LK112SM18TR STMicroelectronics

LK112S Low noise and low drop voltage regulator with shutdown function Datasheet - production data Description 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 SOT23-5L connected to the noise bypass pin to reduce the output noise level to 30 Vrms. An internal PNP pass transistor is used to achieve a low-dropout voltage. The LK112S has a very low quiescent current in Features ON mode while in OFF mode the I is reduced to q Output current up to 200 mA 100 nA max. The internal thermal shutdown circuitry limits the junction temperature below Low-dropout voltage (500 mV max. at I = OUT 150 C. The load current is internally monitored 200 mA) and in the presence of a short-circuit or Very low quiescent current: 0.1 A in OFF overcurrent conditions at the output, the device mode and max. 250 A in ON mode at I = 0 OUT shuts down. mA Low output noise: typ. 30 V at I = 60 mA OUT and 10 Hz < f < 80 kHz Wide range of output voltages Internal current and thermal limit V tolerance 2% (at 25 C) OUT Operative input voltage from: V + 0.5 to 14 OUT V (for V > 2 V) or from 2.5 V to 14 V (for OUT V < 2 V) OUT Table 1. Device summary Part number Output voltage LK112SM18TR 1.8 V LK112SM33TR 3.3 V LK112SM50TR 5.0 V February 2014 DocID8059 Rev 12 1/17 This is information on a product in full production. www.st.comContents LK112S Contents 1 Diagram . 3 2 Pin configuration . 4 3 Maximum ratings 5 4 Electrical characteristics . 6 5 Typical characteristics . 7 6 Package mechanical data 12 7 Packaging mechanical data 14 8 Revision history . 16 2/17 DocID8059 Rev 12