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參數(shù)資料
| 型號： | NCV8512 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG |
| 中文描述： | 5.0V的微一百五十零毫安LDO線性穩(wěn)壓器的延遲，可調(diào)復位和監(jiān)視標志 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大小： | 106K |
| 代理商： | NCV8512 |
NCV8512
http://onsemi.com
9
CALCULATING POWER DISSIPATION IN A
SINGLE OUTPUT LINEAR REGULATOR
The maximum power dissipation for a single output
regulator (Figure 16) is:
PD(max)
[VIN(max)
VIN(max)IQ
VOUT(min)]IOUT(max)
(1)
where:
V
IN(max)
is the maximum input voltage,
V
OUT(min)
is the minimum output voltage,
I
OUT(max)
is the maximum output current for the
application, and
I
Q
is the quiescent current the regulator consumes at
I
OUT(max)
.
Once the value of P
D(max)
is known, the maximum
permissible value of R
JA
can be calculated:
150
°
C
RJA
TA
PD
(2)
The value of R
JA
can then be compared with those in the
package section of the data sheet. Those packages with
R
JA
’s less than the calculated value in equation 2 will keep
the die temperature below 150
°
C.
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
SMART
REGULATOR
I
Q
Control
Features
I
OUT
I
IN
Figure 16. Single Output Regulator with Key
Performance Parameters Labeled
V
IN
V
OUT
}
HEATSINKS
A heatsink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment will have a thermal resistance. Like
series electrical resistances, these resistances are summed to
determine the value of R
JA
:
RJA
RJC
RCS
where:
R
JC
= the junctiontocase thermal resistance,
R
CS
= the casetoheatsink thermal resistance, and
R
SA
= the heatsinktoambient thermal resistance.
R
JC
appears in the package section of the data sheet. Like
R
JA
, it too is a function of package type. R
CS
and R
SA
are
functions of the package type, heatsink and the interface
between them. These values appear in heatsink data sheets
of heat sink manufacturers.
Further mounting and cooling information is available in
the application note, AN1040/D, “Mounting Considerations
for
Power
Semiconductors”
ON Semiconductor web site.
RSA
(3)
located
in
the
ORDERING INFORMATION
Device
Output Voltage
Package
Shipping
NCV8512PW50G
5.0 V
SOW16 E Pad
(PbFree)
47 Units / Rail
NCV8512PW50R2G
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
1000 / Tape & Reel
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| NCV8512PW50G | 5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG |
| NCV8512PW50R2G | 5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG |
| NCV8664 | Ultra−Low Iq Low Dropout Linear Regulator |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCV8512PW50G | 功能描述:低壓差穩(wěn)壓器 - LDO 5V MICROPOWER 150mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCV8512PW50R2G | 功能描述:低壓差穩(wěn)壓器 - LDO 5V MICROPOWER 150mA LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCV8518 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| NCV8518A | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Low Dropout Linear Regulator with Watchdog, Wake Up, RESET, and ENABLE |
| NCV8518APDG | 功能描述:低壓差穩(wěn)壓器 - LDO LINEAR VLT REGULATOR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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