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BP5038A1

AC/DC converter

ROHM Semiconductor 

AC/DC converter

AC100V input, 5V/30mA output

BP5038A1

Absolute Maximum Ratings

Parameter

Input voltage

Output current

ESD endurance

Operating temperature range

Storage temperature range

Symbol

Vi

Io

Vsurge

Topr

Tstg

Limits

170

30

2

−20 to +80

−20 to +85

Unit

V

mApk

kV

°C

°C

Dimensions (Unit : mm)

18.0MAX.

9.1MAX.

3.3MAX

1

456

1 . 3 ±0 . 2

0 . 5 ±0 . 1

2.54×5=12.7

P = 2 . 5 4 ±0 . 2

0 . 2 5 ±0 . 0 5

3.0MAX.

6.1MAX.

Electrical Characteristics

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Input voltage range

Vi 113 141 170 V DC(80 to 120VAC)

Output voltage

Vo

4.7 5.0 5.3

V Vi=141V, Io=15mA

Output current

Io

0

−

30 mA Vi=141V

∗1

Line regulation

Vr

−

0.1 0.3

V Vi=113 to 170V, Io=15mA

Load regulation

Vl

− 0.15 0.3

V Vi=141V, Io=0 to 15mA

Output ripple voltage Vp

− 0.05 0.15 Vp-p Vi=141V, Io=15mA

Power conversion efficiency η

25 33

−

% Vi=141V, Io=30mA

∗1 Maximum output current varies depending on ambient temperature ; please refer to derating curve.

Application circuit

BP5038A1

Pin No.

Function

1 Input terminal Vi(141VDC)

2 Skip

3 Skip

4 COMMON

5 COMMON

6 Output terminal Vo(5V)

1

456

FUSE

D1

R1

0.5A

1SR35−400A 10Ω1/4W

Output

+5V

Input

AC100V

50Hz/60Hz

ZNR + C1

C2

220V − 10µF/200V 0.1µF

+ C3

− 100µF/50V

Be sure to use fuse for safety.

For actual usage, Please kindly evaluate and confirm our part mounted in your product,

Especially, Please make sure to confirm whether the load current exceed Max. rated current

by using the current probe.

External components setting

FUSE: Fuse

Please make sure to use quick acting fuse (0.5A)

C1: Input capacitor

Above 200V, 3.3 to 22µF

Ripple current 0.13Arms above

C2: Noise removal capacitor

Above 200V, 0.1 to 0.22µF

Film capacitor or Ceramic capacitor

Reduce the noise terminal voltage.

The constant value should be evaluated in the product.

C3: Output capacitor

Above 25V, 100 to 470µF, Low impedance

ESR : 0.39Ω Max.

Ripple current 0.1Arms above

Impedance of capacitor effects the output ripple voltage.

R1: Noise removal resistor Resistance : 10 to 22Ω, Power : More than 1/4Ω

D1: Rectifier diode

Use a rectifying diode with the peak reverse voltage of 400V or higher,

the average rectification current of 0.5A or larger and the peak surge current

of 20A or larger. When using an input capacitor of a large capacity, choose

a component that endures the inrush current on power-up.

This product is compatible with full-wave rectification.

ZNR: Varistor

Varistor must be used. It protects this part from lightning surge and static

electricity.

Derating Curve

Derating Curve

40

35

30

25

20

15

Operation Range

10

5

0

-30 -20 -10 0 10 20 30 40 50 60 70 80 90

Ambient Temperature Ta(°C)

Switching Frequency

Switching Frequency

(Ta=25°C, Vi=141V)

60

50

40

30

20

10

0

0 5 10 15 20 25 30

Output Current Io(mA)

Conversion Efficiency

Conversion Efficiency

(Ta=25°C, Vi=141V)

40

35

30

25

20

25% Min−Line

15

10

5

0

0 5 10 15 20 25 30

Output Current Io(mA)

Load Regulation

5.3

5.2

5.1

5.0

4.9

4.8

4.7

0

Load Regulation

(Ta=25°C, Vi=141V)

5 10 15 20 25 30

Output Current Io(mA)

Surface Temperature Rising

Surface Temperature Rising

(Ta=25°C, Vi=141V)

50

40

30

20

10

0

0 5 10 15 20 25 30

Output Current Io(mA)

Rev.A

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