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參數(shù)資料
| 型號： | NCV8506D2T25R4G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower 400 mA LDO Linear Regulators with DELAY and RESET |
| 中文描述： | 2.5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PSSO7 |
| 封裝： | LEAD FREE, D2PAK-7 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 163K |
| 代理商： | NCV8506D2T25R4G |
NCV8506 Series
http://onsemi.com
10
The value for the output capacitor C
OUT
shown in Figure 15
should work for most applications, however it is not
necessarily the optimized solution.
Figure 15. Test and Application Circuit Showing
Output Compensation
V
IN
V
OUT
C
OUT
**
33 F
R
RST
RESET
C
IN
*
0.1 F
NCV8506
*C
IN
required if regulator is located far from the power supply
filter.
**C
OUT
required for stability. Capacitor must operate at minimum
temperature expected.
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)
VOUT(min)]IOUT(max)
VIN(max)IQ
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
(1)
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
}
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 junction
to
case thermal resistance,
R
CS
= the case
to
heatsink thermal resistance, and
R
SA
= the heatsink
to
ambient 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)
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| NCV8506D2T33R4G | Micropower 400 mA LDO Linear Regulators with DELAY and RESET |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV8506D2T33 | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V 400mA 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(fù)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 |
| NCV8506D2T33G | 功能描述:低壓差穩(wěn)壓器 - LDO ANA MICROPOWER 400 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(fù)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 |
| NCV8506D2T33R4 | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V 400mA 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(fù)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 |
| NCV8506D2T33R4G | 功能描述:低壓差穩(wěn)壓器 - LDO ANA MICROPOWER 400 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(fù)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 |
| NCV8506D2T50 | 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 400mA 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(fù)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 |
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