Technical Note

BH□□PB1WHFV Series

7/10

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2011.01 - Rev.B

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0.01

0.1

1

10

100

0

50

100

150

Output Current Ｉｏ （mA)

Stable region

●

Input Output capacitors

It is recommended to insert bypass capacitors between input and GND pins, positioning them as close to the pins as

possible. These capacitors will be used when the power supply impedance increases or when long wiring paths are used, so

they should be checked once the IC has been mounted. Ceramic capacitors generally have temperature and DC bias

characteristics. When selecting ceramic capacitors, use X5R or X7R, or better models that offer good temperature and DC

bias characteristics and high tolerant voltages.

Typical ceramic capacitor characteristics

●

Output capacitors

Mounting input capacitor between input pin and GND(as close to pin as possible), and also output capacitor between output

pin and GND(as close to pin as possible) is recommended. The input capacitor reduces the output impedance of the voltage

supply source connected to the VCC. The higher value the output capacitor goes the more stable the whole operation

becomes. This leads to high load transient response. Please confirm the whole operation on actual application board.

Generally, ceramic capacitor has wide range of tolerance, temperature coefficient, and DC bias characteristic. And also its value goes

lower as time progresses. Please choose ceramic capacitors after obtaining more detailed data by asking capacitor makers.

0

20

40

60

80

100

120

01

2

3

4

DC bias Vdc (V)

70

75

80

85

90

95

100

0

1

234

DC bias Vdc (V)

0

20

40

60

80

100

120

-25

0

25

50

75

Temp[℃]

10V

rated voltage

50 V rated voltage

16 V rated voltage

10 V

rated voltage

Fig.28 Capacitance vs Bias

(Y5V)

Fig.29 Capacitance vs Bias

(X5R, X7R)

Fig.30 Capacitance vs Temperature

(X5R, X7R, Y5V)

Fig.31 Stable Operation Region (Example)

Ta = +25°C

BH□□PB1WHFV

16 V rated voltage

50 V rated voltage

X7R

X5R

Y5V