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參數(shù)資料
| 型號(hào)： | LM323 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 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(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 126K |
| 代理商： | LM323 |
LM323, A
6
MOTOROLA ANALOG IC DEVICE DATA
Figure 13. Current Regulator
Figure 14. Adjustable Output Regulator
Figure 15. Current Boost Regulator
Figure 16. Current Boost with
Short Circuit Protection
5.0 V
R
Input
0.33
μ
F
LM323, A
R
IO
The LM323,A regulator can also be used as a current source when
connected as above. Resistor R determines the current as follows:
IO =
+ IB
IB
IB
0.7 mA over line, load and temperature changes
3.5 mA
For example, a 2.0 A current source would require R to be a 2.5
,
15 W resistor and the output voltage compliance would be the input
voltage less 7.5 V.
Constant
Current to
Grounded Load
Input
Output
1.0k
4
6
7
2
3
–
+
0.1
μ
F
10k
MC1741
VO, 8.0 V to 20 V
The addition of an operational amplifier allows adjustment to higher or
intermediate values while retaining regulation characteristics. The
minimum voltage obtainable with this arrangement is 3.0 V greater
than the regulator voltage.
LM323, A
0.33
μ
F
R
0.1
μ
F
Output
1.0
μ
F
The LM323, A series can be current boosted with a PNP transistor. The
2N4398 provides current to 15 A. Resistor R in conjuction with the VBE of
the PNP determines when the pass transistor begins conducting; this
circuit is not short circuit proof. Input–output differential voltage
minimum is increased by the VBE of the pass transistor.
2N4398 or Equiv
LM323, A
LM323, A
Input
Rsc
2N4398
or Equiv.
Output
R
MJ2955
or Equiv.
1.0
μ
F
The circuit of Figure 16 can be modified to provide supply protection
against short circuits by adding a short circuit sense resistor, RSC, and
an additional PNP transistor. The current sensing PNP must be able to
handle the short circuit current of the three–terminal regulator.
Therefore, an 8.0 A power transistor is specified.
Vin – VO
≥
2.5 V
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| LM324KANS | QUADRUPLE OPERATIONAL AMPLIFIERS |
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| LM324DH | Low power quad op amps |
| LM2902DBR | OP-AMP|QUAD|BIPOLAR|SSOP|14PIN|PLASTIC |
| LM324A | Low power quad op amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM323/D | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Positive Voltage Regulators |
| LM323_02 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:3.0 A Positive Voltage Regulators |
| LM323_08 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Three-terminal 3 A adjustable voltage regulators |
| LM323-155.52M | 制造商:CONNOR-WINFIELD 制造商全稱(chēng):Connor-Winfield Corporation 功能描述:5.0x7.0mm Surface Mount LVDS Clock Oscillator Series |
| LM323A | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:3-Amp, 5-Volt Positive Regulator |
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