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 1.8V 500MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 200mA (Typ)
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：82dB ~ 60dB (120Hz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
Download product information
Overview
The LF18CPT-TR is a positive fixed-output low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 1.8 V output with a maximum continuous current of 0.5 A. The device operates within an input voltage range of -0.5 V to 40 V and features a typical dropout voltage of 0.45 V, with a maximum specified at 700 mV. It maintains a voltage regulation accuracy of 2% and draws a quiescent current of approximately 1 mA. The component supports surface-mount installation in a TO-252-5 package and functions reliably across an extended temperature range from -40 °C to +125 °C.
Feature Summary
- Provides a fixed 1.8 V output with high precision regulation suitable for sensitive digital logic circuits.
- Features very low dropout voltage characteristics that maximize efficiency in battery-powered systems.
- Includes integrated overcurrent and thermal shutdown protection mechanisms for enhanced operational safety.
Applications
- Low-noise power supplies for battery-operated electronic devices
- Power management for portable consumer electronics requiring stable 1.8 V rails
- Pre-regulation stages for switching converters in industrial control systems
Procurement Notes
Verify the specific suffix configuration against official datasheets to ensure correct packaging and electrical tolerances. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Validate that the TO-252-5 footprint matches your PCB design requirements before finalizing procurement orders.
Selection Notes
Select this component when a fixed 1.8 V rail is required with moderate current demands up to 0.5 A. Consider its low quiescent current for applications prioritizing energy efficiency. Ensure the input voltage remains within the specified limits to maintain regulation and avoid excessive power dissipation in the TO-252-5 package.
Part Context
This part belongs to the LFxx series of ultra-low-dropout regulators designed for low-power applications. The series offers various fixed output voltages optimized for noise-sensitive environments. The LF18CPT-TR specifically targets cost-effective solutions for portable devices where space and power consumption are critical constraints.
Replacement Considerations
Cross-reference with LF18CDT-TR for identical electrical specifications but different DPAK packaging. Verify pin compatibility and thermal performance differences between TO-252-5 and DPAK variants during substitution planning.
