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LK112M18TR

Low noise and low drop voltage regulator with shutdown function

Manufacturer:

STMicroelectronics
Mfr.Part #:

LK112M18TR
Datasheet:

LK112M18TR Datasheet (PDF)
Mounting Style:

SMD/SMT
Output Voltage:

1.8 V
Output Current:

150 mA
Number of Outputs:

1 Output
EDA/CAD Models:

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LK112M18TR General Description

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.

Key Features

Output current up to 150 mA
Low-dropout voltage (350 mV at I_OUT= 150 mA)
Very low quiescent current:
- 0.1 μA in OFF mode and max. 250 μA in ON mode at I_OUT= 0 mA
Low output noise:
- typ. 30 μV at I_OUT= 60 mA and 10 Hz < f < 80 kHz
Wide range of output voltages
Internal current and thermal limit
Operative input voltage from:
- V_OUT+ 0.5 to 14 V (for V_OUT> 2 V) or from 2.5 V to 14 V (for V_OUT< 2 V)

Specifications

Product Category	LDO Voltage Regulators	Mounting Style	SMD/SMT
Output Voltage	1.8 V	Output Current	150 mA
Number of Outputs	1 Output	Polarity	Positive
Quiescent Current	250 uA	Input Voltage, Min	2.5 V
Input Voltage, Max	14 V	Output Type	Fixed
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 125 C
Dropout Voltage	350 mV	Series	LK112
Dropout Voltage - Max	700 mV	Height	1.3 mm
Ib - Input Bias Current	175 uA	Length	3 mm
Line Regulation	40 mV	Load Regulation	90 mV
Product Type	LDO Voltage Regulators	Factory Pack Quantity	3000
Subcategory	PMIC - Power Management ICs	Voltage Regulation Accuracy	2 %
Width	1.75 mm	Unit Weight	0.000222 oz