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Technical Specifications
Parameters and characteristics for this part
| Specification | LK112M55TR |
|---|---|
| Control Features | Enable |
| Current - Output | 150 mA |
| Current - Quiescent (Iq) | 250 µA |
| Mounting Type | Surface Mount |
| Number of Regulators | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -30 ░C |
| Output Configuration | Positive |
| Package / Case | SOT-753, SC-74A |
| Protection Features | Over Temperature, Over Current |
| PSRR | 55 dB |
| Supplier Device Package | SOT-23-5 |
| Voltage - Input (Max) [Max] | 14 V |
| Voltage - Output (Min/Fixed) | 5.5 V |
| Voltage Dropout (Max) [Max] | 0.35 V |
LK112 Series
Low noise and low drop voltage regulator with shutdown function
| Part | Control Features | Voltage - Input (Max) [Max] | Package / Case | Voltage - Output (Min/Fixed) | Current - Quiescent (Iq) | PSRR | Supplier Device Package | Output Configuration | Number of Regulators | Mounting Type | Current - Output | Protection Features | Voltage Dropout (Max) [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Voltage Dropout (Max) | Voltage - Output (Min/Fixed) [Min] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 3.8 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 0.35 V | 125 °C | -30 ░C | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 5.5 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 0.35 V | 125 °C | -30 ░C | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 2.5 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 0.35 V | 125 °C | -30 ░C | ||
 STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 5 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 0.35 V | 125 °C | -30 ░C | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 3.3 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 0.35 V | 125 °C | -30 ░C | ||
 STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 3.2 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 0.2 A | Over Current Over Temperature | 125 °C | -40 C | 0.5 V | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 5.5 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 0.2 A | Over Current Over Temperature | 125 °C | -40 C | 0.5 V | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 5 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 0.2 A | Over Current Over Temperature | 125 °C | -40 C | 0.5 V | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 4 V | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 0.2 A | Over Current Over Temperature | 125 °C | -40 C | 0.5 V | ||
STMicroelectronics | Enable | 14 V | SC-74A SOT-753 | 250 µA | 55 dB | SOT-23-5 | Positive | 1 | Surface Mount | 150 mA | Over Current Over Temperature | 125 °C | -30 ░C | 1.3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 0.22 | |
Description
General part information
LK112 Series
The LK112 is a low-dropout linear regulator with a built-in electronic switch. The internal switch can be controlled by TTL or CMOS logic levels. The device is on-state when the control pin is pulled to a logic high 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 LK112 has a very low quiescent current in on mode while in off mode Iqis reduced below 100 nA max. The internal thermal shutdown circuitry limits the junction temperature below 150 °C. Load current is internally monitored and the device shuts down in the presence of a short-circuit or overcurrent condition on the output.
Documents
Technical documentation and resources