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參數資料
| 型號： | LM385M3-1.2X |
| 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, 1.235 V, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數： | 1/8頁 |
| 文件大小： | 294K |
| 代理商： | LM385M3-1.2X |
January 30, 2008
LM185-1.2/LM285-1.2/LM385-1.2
Micropower Voltage Reference Diode
General Description
The LM185-1.2/LM285-1.2/LM385-1.2 are micropower 2-ter-
minal band-gap voltage regulator diodes. Operating over a
10
μA to 20mA current range, they feature exceptionally low
dynamic impedance and good temperature stability. On-chip
trimming is used to provide tight voltage tolerance. Since the
LM185-1.2 band-gap reference uses only transistors and re-
sistors, low noise and good long term stability result.
Careful design of the LM185-1.2 has made the device excep-
tionally tolerant of capacitive loading, making it easy to use in
almost any reference application. The wide dynamic operat-
ing range allows its use with widely varying supplies with
excellent regulation.
The extremely low power drain of the LM185-1.2 makes it
useful for micropower circuitry. This voltage reference can be
used to make portable meters, regulators or general purpose
analog circuitry with battery life approaching shelf life.
Further, the wide operating current allows it to replace older
references with a tighter tolerance part.
The LM185-1.2 is rated for operation over a 55°C to 125°C
temperature range while the LM285-1.2 is rated 40°C to 85°
C and the LM385-1.2 0°C to 70°C. The LM185-1.2/LM285-1.2
are available in a hermetic TO-46 package and the
LM285-1.2/LM385-1.2 are also available in a low-cost TO-92
molded package, as well as SO and SOT-23. The LM185-1.2
is also available in a hermetic leadless chip carrier package.
Features
■ ±1% and 2% initial tolerance
■ Operating current of 10μA to 20mA
■ 1Ω dynamic impedance
■ Low temperature coefficient
■ Low voltage reference—1.235V
■ 2.5V device and adjustable device also available
■ LM185-2.5 series and LM185 series, respectively
Connection Diagrams
T0-92
Plastic Package (Z)
551810
Bottom View
Order Number LM285Z-1.2,
LM285BXZ-1.2, LM285BYZ-1.2
LM385Z-1.2, LM385BZ-1.2
LM385BXZ-1.2 or LM385BYZ-1.2
See NS Package Number Z03A
SOT23
551833
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to
Pin 2 or left floating.
Order Number LM385M3-1.2
See NS Package Number MF03A
SO Package
551809
Order Number LM285M-1.2,
LM285BXM-1.2, LM285BYM-1.2
LM385M-1.2, LM385BM-1.2
LM385BXM-1.2 or LM385BYM-1.2
See NS Package Number M08A
TO-46
Metal Can Package (H)
551806
Bottom View
Order Number LM185H-1.2, LM185H-1.2/883,
LM185BXH-1.2, LM185BYH-1.2
LM285H-1.2 or LM285BXH-1.2
See NS Package Number H02A
2008 National Semiconductor Corporation
5518
www.national.com
LM185-1.2/LM285-1.2/LM385-1.2
Micropower
Voltage
Reference
Diode
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM385M3-2.5 | 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 VREF - 輸入電壓（最大值）: 串聯 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 |
| LM385M3-2.5 | 制造商:Texas Instruments 功能描述:IC SM MICROPOWER REFERENCE 2.5V |
| LM385M3-2.5/NOPB | 功能描述:基準電壓& 基準電流 MICROPWR VLTG REF DIODE 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 VREF - 輸入電壓（最大值）: 串聯 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 |
| LM385M3-2.5/NOPB | 制造商:Texas Instruments 功能描述:Voltage Reference |
| LM385M3-2.5-NOPB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM185-2.5-N/LM285-2.5-N/LM385-2.5-N Micropower Voltage Reference Diode |
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