LK112S:Low noise and low drop voltage regulator with shutdown function

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.

Key Features

  • 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)
Product Specifications
DescriptionVersionSize
DS2395: Low noise and low drop voltage regulator with shutdown function12.0352 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Sample & Buy
Part NumberPackagePacking TypeOutput Voltage (V) (nom)Output Tolerance (typ)Output Current (A) (nom)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
LK112SM50TRSOT23-5LTape And Reel-20.20.241000NECEAR99MALAYSIA
LK112SM18TRSOT23-5LTape And Reel1.820.20.241000NECEAR99MALAYSIA
LK112SM33TRSOT23-5LTape And Reel3.320.20.241000NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
LK112SM50TRSOT23-5LIndustrialEcopack2md_wv-wspc-sot-wspc-23-wspc-5l_rvwv-wspc-kn05fc1_vers2_sdm_signed.pdf
md_wv-wspc-sot-wspc-23-wspc-5l_rvwv-wspc-kn05fc1_vers2_sdm.xml
LK112SM18TRSOT23-5LIndustrialEcopack2
LK112SM33TRSOT23-5LIndustrialEcopack2
Low noise and low drop voltage regulator with shutdown function LK112S
Very low drop voltage regulators with inhibit KFXX
md_wv-wspc-sot-wspc-23-wspc-5l_rvwv-wspc-kn05fc1_vers2_sdm_signed.pdf LK112S
md_wv-wspc-sot-wspc-23-wspc-5l_rvwv-wspc-kn05fc1_vers2_sdm.xml LK112S