bp5037 ROHM Co. Ltd., bp5037 Datasheet - Page 4

• Manufacturer Part Number: bp5037
• Description: Ac / Dc Converter
• Manufacturer: ROHM Co. Ltd.

FExternal components
(1)
The rectifying diode should fulfill the following conditions.
With regard to absolute ratings, the reverse surge current
should be 400V or higher, the average rectifying current
should be 0.5A or higher, and the forward surge current
should be 20A or higher. An acceptable example is the
1SR35-400A.
FOperation notes
(1)
Refer to the component placement diagram and keep the
cross-hatched distances as small as possible.
(2)
Use an in-rush current suppression resistor of 10
lower.
(3)
bient temperatures rises.
652
Communication ICs
Diode (D
Component placement
In-rush current suppression resistor
The output current needs to be reduced as the am-
1
)
or
(2)
For half-wave rectification use a capacitor of at least
33 F, and for full-wave rectification use a capacitor of at
least 10 F. In both cases, the capacitor should have a
withstanding voltage of at least 200V.
(3)
The inductance should be in the range 820 H to 1.8mH,
and the rated current should be at least 0.3A. This coil in-
fluences the characteristics of the BP5037, so consult
your sales representative before use.
(4)
This capacitor should have a low ESR. Capacitors de-
signed for low-impedance switching power supplies are
especially suitable.
The withstanding voltage should be at least 35V and the
allowable ripple current should be at least 0.1A.
(4)
If the common pins are not securely connected, or pins
which connected internally but are not used are con-
nected to other pins, abnormal voltages can be gener-
ated resulting in component failure.
(5)
The excessive current limit is a drooping model. At 25_C,
if excessive current which exceeds the absolute maxi-
mum ratings is produced intermittently, or is produced
continuously for a total of one minute or longer, the prod-
uct is vulnerable to damage.
If there is any danger of the load being shorted or exces-
sive current being produced, always use a protective de-
vice such as a fuse.
(6)
(7)
As a stand-alone product, this product is not subject to
regulations governing electrical appliances.
Please be aware, therefore, that applications must be
submitted for sets and not for individual products.
(8)
This product is not insulated on the primary or secondary
sides, and there is danger of electrical shock if it is
touched.
(9)
Equipment using this product should not be connected to
other equipment. If connected, insulation should be pro-
vided.
Capacitor for input voltage smoothing
Coil (L
Capacitor for output voltage smoothing (C
Lead pins should be securely soldered.
Excessive current and shorted leads
Do not subject this product to strong impact.
Regulations governing electrical products
Insulation
Connection with other devices
1
)
BP5037
2
)