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BA00CC0WFPTR View Datasheet(PDF) - ROHM Semiconductor

Part NameDescriptionManufacturer
BA00CC0WFPTR 2A/1A Variable Output LDO Regulators ROHM
ROHM Semiconductor ROHM
BA00CC0WFPTR Datasheet PDF : 20 Pages
First Prev 11 12 13 14 15 16 17 18 19 20
BA00DD0xx series BA00CC0xx series
Power Dissipation
HRP5
Board size : 70×70×1.6 3 board contains a thermal
Board front copper foil area : 10.5×10.5 2
2-layer board (back surface copper foil area :15×15 2)
2-layer board (back surface copper foil area :70×70 2)
4-layer board (back surface copper foil area :70×70 2)
7.3W
5.5W
Datasheet
TToO22252F0PF-P5-5
1 When using a maximum heat sick : θj-c=6.25(/W)
2 When using an IC alone : θj-c=62.5(/W)
1 20.0
2.3W
2 2.0
Ai
T ℃)
Fig.28
TO252-5
.
Mounted on a Rohm standard board
Board size : 70×70×1.6
Copper foil area :7×7
TO252-5θja=96.2(/W)
.
1.30
.
Ai
T ℃)
Fig.29
.
.
.
Ai
T ℃)
Fig.30
When using at temperatures over Ta=25, please refer to the heat reducing characteristics shown in Fig.28 through 30.
The IC characteristics are closely related to the temperature at which the IC is used, so it is necessary to operate the IC at
temperatures less than the maximum junction temperature TjMAX.
Fig.29 shows the acceptable loss and heat reducing characteristics of the TO220FP package The portion shown by the
diagonal line is the acceptable loss range that can be used with the IC alone. Even when the ambient temperature Ta is a
normal temperature (25), the chip (junction) temperature Tj may be quite high so please operate the IC at temperatures
less than the acceptable loss Pd.
The calculation method for power consumption Pc(W) is as follows:
Pc = (Vcc-Vo)×IoVcc×Icca
VccInput voltage
VoOutput voltage
IoLoad current
IccaCircuit current
Acceptable loss Pd Pc
Solving this for load current Io in order to operate within the acceptable loss,
Io
Pd – Vcc×Icca
VccVo
Please refer to Fig.8 and 20 for Icca.
It is then possible to find the maximum load current IoMAX with respect to the applied voltage Vcc at the time of thermal design.
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
Downloaded from: http://www.datasheetcatalog.com/
12/17
TSZ02201-0R6R0A600080-1-2
25.July.2013 Rev.002
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