LK112   Product is in volume production.

Low noise and low drop voltage regulator with shutdown function

下载数据手册

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.

主要特性

  • Output current up to 150 mA
  • Low-dropout voltage (350 mV at IOUT= 150 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
  • 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)

资源

技术文档

产品规格
Description 版本 文档大小
DS2041 DS2041: Low noise low drop voltage regulator with shutdown function 17.0 362 KB

出版刊物和宣传资料

选型指南
Description 版本 文档大小
Linear and Switching Voltage Regulators Selection Guide 3.0 370 KB
手册
Description 版本 文档大小
电源管理 2017版指南 09.2017 4 MB
Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.0 216 KB
Power management for handheld and portable 2.0 1 MB
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样片和购买

型号 Package Packing Type Output Voltage (V) (nom) Output Tolerance (typ) Output Current (A) (nom) Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
LK112M33TR SOT23-5L Tape And Reel 3.3 2 0.15 Active 0.161 1000 EAR99 CHINA MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
LK112M50TR SOT23-5L Tape And Reel 5 2 0.15 Active 0.161 1000 EAR99 MALAYSIA MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
LK112M80TR SOT23-5L Tape And Reel 8 2 0.15 Active 0.161 1000 EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
LK112M60TR SOT23-5L Tape And Reel 6 2 0.15 Active 0.161 1000 EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
LK112M15TR SOT23-5L Tape And Reel 1.5 2 0.15 Active 0.161 1000 EAR99 MALAYSIA MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
LK112M25TR SOT23-5L Tape And Reel 2.5 2 0.15 Active 0.161 1000 EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
LK112M18TR SOT23-5L Tape And Reel 1.8 2 0.15 Active 0.161 1000 EAR99 MALAYSIA MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LK112M33TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M50TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M80TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M60TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M15TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M25TR ActiveSOT23-5LIndustrialEcopack2 0 0
LK112M18TR ActiveSOT23-5LIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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