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PDF RBO08-40M Data sheet ( Hoja de datos )
| Número de pieza | RBO08-40M | |
| Descripción | REVERSEDBATTERYAND OVERVOLTAGEPROTECTIONCIRCUITRBO | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RBO08-40M (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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® RBO08-40G/M/T
Application Specific Discretes
REVERSEDBATTERYAND
A.S.D.TM
OVERVOLTAGEPROTECTIONCIRCUIT (RBO)
FEATURES
8A DIODE TO GUARD AGAINST BATTERY RE-
VERSAL.
NEGATIVE OVERVOLTAGE PROTECTION BY
CLAMPING.
COMPLIANT WITH ISO/DTR 7637 STANDARD
FOR PULSES 1, 2, 3a and 3b.
SUITABLE FOR AUTOPROTECTED ALTER-
NATOR ENVIRONMENT.
BREAKDOWN VOLTAGE : 24 V min.
CLAMPING VOLTAGE : ± 40 V max.
MONOLITHIC STRUCTURE FOR GREATER
RELIABILITY.
D2PAK
RBO08-40G
DESCRIPTION
Designed to protect against battery reversal and
overvoltages in automotiveapplications, this
monolithic component offers multiple functions in
the same package :
D1 : reversed battery protection
T1 : clamping against negative overvoltages
T2 : Transil function for overvoltage protection.
PowerSO-10TM
RBO08-40M
TO220AB
RBO08-40T
FUNCTIONAL DIAGRAM
1
3
January 1998 - Ed : 2
2
1/14
1 page  
PINOUT configuration in D2PAK :
- Input (1) : Pin 1
- Output (3) : Pin 3
- Gnd (2) : Connected to base Tab
Marking : Logo, date code, RBO08-40G
RBO08-40G / RBO08-40M / RBO08-40T
D1
T2
T1
TAB
PINOUT configuration in PowerSO-10 :
- Input (1) : Pin 3
- Output (3) : Pin 7 and 9
- Gnd (2) : Connected to base Tab
Marking : Logo, date code, RBO08-40M
Pin 1 (NC)
Pin 2 (NC)
Pin 3 (Input 1)
Pin 4 (NC)
Pin 5 (NC)
Input (1) D1
T1
Output (3)
T2
Gnd (2)
Tab
TOP VIEW
Pin 10 (NC)
Pin 9 (Ouput 3)
Pin 8 (NC)
Pin 7 (Ouput 3)
Pin 6 (NC)
PINOUT configuration in TO220AB :
- Input (1) : Pin 1
- Output (3) : Pin 3
- GND (2) : Connected to base Tab
Marking : Logo, date code, RBO08-40T
D1
T2
T1
(TAB)
5/14
®
5 Page 
A new technology available today is IMS - an
Insulated Metallic Substrate. This offers greatly
enhanced thermal characteristics for surface
mount components. IMS is a substrate consisting
of three different layers, (I) the base material which
is available as an aluminium or a copper plate, (II)
a thermal conductive dielectrical layer and (III) a
copper foil, which can be etched as a circuit layer.
Using this material a thermal resistance of 8°C/W
with 40 cm2 of board floating in air is achievable
(see fig. 4). If even higher power is to be dissipated
an external heatsink could be applied which leads
to an Rth(j-a) of 3.5°C/W (see Fig. 5), assuming
that Rth (heatsink-air) is equal to Rth
(junction-heatsink). This is commonly applied in
practice, leading to reasonable heatsink
dimensions. Often power devices are defined by
RBO08-40G / RBO08-40M / RBO08-40T
considering the maximum junction temperature of
the device. In practice , however, this is far from
being exploited. A summary of various power
management capabilities is made in table 1 based
on a reasonable delta T of 70°C junction to air.
The PowerSO-10 concept also represents an
attractive alternative to C.O.B. techniques.
PowerSO-10 offers devices fully tested at low
and high temperature. Mounting is simple - only
conventional SMT is required - enabling the users
to get rid of bond wire problems and the problem to
control the high temperature soft soldering as well.
An optimized thermal management is guaranteed
through PowerSO-10 as the power chips must in
any case be mounted on heat spreaders before
being mounted onto the substrate.
Fig. 4 : Mounting on metal backed board
Copper foil
Insulation
Aluminium
Fig. 5 : Mounting on metal backed board with an
external heatsink applied
Copper foil
FR4 board
Aluminium
heatsink
TABLE 1
PowerSo-10 package mounted on
1.FR4 using the recommended pad-layout
2.FR4 with heatsink on board (6cm2)
3.FR4 with copper-filled through holes and external heatsink applied
4. IMS floating in air (40 cm2)
5. IMS with external heatsink applied
Rth (j-a)
50 °C/W
35 °C/W
12 °C/W
8 °C/W
3.5 °C/W
P Diss
1.5 W
2.0 W
5.8 W
8.8 W
20 W
11/14
®
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet RBO08-40M.PDF ] | |
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