Rohm BP5320 Power supply pcmcia / flash memory Datasheet

Regulator ICs
Power supply PCMCIA / flash
memory
BP5320
The BP5320 is a DC / DC converter for supplying power to PCMCIA flash memory. From a power supply (+5V) for
PCMCIA operations, the IC supplies a voltage for programming operations (+12V). Compact and thin surface-mounted
package with embossing tape for automatic mounting.
Applications
Personal computers, CD-ROM players, portable information devices, and other PCMCIA-slot equipped devices
Features
1) Designed to provide power to PCMCIA programming
operations.
2) The 5V operating voltage is same as the IC memory
card operating voltage.
3) The large current enables power to be supplied to
sound ICs.
4) Compact and thin SMD package.
5) Supplied with embossing tape for automatic mounting by the mounter.
6) Built-in short-circuit protection circuit.
Absolute maximum ratings (Ta=25C)
Block diagram
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Regulator ICs
Electrical characteristics (unless otherwise noted, Ta=25C and VCTL=5V)
Measurement circuit
Pin descriptions
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BP5320
Regulator ICs
BP5320
Application example
(1) Flash memory that requires 5V for reading
(2)
Pull-down of VP–P
The OFF output is pulled down through an effective resistance of 30kΩ.
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 5. a length less than 50mm is recommended
for a copper foil of 1.0mm wide and 35µm thick.
(2) Avoid frequent switching using the ON / OFF CTL
pin (five times per second at the maximum).
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Regulator ICs
BP5320
FElectrical characteristics curve
FExternal dimensions (Units: mm)
S The soldering used inside the unit is equivalent to H63 solder, so it will remelt during reflow. Be sure not to subject
the unit to any vibrations when passing through the reflow furnace.
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