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参数资料
| 型号： | LM285H-2.5/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, MBCY2 |
| 封装： | HERMETIC SEALED, METAL CAN, TO-46, 2 PIN |
| 文件页数： | 1/19页 |
| 文件大小： | 488K |
| 代理商： | LM285H-2.5/NOPB |
January 30, 2008
LM185-2.5/LM285-2.5/LM385-2.5
Micropower Voltage Reference Diode
General Description
The LM185-2.5/LM285-2.5/LM385-2.5 are micropower 2-ter-
minal band-gap voltage regulator diodes. Operating over a 20
μA to 20 mA current range, they feature exceptionally low dy-
namic impedance and good temperature stability. On-chip
trimming is used to provide tight voltage tolerance. Since the
LM-185-2.5 band-gap reference uses only transistors and re-
sistors, low noise and good long term stability result.
Careful design of the LM185-2.5 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 LM185-2.5 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. Fur-
ther, the wide operating current allows it to replace older
references with a tighter tolerance part. For applications re-
quiring 1.2V see LM185-1.2.
The LM185-2.5 is rated for operation over a 55°C to 125°C
temperature range while the LM285-2.5 is rated 40°C to 85°
C and the LM385-2.5 0°C to 70°C. The LM185-2.5/LM285-2.5
are available in a hermetic TO-46 package and the
LM285-2.5/LM385-2.5 are also available in a low-cost TO-92
molded package, as well as S.O. and SOT-23. The
LM185-2.5 is also available in a hermetic leadless chip carrier
package.
Features
■ ±20 mV (±0.8%) max. initial tolerance (A grade)
■ Operating current of 20 μA to 20 mA
■ 0.6Ω dynamic impedance (A grade)
■ Low temperature coefficient
■ Low voltage reference—2.5V
■ 1.2V device and adjustable device also available—
LM185-1.2 series and LM185 series, respectively
Connection Diagrams
TO-92
Plastic Package
551908
Bottom View
Order Number LM285Z-2.5,
LM285BXZ-2.5, LM285BYZ-2.5
LM385Z-2.5, LM385AXZ-2.5
LM385AYZ-2.5, LM385BZ-2.5,
LM385BXZ-2.5 or LM385BYZ-2.5
See NS Package Number Z03A
SO Package
551911
Order Number LM285M-2.5,
LM285BXM-2.5, LM285BYM-2.5
LM385M-2.5, LM385BM-2.5
LM385BXM-2.5 or LM385BYM-2.5
See NS Package Number M08A
SOT-23
551929
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.
Order Number LM385M3-2.5
See NS Package Number MA03B
2008 National Semiconductor Corporation
5519
www.national.com
LM185-2.5/LM285-2.5/LM385-2.5
Micropower
Voltage
Reference
Diode
相关PDF资料 |
PDF描述 |
|---|---|
| LM385BYM-2.5X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| LM385DR-1.2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8 |
| LM285DR-1.2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8 |
| LM385LP-1.2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PBCY3 |
| LM385PSR-1-2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM285LP-1-2 | 功能描述:基准电压& 基准电流 1.2V Micro Pwr RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM285LP-1-2 | 制造商:Texas Instruments 功能描述:IC VOLT REF 2.5V PRECISION |
| LM285LP-2-5 | 功能描述:基准电压& 基准电流 2.5V Micro Pwr RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM285LP-2-5 | 制造商:Texas Instruments 功能描述:VOLT REF 2.5V PRECISION TO-92 制造商:Texas Instruments 功能描述:VOLT REF, 2.5V, PRECISION, TO-92 制造商:Texas Instruments 功能描述:VOLT REF, 2.5V, PRECISION, TO-92; Topology:Shunt; Reference Voltage:2.5V; Voltage Reference Case Style:TO-92; No. of Pins:3; Temperature Coefficient:20ppm/C; Operating Temperature Range:-40C to +85C; SVHC:No SVHC (19-Dec-2012); ;RoHS Compliant: Yes |
| LM285LPE3-1-2 | 功能描述:基准电压& 基准电流 Micropower Voltage Reference RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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