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參數資料
| 型號： | LM4431M3X-2.5/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | LM4431 Micropower Shunt Voltage Reference; Package: SOT-23; No of Pins: 3; Qty per Container: 3000/Reel |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO3 |
| 封裝： | PLASTIC, SOT-23, 3 PIN |
| 文件頁數： | 1/10頁 |
| 文件大小： | 169K |
| 代理商： | LM4431M3X-2.5/NOPB |
LM4431
Micropower Shunt Voltage Reference
General Description
Ideal for space critical applications, the LM4431 voltage ref-
erence is available in the sub-miniature (3 mm x 1.3 mm)
SOT-23 surface-mount package. The LM4431’s advanced
design eliminates the need for an external stabilizing capaci-
tor while ensuring stability with any capacitive load, thus
making the LM4431 easy to use. The operating current
range is 100 A to 15 mA.
The LM4431 utilizes fuse and zener-zap reverse breakdown
voltage trim during wafer sort to ensure that the parts have
an accuracy of better than ±2.0% at 25C. Bandgap refer-
ence temperature drift curvature correction and low dynamic
impedance ensure stable reverse breakdown voltage accu-
racy over a wide range of operating temperatures and cur-
rents.
Features
n Small package: SOT-23
n No output capacitor required
n Tolerates capacitive loads
n Fixed reverse breakdown voltage of 2.50V
Key Specifications
n Output voltage tolerance 25C: ±2.0% (max)
n Low output noise (10 Hz to 10 kHz): 35 Vrms (typ)
n Wide operating current range: 100 A to 15 mA
n Commercial temperature range: 0C to +70C
n Low temperature coefficient: 30 ppm/C (typ)
Applications
n Portable, Battery-Powered Equipment
n Data Acquisition Systems
n Instrumentation
n Process Control
n Energy Management
n Product Testing
n Power Supplies
Connection Diagram
SOT-23 Package Marking Information
Only three fields of marking are possible on the SOT-23’s small surface. The following table gives the meaning of the three
fields.
Part Marking
Field Definition
S2E
First Field:
S = Reference
Second Field:
2 = 2.500V Voltage Option
Third Field:
E = Initial Reverse Breakdown Voltage Tolerance of ±2.0%
SOT-23
DS011374-1
* This pin must be left floating or connected to pin 2.
Top View
Order Number LM4431M3-2.5
See NS Package Number M03B
(JEDEC Registration TO-236AB)
July 1998
LM4431
Micropower
Shunt
V
oltage
Reference
1998 National Semiconductor Corporation
DS011374
www.national.com
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