ON Resistance

Efficiency

Ron

η

-

Ω

%

design guarantee

Io＝0.5A design guarantee

Switching Frequency

Load Regulation

fosc

80

-

100

10

120

40

kHz

ΔVOLOAD

ΔVOLINE

Iocp

mV VCC=20V,Io=0.5～1.5A

Line Regulation

-

40

100

-

mV VCC=10～30V,Io=1.0A

Over Current Protection Limit

INV Pin Threshold Voltage

1.6

0.98

-

A

V

VINV

1.00

1.02

INV Pin Threshold Voltage

Thermal Variation

ΔVINV

-

±0.5

-

%

Tj=0～85℃ design guarantee

INV Pin Input Current

IINV

VSTBYON

VSTBYOFF

Istby

-

2.0

-0.3

5

1

-

μA VINV=1.0V

ON

36

0.3

50

12

5

V

STBY Pin

Threshold Voltage

-

V

OFF

STBY Pin Input Current

Circuit Current

25

4

μA STBY=3V

mA

Icc

-

Stand-by Current

Ist

-

0

μA STBY＝0V

This product is not designed to be resistant to radiation.

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2009.04- Rev.B

2/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Electrical Characteristics

○BD9703FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)

Limit

Parameter

Symbol

Unit

Conditions

MIN

TYP

1.0

86

MAX

1.5

-

Output ON Resistance

Efficiency

Ron

η

-

Ω

%

design guarantee

Io＝0.5A design guarantee

Switching Frequency

Load Regulation

fosc

270

-

300

10

330

40

kHz

ΔVOLOAD

ΔVOLINE

Iocp

mV VCC=20V,Io=0.5～1.5A

Line Regulation

-

40

100

-

mV VCC=10～30V,Io=1.0A

Over Current Protection Limit

INV Pin Threshold Voltage

1.6

0.98

-

A

V

VINV

1.00

1.02

INV Pin Threshold Voltage

Thermal Variation

ΔVINV

-

±0.5

-

%

Tj=0～85℃ design guarantee

INV Pin Input Current

IINV

VSTBYON

VSTBYOFF

Istby

-

2.0

-0.3

5

1

-

μA VINV=1.0V

36

0.3

50

12

5

ON

V

STBY Pin

Threshold Voltage

OFF

-

V

STBY Pin Input Current

Circuit Current

25

5

μA STBY=3V

mA

Icc

-

Stand-by Current

Ist

-

0

μA STBY＝0V

●Electrical Characteristics

○BD9702FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)

Limit

Parameter

Symbol

Unit

Conditions

MIN

TYP

0.5

86

MAX

1.5

-

Output ON Resistance

Efficiency

Ron

η

-

Ω

%

design guarantee

Io＝1A design guarantee

Switching Frequency

Load Regulation

fosc

88

-

110

10

132

40

kHz

ΔVOLOAD

ΔVOLINE

Iocp

mV VCC=20V,Io=1～3A

Line Regulation

-

40

100

-

mV VCC=10～30V,Io=1.0A

Over Current Protection Limit

INV Pin Threshold Voltage

3.2

0.98

-

A

V

VINV

1.00

1.02

INV Pin Threshold Voltage

Thermal Variation

ΔVINV

-

±0.5

-

%

Tj=0～85℃ design guarantee

INV Pin Input Current

IINV

VSTBYON

VSTBYOFF

Istby

-

2.0

-0.3

5

1

-

μA VINV=1.0V

ON

36

0.3

50

12

5

V

STBY Pin

Threshold Voltage

-

V

OFF

STBY Pin Input Current

Circuit Current

25

4

μA STBY=3V

mA

Icc

-

Stand-by Current

Ist

-

0

μA STBY＝0V

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2009.04- Rev.B

3/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Characteristic Data

○BD9701FP/CP-V5/T/T-V5

100

90

80

70

60

50

40

6

5

4

3

2

1

0

110

105

100

95

90

-10

10

30

50

70

90

0

1

2

3

4

10

100

1000

OUTPUT CURRENT IOUT : [A]

Fig.2

OUTPUT CURRENT : IOUT[A]

AMBIENT TEMPERATURE : Ta [℃]

Fig.1

Fig.3

fosc-Ta

OCP VCC=20V

EFFICIENCY-LOAD CURRENT

5.100

5.050

5.000

4.950

4.900

5

5.1

4.5

4

VCC=30V

5.05

5

3.5

3

2.5

2

1.5

1

4.95

4.9

VCC=20V

VCC=10V

0.5

0

200

400

600

800

1000

10

15

20

25

30

35

0

10

20

30

40

INPUT VOLTAGE : VCC [V]

OUTPUT CURRENT : IOUT[A]

INPUT VOLTAGE : VCC [V]

Fig.6

Fig.5

Fig.4

CIRCUIT CURRENT-INPUT VOLTAGE

NO LOAD

OUTPUT VOLTAGE-INPUT VOLTAGE

(Vo=5V,Ro=5ohm)

OUTPUT VOLTAGE-LOAD CURRENT

110

105

100

95

3.5

1.020

3

2.5

2

1.010

1.000

0.990

0.980

1.5

1

0.5

0

90

0

0.5

1

1.5

2

0

10

20

30

40

-10

10

30

50

70

90

SWITCHING CURRENT : ISW[A]

INPUT VOLTAGE : VCC [V]

AMBIENT TEMPERATURE : Ta [℃]

Fig.7

Fig.8

Fig.9

VOUT～OUT VOLTAGE-DRAIN CURRENT

fosc-INPUT VOLTAGE

INV THRESHOLD VOLTAGE-Ta

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2009.04- Rev.B

4/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Characteristic Data

○BD9702FP/CP-V5/T/T-V5

6

5

4

3

2

1

0

100

90

80

70

60

50

40

120

115

110

105

100

-10

10

30

50

70

90

0

1

2

3

4

OUTPUT CURRENT : IOUT[A]

5

6

10

100 1000

OUTPUT CURRENT : IOUT[A]

10000

AMBIENT TEMPERATURE : Ta [℃]

Fig.12

fosc-Ta

Fig.11

OCP VCC=20V

Fig.10

EFFICIENCY-LOAD CURRENT

5.10

5.05

5.00

4.95

4.90

5.10

5.05

5.00

4.95

4.90

5

VCC=30V

VCC=20V

4

3

2

1

0

VCC=10V

0

500 1000 1500 2000 2500 3000

OUTPUT CURRENT : IOUT[A]

0

10

20

30

40

10

15

20

25

30

35

INPUT VOLTAGE : VCC [V]

Fig.15

CIRCUIT CURRENT-

Fig.13

Fig.14

OUTPUT VOLTAGE-LOAD CURRENT

OUTPUT VOLTAGE-INPUT VOLTAGE

(Vo=5V,Ro=5ohm)

INPUT VOLTAGE NO LOAD

1.02

1.01

1.00

0.99

0.98

120

115

110

105

100

2.0

1.5

1.0

0.5

0.0

0

0.5

1

1.5

2

2.5

3

-10

10

30

50

70

90

0

10

20

30

40

INPUT VOLTAGE : VCC [V]

AMBIENT TEMPERATURE : Ta [℃]

SWITCHING CURRENT : ISW[A]

Fig.18

Fig.17

fosc-INPUT VOLTAGE

Fig.16

INV THRESHOLD VOLTAGE-Ta

VOUT～OUT VOLTAGE-DRAIN CURRENT

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2009.04- Rev.B

5/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Characteristic Data

○BD9703FP/CP-V5/T/T-V5

100

90

80

70

60

50

40

6

5

4

3

2

1

0

330

315

300

285

270

0

1

2

3

4

10

100

1000

-10

10

30

50

70

90

OUTPUT CURRENT : IOUT[A]

AMBIENT TEMPERATURE : Ta [℃]

Fig.20

Fig.19

Fig.21

OCP VCC=20V

EFFICIENCY-LOAD CURRENT

fosc-Ta

5

5.10

5.05

5.00

4.95

4.90

5.1

4

3

2

1

0

VCC=30V

5.05

5

VCC=20V

VCC=10V

4.95

4.9

10

15

20

25

INPUT VOLTAGE : VCC [V]

30

35

0

10

20

30

40

0

200

400

600

800

1000

INPUT VOLTAGE : VCC [V]

OUTPUT CURRENT : IOUT[A]

Fig.23

Fig.24

Fig.22

OUTPUT VOLTAGE-INPUT

VOLTAGE (Vo=5V,Ro=5ohm)

CIRCUIT CURRENT-INPUT

VOLTAGE NO LOAD

OUTPUT VOLTAGE-LOAD CURRENT

1.5

1.02

1.01

1.00

0.99

0.98

330

315

300

285

270

1

0.5

0

0.2 0.4 0.6 0.8

1

1.2 1.4 1.6

-10

10

30

50

70

90

0

10

20

30

40

SWITCHING CURRENT : ISW[A]

AMBIENT TEMPERATURE : Ta [℃]

INPUT VOLTAGE : VCC [V]

Fig.25

VOUT～OUT

VOLTAGE-DRAIN CURRENT

Fig.27

Fig.26

fOSC-INPUT VOLTAGE

INV THRESHOLD VOLTAGE-Ta

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2009.04- Rev.B

6/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Block Diagram

BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5, BD9702CP-V5/T/T-V5

VCC

1

TO252-5 Package Dimensions (mm)

VREF

PWM COMP

DRIVER

OSC

STBY

5

STBY

CTL

LOGIC

OUT

2

OCP

TSD

INV

4

Error AMP

TO220CP-V5 Package Dimensions (mm)

3

GND

Fig.28 Block Diagram

●Pin Description

Pin No.

Pin Name

Function

1

VCC

OUT

GND

INV

Input Power Supply Pin

Internal Pch FET Drain Pin

Ground

2

3,FIN(*2)

4

5

Output Voltage Feedback Pin

ON/OFF Control Pin

STBY

(*2)FIN is assigned in the case of TO252-5.

TO220FP-5 Package Dimensions (mm)

TO220FP-5(V5) Package Dimensions (mm)

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2009.04- Rev.B

7/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Block Function Explanations

・VREF

Generates the regulated voltage from VCC input, compensated for temperature.

・OSC

Generates the triangular wave oscillation frequency using an internal resistors and capacitor. Used for PWM comparator input.

・Error AMP

This block, via the INV pin, detects the resistor-divided output voltage, compares this with the reference voltage, then

amplifies and outputs the difference.

・PWM COMP

Outputs PWM signals to the Driver block, which converts the error amp output voltage to PWM form.

・DRIVER

This push-pull FET driver powers the internal Pch MOSFET, which accepts direct PWM input.

・STBY

Controls ON/OFF operation via the STBY pin. The output is ON when STBY is High.

・Thermal Shutdown (TSD)

This circuit protects the IC against thermal runaway and damage due to excessive heat. A thermal sensor detects the

junction temperature and switches the output OFF once the temperature exceeds a threshold value (175deg). Hysteresis

is built in (15deg) in order to prevent malfunctions due to temperature fluctuations.

・Over Current Protection (OCP)

The OCP circuit detects the voltage difference between VCC and OUT by measuring the current through the internal Pch

MOSFET and switches the output OFF once the voltage reaches the threshold value. The OCP block is a self-recovery

type (not latch).

●Timing Chart

OSC

(Internal Oscillation Wave) Error AMP OUTPUT

VCC PIN

VOLTAGE WAVE

OUTPIN

VOLTAGE WAVE

OUTPUT

VOLTAGE WAVE

Fig.29 Timing Chart

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2009.04- Rev.B

8/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Notes for PCB layout

C5

R1 : 4kO

R2 : 1kO

4

5

2

INV

STBY

OUT

L1

VCC

5.0V

1

GND

3

C4

C2

C1

C3

D1

Fig.30 Layout

• Place capacitors between VCC and Ground, and the Schottky diode as close as possible to the IC to reduce noise and

maximize efficiency.

• Connect resistors between INV and Ground, and the output capacitor filter at the same Ground potential in order to stabilize

the output voltage.

●Application component selection and settings

Inductor L1

If the winding resistance of the choke coil is too high, the efficiency may deteriorate.

As the overcurrent protection operates over minimum 1.6A (BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5) or 3.2A

minimum (BD9701CP-V5/T/T-V5), attention must be paid to the heating of the inductor due to overload of short-circulated

load.

Note that the current rating for the coil should be higher than I_OUT(MAX)＋⊿IL_.Iout (MAX): maximum load current

If you flow more than maximum current rating, coil will become overload, and cause magnetic saturation, and those

account for efficiency deterioration. Select from enough current rating of coil which doesn’t over peak current.

VOUT

(VCC-VOUT)

L1

1

×

⊿IL_.=

fosc

VCC

L1:inductor value, VCC:maximum input voltage, VOUT:output voltage, ⊿IL:coil ripple current value, fosc:oscillation

frequency

Shottky Barrier Diodes D1

A Schottky diode with extremely low forward voltage should be used. Selection should be based on the following

guidelines regarding maximum forward current, reverse voltage, and power dissipation:

・The maximum current rating is higher than the combined maximum load current and coil ripple current (⊿I_L).

・The reverse voltage rating is higher than the VIN value.

・Power dissipation for the selected diode must be within the rated level.

The power dissipation of the diode is expressed by the following formula:

Pdi=Iout(MAX)×Vf×(1-VOUT/VCC)

Iout (MAX): maximum load current, Vf: forward voltage, VOUT: output voltage, VCC: input voltage

Capacitor C1,C2,C3,C4,C5

As large ripple currents flow across C1 and C3 capacitors, high frequency and low impedance capacitor for a switching

regulator must be used. The ceramic capacitor C2 must be connected. If not, noise may cause an abnormal operation. If

the ripple voltage of input and output is large, C4 selected among ceramic , tantalum and OS capacitor with low ESR may

decrease the ripple, however if the only low ESR capacitor is used, an oscillation or unstable operation may be caused.

C5 is the capacitor for phase compensation and normally not used. If you need to improve the stability of feedback

network, connect C5 between INV and OUTPUT.

Feed back resistance R1,R2

The offset of output voltage is determined by both Feed back resistance and INV pin input current.

VOUT=(R1+R2) VINV/R2 (VINV pin Threshold Votage)

If Feed back resistance is high, the setting of output voltage will be move.

Recommended : Resistance between INV pin and GND = less than 10kΩ.

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2009.04- Rev.B

9/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Recommended Circuit

+

C1

C2

VCC

1

L1

OUT

5.0V

2

4

+

D1

C4

C3

STBY

5

C5

R1 : 4kΩ

R2 : 1kΩ

INV

3

GND

Fig.31 Recommended Circuit Output Voltage 5V : Application cicuit example

(BD9701FP/CP-V5/T/T-V5)

＜Recommended Components (Example)＞

Inductor

L1＝100μH

D1

:CDRH127/LD (sumida)

:RB050LA-40 (ROHM)

Schottky Diode

Capacitor

C1＝100μF(50V)

C2＝OPEN

C3＝220μF(25V)

C4＝OPEN

C5＝OPEN

:Al electric capacitor UHD1H101MPT (nichicon)

:Al electric capacitor UHD1E221MPT (nichicon)

＜Recommended Components example 2＞

Inductor

L1＝100μH

:CDRH127/LD (sumida)

Schotky Diode

Capacitor

D1

:RB050LA-40 (ROHM)

C1＝220μF(25V)

C2＝1.0μF(50V)

C3＝470μF(16V)

C4＝150μF(20V)

C3＝OPEN

:Al electric capacitor UVR1H221MPA (nichicon)

:ceramic cap UMK212F105ZG (TAIYO YUDEN)

:Al electric capacitor UVR1E471MPA (nichicon)

:OS capacitor 20SVP150M (SANYO)

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2009.04- Rev.B

10/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

(BD9703FP/CP-V5/T/T-V5)

＜Recommended Components＞

Inductor

L1＝47μH

:CDRH127/LD (sumida)

:RB050LA-40 (ROHM)

Schotky Diode

Capacitor

D1

C1＝100μF(50V)

C2＝2.2μF(50V)

C3＝470μF(25V)

C4＝OPEN

C3＝OPEN

:Al electric capacitor UHD1H101MPT (nichicon)

:ceramic cap CM43X7R225K50A (KYOCERA)

:Al electric capacitor UHD1E471MPT (nichicon)

(BD9702CP-V5/T/T-V5)

＜Recommended Components＞

Inductor

L1＝47μH

:CDRH127/LD (sumida)

Schotky Diode

Capacitor

D1

:RB050LA-40 (ROHM)

C1＝1000μF(50V)

C2＝OPEN

C3＝1000μF(25V)

C4＝OPEN

C3＝OPEN

:Al electric capacitor UHD1H102MPT (nichicon)

:Al electric capacitor UHD1E102MPT (nichicon)

●Test Circuit

GND

3

Vcc

1

OUT

2

INV

4

STBY

5

SW2

SW4

SW5

+

Icc

A

ISTB

A

I INV

INV

1kΩ

2kΩ

Vcc

V

VSTB

+

SW6

f

V

Vo

Io

Fig.32 Input Output Measurement Circuit

11/16

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2009.04- Rev.B

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●I/O Equivalent Circuit

Pin 1 (VCC), Pin 3 (GND)

Pin 2 (OUT)

Pin 4 (INV)

Pin 5 (STBY)

VC

VCC

STB

VCC

140KΩ

60KΩ

300Ω

INV

OUT

GND

70KΩ

Fig.33Input Output Equivalent Circuit

●Notes for use

1. Absolute Maximum Ratings

Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may

result in IC deterioration or damage. Assumptions should not be made regarding the state of the IC (short mode or open

mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the

IC in a special mode where the absolute maximum ratings may be exceeded is anticipated.

2. GND voltage

Ensure a minimum GND pin potential in all operating conditions. In addition, ensure that no pins other than the GND pin

carry a voltage lower than or equal to the GND pin, including during actual transient phenomena.

3. Thermal design

Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.

4. Inter-pin shorts and mounting errors

Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in

damage to the IC. Shorts between output pins or between output pins and the power supply and GND pin caused by the

presence of a foreign object may result in damage to the IC.

5. Operation in strong electromagnetic field

Operation in a strong electromagnetic field may cause malfunction.

6. Thermal shutdown circuit (TSD circuit)

This IC incorporates a built-in thermal shutdown circuit (TSD circuit). The TSD circuit is designed only to shut the IC off to

prevent runaway thermal operation. Do not continue to use the IC after operating this circuit or use the IC in an

environment where the operation of the thermal shutdown circuit is assumed.

7. Testing on application boards

When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress.

Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure,

and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or

removing it from a jig or fixture during the inspection process.

www.rohm.com

2009.04- Rev.B

12/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

8. IC pin input

This IC is a monolithic IC which (as below) has P+ substrate and betweenthe various pin. A P-N junction is formed from

this P layer of each pin. For example the relation between each potential is as follows. (When GND > PinB and GND >

PinA, the P-N junction operates as a parasitic diode.) Parasitic diodes can occur inevitably in the structure of the IC. The

operation of parasitic diodes can result in mutual interference among circuits as well as operation faults and physical

damage. Accordingly, you must not use methods by which parasitic diodes operate, such as applying a voltage that is

lower than the GND(P substrate)voltage to an input pin.

Transistor (NPN)

B

Resistance

(PinA)

(PinB)

Ｃ

E

GND

N

P^＋

P

N

Ｎ

N

P substrate

GND

Parasitic diode

ＧＮＤ

Parasitic diode

(PinB)

(PinA)

C

B

E

Parasitic diode

GND

Other adjacent components

Parasitic diode

Fig.34 Simplified structure of a Bipolar IC

9. Common impedance

Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple

as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and

capacitance).

10. Pin short and mistake fitting

Do not short-circuit between OUT pin and VCC pin, OUT pin and GND pin,

or VCC pin and GND pin. When soldering the IC on circuit board,

please be unusually cautious about theorientation and the position of the IC.

Bypass diode

Back current prevention diode

VCC

Output Pin

Fig.35

www.rohm.com

2009.04- Rev.B

13/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

11. Application circuit

Although we can recommend the application circuits contained herein with a relatively high degree of confidence, we ask

that you verify all characteristics and specifications of the circuit as well as performance under actual conditions. Please

note that we cannot be held responsible for problems that may arise due to patent infringements or noncompliance with

any and all applicable laws and regulations.

12. Operation

The IC will turn ON when the voltage at the STBY pin is greater than 2.0V and will switch OFF if under 0.3V. Therefore, do

not input voltages between 0.3V and 2.0V. Malfunctions and/or physical damage may occur.

●Power Dissipation

TO252-S

(4) 4.80W

5

4

(1) No heat sink

(2) 2layer PCB

(Copper laminate area 15 mm×15mm)

(3) 2layer PCB

(3) 3.50W

(Copper laminate area 70 mm×70mm)

(4) 4layer PCB

3

2

(Copper laminate area 70 mm×70mm)

(2) 1.85W

(1) 0.80W

1

0

25

50

75 85 100

125

150

AMBIENT TEMPERATURE : Ta[°C]

Fig.36

TO220

15

10

(1) No heat sink

(3) 11.0W

(2) Aluminum heat sink

50×50×2 (mm³)

(3) Aluminum heat sink

100×100×2 (mm³)

(2) 6.5W

(1) 2.0W

5

0

25

50

75

100

125

150

AMBIENT TEMPERATURE : Ta[°C]

Fig.37

www.rohm.com

2009.04- Rev.B

14/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

●Ordering part number

B

D

9

7

0

1

F

P

-

E

2

Part No.

Package

FP : TO252-5

CP-V5 : TO220CP-V5

T/T-V5 : TO220FP-5(V5)

Packaging and forming specification

E2: Embossed tape and reel

None:Tray,Tube

9701=36V/1.5A

9702=36V/1.5A

9703=36V/3.0A

●Package specifications

TO252-5

Tape

Embossed carrier tape

2000pcs

2.3 0.2

6.5 0.2

Quantity

0.5 0.1

C0.5

+0.2

5.1

-0.1

E2

Direction

of feed

The direction is the 1pin of product is at the lower left when you hold

reel on the left hand and you pull out the tape on the right hand

(

)

FIN

3

1

2

4 5

0.5 0.1

1.0 0.2

0.5

1.27

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

1pin

Reel

(Unit : mm)

∗

TO220FP-5

+0.3

−0.1

+0.3

−0.1

10.0

4.5

Container

Quantity

Tube

+0.3

+0.2

7.0

φ

2.8

3.2 0.1

−0.1

500pcs

Direction of feed Direction of products is fixed in a container tube

1.2

0.8

1.778

0.5 0.1

2.85

1

2 3 4 5

Order quantity needs to be multiple of the minimum quantity.

(Unit : mm)

∗

www.rohm.com

2009.04- Rev.B

15/16

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5

Technical Note

TO220FP-5(V5)

+ 0.3

− 0.1

+0.3

−0.1

10.0

4.5

Container

Quantity

Tube

+0.2

−0.1

+ 0.3

φ

2.8

3.2 0.1

7.0

− 0.1

500pcs

Direction of feed Direction of products is fixed in a container tube

1.2

0.8

0.5 0.1

(2.85)

4.25

8.15

1.778

1

2 3 4 5

(Unit : mm)

Order quantity needs to be multiple of the minimum quantity.

∗

TO220CP-V5

4.5 0.1

φ3.2 0.1

+0.3

+0.2

2.8

Tape

Embossed carrier tape

500pcs

10.0

-

0.1

-

0.1

Quantity

E2

Direction

of feed

The direction is the 1pin of product is at the lower left when you hold

(

)

reel on the left hand and you pull out the tape on the right hand

0.82 0.1

0.92

0.42 0.1

1.58

1.444

1.778

(2.85)

4.12

Direction of feed

1pin

Reel

(Unit : mm)

Order quantity needs to be multiple of the minimum quantity.

∗

www.rohm.com

2009.04- Rev.B

16/16

Notice

N o t e s

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content speciﬁed herein is subject to change for improvement without notice.

The content speciﬁed herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the speciﬁcations,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information speciﬁed in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information speciﬁed herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products speciﬁed in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, ofﬁce-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products speciﬁed in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, ﬁre or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, ﬁre control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

may result in a direct threat to human life or create a risk of human injury (such as a medical

instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,

fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of

any of the Products for the above special purposes. If a Product is intended to be used for any

such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology speciﬁed herein that may

be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to

obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

www.rohm.com

R0039

A


型号：	BD9702T/T-V5-E2
厂家：	ROHM
描述：	Switching Regulator, 3A, 132kHz Switching Freq-Max, BICMOS, ROHS COMPLIANT, TO-220, 5 PIN 信息通信管理
文件：	总17页 (文件大小：496K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD9702T/T-V5-E2 [ROHM]

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