- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363236 > NCV8503PWADJR2 (ON SEMICONDUCTOR) Micropower 400 mA LDO Linear Regulators with ENABLE, DELAY, Adjustable RESET, and General Use Comparator PDF資料下載
參數(shù)資料
| 型號： | NCV8503PWADJR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower 400 mA LDO Linear Regulators with ENABLE, DELAY, Adjustable RESET, and General Use Comparator |
| 中文描述： | 1.261 V-1.339 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大小： | 106K |
| 代理商： | NCV8503PWADJR2 |
NCV8503 Series
http://onsemi.com
11
Figure 20. 16 Lead SOW (Exposed Pad), JA as a
Function of the Pad Copper Area (2 oz. Cu
Thickness), Board Material = 0.0625 G10/R4
40
70
90
100
T
J
J
,
°
C
0
Copper Area (mm
2
)
200
400
800
80
60
50
600
CALCULATING POWER DISSIPATION IN A
SINGLE OUTPUT LINEAR REGULATOR
The maximum power dissipation for a single output
regulator (Figure 21) 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 21. Single Output Regulator with Key
Performance Parameters Labeled
V
IN
V
OUT
}
HEAT SINKS
A heat sink 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 heat sink data sheets
of heat sink manufacturers.
RSA
(3)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCV8503PW50 | Micropower 400 mA LDO Linear Regulators with ENABLE, DELAY, Adjustable RESET, and General Use Comparator |
| NCV8503PW33R2 | Micropower 400 mA LDO Linear Regulators with ENABLE, DELAY, Adjustable RESET, and General Use Comparator |
| NCV8503PW50R2 | Micropower 400 mA LDO Linear Regulators with ENABLE, DELAY, Adjustable RESET, and General Use Comparator |
| NCV8504PW25R2 | Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator |
| NCV8504PW33 | Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV8503PWADJR2G | 功能描述:低壓差穩(wěn)壓器 - LDO 400mA ADJ w/ENABLE 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCV8504 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator |
| NCV8504_07 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator |
| NCV8504PW25 | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 400mA w/Delay 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCV8504PW25G | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 400mA w/Delay 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。