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參數(shù)資料
| 型號： | OM185-5 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Insulation Displacement (IDC) Connector; No. of Contacts:34; Contact Termination:IDC; Gender:Male; Contact Plating:Gold RoHS Compliant: Yes |
| 中文描述： | 7.5A的，第5A，3A條，1.5A的低壓差型固定電壓正調(diào)節(jié)器 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 397K |
| 代理商： | OM185-5 |
3.3 - 69
3.3
OM183-5SC - OM186-15ST
.707
.750
.835
.695
.165
.200 TYP.
.550
.270
.045
.140 TYP.
.092 MAX.
.065
.005
MECHANICAL OUTLINE
PIN CONNECTION
Pin 1 - Ground
Pin 2 - V
OUT
Pin 3 - V
IN
1
2 3
PIN CONNECTION
1
2
3
MECHANICAL SPECIFICATIONS
P/N OM183SC and OM184SC JEDEC TO-258AA
P/N OM185ST and OM186ST JEDEC TO-257AA
MECHANICAL OUTLINE
.200
.420
.045
.035
This family of three terminal regulators is easy to use and
has all the protection features that are expected in high
performance voltage regulators. They are short circuit
protected, have safe area protection as well as thermal
shutdown to turn off the regulator should the temperature
exceed about 165
°
C.
These regulators offer lower dropout voltage and more
precise reference tolerance. Further, the reference stability
with temperature is improved over older types of regulators.
The only circuit difference between using this family and
older regulators is that they require an output capacitor
for stability.
Overload Recovery
When power is first turned on, as the input voltage rises,
the output follows the input, allowing the regulator to start
up into very heavy loads. During the start-up, as the input
voltage is rising, the input-to-output voltage differential
remains small, allowing the regulator to supply large output
currents. With high input voltage, a problem can occur
wherein removal of an output short will not allow the output
voltage to recover. Older regulators, such as the 7800
series, also exhibited this phenomenon, so it is not unique
to the OM183-5.
The problem occurs with a heavy output load when the
input voltage is high and the output voltage is low, such as
immediately after a removal of a short. The load line for
such a load may intersect the output current curve at two
points. If this happens, there are two stable output
operating points for the regulator. With this double
intersection, the power supply may need to be cycled down
to zero and brought up again to make the output recover.
Thermal Conditions
This series of regulators has internal power and thermal
limiting circuitry designed to protect the device under
overload conditions. For continuous normal load conditions
however, maximum junction temperature ratings must not
be exceeded. It is important to give careful consideration to
all sources of thermal resistance from junction to ambient.
This includes junction to case, case to heat sink interface,
and heat sink resistance itself. New thermal resistance
specifications have been developed to more accurately
reflect device temperature and ensure safe operating
temperatures. The data section for these new regulators
provides a separate thermal resistance and maximum
junction temperature for both the
Control Section
and the
Power Transistor.
Previous regulators, with a single
junction to case thermal resistance specification, used an
average of the two values provided here and therefore
could allow excessive junction temperature under certain
conditions of ambient temperature and heat sink resistance.
To avoid this possibility, calculations should be made for
both sections to ensure that both thermal limits are met.
Junction-to-case thermal resistance is specified from the
IC junction to the bottom of the case directly below the die.
This is the lowest resistance path for heat flow. Proper
mounting is required to ensure the best possible thermal
flow from this area of the package to the heat sink.
Thermal compound at the case-to-heat-sink interface is
strongly recommended. If the case of the device must be
electrically isolated, a thermally conductive spacer can be
used, as long as its added contribution to thermal
resistance is considered. Note that the case of all devices
in this series is electrically connected to the output.
APPLICATION NOTES
.430
.038 MAX.
.005
.120 TYP.
.537
.665
.645
.150
.750
.100 TYP.
.035
Pin 1 - Ground
Pin 2 - V
OUT
Pin 3 - V
IN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OM185-5ST | Insulation Displacement (IDC) Connector; No. of Contacts:36; Contact Termination:IDC; Gender:Male RoHS Compliant: Yes |
| OM185SR | 7.5A, 5A, 3A, 1.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS |
| OM185ST | 7.5A, 5A, 3A, 1.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS |
| OM186-5SM | SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits |
| OM186-5SR | Hi-Rel Fixed Voltage Low Dropout 3-Terminal Positive Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OM185-5NM | 制造商:IRF 制造商全稱:International Rectifier 功能描述:SURFACE MOUNT LOW DROPOUT POSITIVE FIXED VOLTAGE REGULATORS |
| OM185-5SM | 制造商:IRF 制造商全稱:International Rectifier 功能描述:SURFACE MOUNT LOW DROPOUT FIXED VOLTAGE POSITIVE REGULATORS |
| OM185-5SMM | 制造商:International Rectifier 功能描述:REGULATOR, VOLTAGE - Bulk |
| OM185-5SMP | 制造商:International Rectifier 功能描述:REG LDO LIN FIX POS 5V 2A 3SMD-1 - Bulk |
| OM185-5SR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Hi-Rel Fixed Voltage Low Dropout 3-Terminal Positive Regulator |
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