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參數資料
| 型號： | LM136H-2.5/883B |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, MBCY3 |
| 封裝： | METAL CAN, TO-46, 3 PIN |
| 文件頁數： | 11/14頁 |
| 文件大?。?/td> | 306K |
| 代理商： | LM136H-2.5/883B |
Temperature Drift
571527
Application Hints
The LM136 series voltage references are much easier to use
than ordinary zener diodes. Their low impedance and wide
operating current range simplify biasing in almost any circuit.
Further, either the breakdown voltage or the temperature co-
efficient can be adjusted to optimize circuit performance.
Figure 1 shows an LM136 with a 10k potentiometer for ad-
justing the reverse breakdown voltage. With the addition of
R1 the breakdown voltage can be adjusted without affecting
the temperature coefficient of the device. The adjustment
range is usually sufficient to adjust for both the initial device
tolerance and inaccuracies in buffer circuitry.
If minimum temperature coefficient is desired, two diodes can
be added in series with the adjustment potentiometer as
shown in Figure 2. When the device is adjusted to 2.490V the
temperature coefficient is minimized. Almost any silicon sig-
nal diode can be used for this purpose such as a 1N914,
1N4148 or a 1N457. For proper temperature compensation
the diodes should be in the same thermal environment as the
LM136. It is usually sufficient to mount the diodes near the
LM136 on the printed circuit board. The absolute resistance
of R1 is not critical and any value from 2k to 20k will work.
571528
FIGURE 1. LM136 With Pot for Adjustment
of Breakdown Voltage
(Trim Range = ±120 mV typical)
571529
FIGURE 2. Temperature Coefficient Adjustment
(Trim Range = ±70 mV typical)
Low Cost 2 Amp Switching Regulator
571505
*
L1 60 turns #16 wire on Arnold Core A-254168-2
Efficiency
≈ 80%
www.national.com
6
LM136-2.5/LM236-2.5/LM336-2.5V
相關PDF資料 |
PDF描述 |
|---|---|
| LM336M-2.5X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PDSO8 |
| LM336Z-5.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
| LM336BZ-5.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
| LM336BM-5.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PDSO8 |
| LM3370TLX-2613/NOPB | 1.4 A DUAL SWITCHING CONTROLLER, 2400 kHz SWITCHING FREQ-MAX, PBGA20 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM136H-5.0 | 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| LM136H-5.0/883 | 制造商:Texas Instruments 功能描述:V-Ref Precision 5V 10mA 3-Pin TO-46 Tray 制造商:Texas Instruments 功能描述:2.5V REFERENCE DIODE |
| LM136H-5.0/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| LM136H-5.0/883C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| LM136H-5.0/NOPB | 功能描述:基準電壓& 基準電流 RoHS:否 制造商:STMicroelectronics 產品:Voltage References 拓撲結構:Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
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