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參數(shù)資料
| 型號： | LM323A |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 126K |
| 代理商： | LM323A |
LM323, A
3
MOTOROLA ANALOG IC DEVICE DATA
1.0k
Q2
Q1
Q20
210
Q21
100
Q22
6.7V
16k
Q9
Q8
300
Q3
10k
Q4
Q5
Q10
1.0k
Q24
200
Q25
Q27
Q26
3.0k
5.6k
Q16
Q19
10pF
Q23
300
13
0.12
200
Output
50
520
Q12
2.6k
2.0k
3.9k
Q13
Q14
6.0k
Q11
Q6
Q7
40pF
Q15
2.8k
7.2k
840
1.7k
Gnd
Input
2
1.0k
6.0k
Representative Schematic Diagram
Q17
Q18
VOLTAGE REGULATOR PERFORMANCE
The performance of a voltage regulator is specified by its
immunity to changes in load, input voltage, power dissipation,
and temperature. Line and load regulation are tested with a
pulse of short duration (< 100
μ
s) and are strictly a function of
electrical gain. However, pulse widths of longer duration
(> 1.0 ms) are sufficient to affect temperature gradients
across the die. These temperature gradients can cause a
change in the output voltage, in addition to changes by line
and load regulation. Longer pulse widths and thermal
gradients make it desirable to specify thermal regulation.
Thermal regulation is defined as the change in output
voltage caused by a change in dissipated power for a
specified time, and is expressed as a percentage output
voltage change per watt. The change in dissipated power can
be caused by a change in either input voltage or the load
current. Thermal regulation is a function of IC layout and die
attach techniques, and usually occurs within 10 ms of a
change in power dissipation. After 10 ms, additional changes
in the output voltage are due to the temperature coefficient of
the device.
Figure 1 shows the line and thermal regulation response of
a typical LM323A to a 20 W input pulse. The variation of the
output voltage due to line regulation is labeled
à
and the
thermal regulation component is labeled
á
. Figure 2 shows
the load and thermal regulation response of a typical LM323A
to a 20 W load pulse. The output voltage variation due to load
regulation is labeled
à
and the thermal regulation component
is labeled
á
.
2
1
2
1
V
I
V
V
Figure 1. Line and Thermal Regulation
Figure 2. Load and Thermal Regulation
Vout = 5.0 V
Vin = 8.0 V
→
18 V
→
8.0 V
Iout = 2.0 A
= Regline = 2.4 mV
= Regtherm = 0.0015% VO/W
t, TIME (2.0 ms/DIV)
V
V
(
1
2
18 V
8.0 V
2
Vout = 5.0 V
Vin = 15 V
Iout = 0 A
→
2.0 A
→
0 A
= Regline = 5.4 mV
= Regtherm = 0.0015% VO/W
t, TIME (2.0 ms/DIV)
C
V
(
1
2
2.0
0
2
相關(guān)PDF資料 |
PDF描述 |
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| LM323H | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM323KSTEEL | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM123KSTEEL-MIL | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM323AT | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM323T | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM323AK | 制造商:Motorola Inc 功能描述: |
| LM323AK STEEL/NOPB | 功能描述:IC REG LDO 5V 3A TO-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:12V 輸入電壓:14.5 V ~ 35 V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:500mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-205AD，TO-39-3 金屬罐 供應(yīng)商設(shè)備封裝:TO-39 包裝:散裝 其它名稱:*LM78M12CH*LM78M12CH/NOPBLM78M12CH |
| LM323AK/STEEL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| LM323AK-STEEL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3-Amp, 5-Volt Positive Regulator |
| LM323AT | 功能描述:IC REG LDO 5V 3A TO220AB RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品變化通告:Heatsink Pkg Change 09/Oct/2007 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:24V 輸入電壓:最高 40 V 電壓 - 壓降（標(biāo)準(zhǔn)）:2V @ 1A 穩(wěn)壓器數(shù)量:1 電流 - 輸出:1A 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-220-3 供應(yīng)商設(shè)備封裝:TO-220-3 包裝:管件 |
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