ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 3.2V 150MA SOT23-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：3.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：250 µA
- Current - Supply (Max)：-
- PSRR：55dB (400Hz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-30°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
Download product information
Overview
The LK112M32TR is a low-dropout linear voltage regulator IC manufactured by STMicroelectronics. It provides a fixed positive output voltage of 3.2V with a maximum output current capability of 150mA. The device features a quiescent current of 250 µA and offers a power supply rejection ratio (PSRR) of 55dB at 400Hz. It is housed in a compact SOT-23-5 surface-mount package. This component includes integrated shutdown control and internal PNP pass elements, designed for efficient power management in portable applications.
Feature Summary
- Low-noise low-dropout linear regulation architecture
- Integrated electronic switch controllable via TTL or CMOS logic levels
- Built-in protection features including overcurrent and thermal shutdown
Applications
- Portable battery-powered equipment requiring stable 3.2V rails
- Embedded systems utilizing TTL or CMOS logic control interfaces
- Noise-sensitive analog circuits needing low-quiescent current regulators
Procurement Notes
Verify component authenticity through authorized distributors as this part is marked obsolete. Confirm package integrity and pin alignment against the official datasheet specifications. Ensure replacement strategies account for the discontinuation status. Validate that any substitute components meet the original electrical requirements for voltage, current, and package dimensions.
Selection Notes
Select this regulator when a fixed 3.2V output is required with minimal external components. Consider the 150mA current limit and 250 µA quiescent current for battery life optimization. The SOT-23-5 package suits space-constrained designs. Verify input voltage ranges to ensure dropout performance remains within acceptable limits for the specific application load conditions.
Part Context
The LK112 series belongs to STMicroelectronics' family of low-dropout linear regulators featuring built-in electronic switches. These devices are engineered for applications demanding low noise and efficient power consumption. The M32 suffix specifically denotes the 3.2V fixed output variant, distinguishing it from other voltage options within the same functional family.
Replacement Considerations
As the LK112M32TR is obsolete, verify if newer revisions of the LK112 series or compatible LDOs from other manufacturers offer equivalent 3.2V output, 150mA current, and SOT-23-5 packaging. Ensure logical compatibility for the enable/shutdown pin functionality.
