产品概要
描述
The LK112S is a low-dropout linear regulator with shutdown function. The internal switch can be controlled by TTL or CMOS logic levels. The device is ON when the control pin is pulled to a high logic level. An external capacitor can be connected to the noise bypass pin to reduce the output noise level to 30 μVrms. An internal PNP pass transistor is used to achieve a low-dropout voltage.
The LK112S has a very low quiescent current in ON mode while in OFF mode the Iqis reduced to 100 nA max. The internal thermal shutdown circuitry limits the junction temperature below 150 °C. The load current is internally monitored and in the presence of a short-circuit or overcurrent conditions at the output, the device shuts down.
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性能一览
- Output current up to 200 mA
- Low-dropout voltage (500 mV max. at IOUT = 200 mA)
- Very low quiescent current: 0.1 μA in OFF mode and max. 250 μA in ON mode at IOUT = 0 mA
- Low output noise: typ. 30 μV at IOUT = 60 mA and 10 Hz < f < 80 kHz
- Wide range of output voltages
- Internal current and thermal limit
- VOUT tolerance ± 2% (at 25 °C)
- Operative input voltage from: VOUT + 0.5 to 14 V (for VOUT > 2 V) or from 2.5 V to 14 V (for VOUT < 2 V)
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LK112S
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LK112SM18TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LK112SM33TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - | |
| LK112SM50TR | Active 产品已量产 | SOT23-5L | Industrial | Ecopack2 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| LK112SM50TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LK112SM18TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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| LK112SM33TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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LK112SM50TR Active
LK112SM18TR Active
LK112SM33TR Active