BP5310A 查看數據表（PDF） - ROHM Semiconductor

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BP5310A

PCMCIA / Flash memory power supply

ROHM Semiconductor 

(2) Pull-down of VPP

VPP

BP5310A

BP5310A

1

2

3

4

+

C2

+

C3

7

8

9

Be sure to use

fuse for safety

+

VCC (5V)

C1

Fig.3

The OFF output is pulled down through an effective resistance of 30kW

ON / OFF CTL

Operation notes

(1) Place I / O external capacitors as near as possible to the connection pins. In particular, make sure to

minimize the impedance between the input-side capacitor (C1) and pin 9. (Reference Value : A length less

than 50mm for a copperfoil of 1.0mm wide and 35µm thickness.)

(2) Avoid frequent switching using the ON / OFF CTL pin (five times per second at the maximum).

(3) The module has a built-in shorted-circuit protection circuit. Shorted-circuiting is assumed if the output

voltage does not reach 4.2V (typical) in 40ms (typical), and the protection circuit starts to operate.

When setting the output capacitor, we recommend considering the flash memory capacitance within

the IC card and making the output voltage to reach 8V or more in less than 20ms.

External dimensions (Units : mm)

26.5Max.

6.0Max.

Marked

side

1

2

3

P=2.54±0.2

1.3±1.2

4

0.5±0.1

1.3±0.2

2.54×8=20.32

7

8

9

∗Pins 5 and 6 are not installed.

SIP9

0.25±0.05

4/5

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