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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.
主要特性
- 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)
精选 视频
All resources
产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 12 Oct 2020 |
12 Oct 2020
|
选型指南 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 25 Mar 2020 |
25 Mar 2020
|
手册 (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 15 Feb 2019 |
15 Feb 2019
|
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| 26 Feb 2020 |
26 Feb 2020
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CAD/EDA Symbols, Footprints and Models
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| LK112SM18TR |
批量生产
|
SOT23-5L | 工业 | Ecopack2 |
|
| LK112SM33TR |
批量生产
|
SOT23-5L | 工业 | Ecopack2 | |
| LK112SM50TR |
批量生产
|
SOT23-5L | 工业 | 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 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | 更多信息 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||||
| LK112SM50TR | 4 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 5 | 2 | 0.2 | CHINA | 0.24 / 1k | ||
| LK112SM18TR | 2 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 1.8 | 2 | 0.2 | CHINA | 0.24 / 1k | ||
| LK112SM33TR | 6 distributors | Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | 3.3 | 2 | 0.2 | CHINA | 0.24 / 1k | ||
