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 3.3V 500MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：80dB ~ 65dB (120Hz ~ 65dB)
- 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 LF33ABPT is a very low drop voltage regulator with an inhibit function, manufactured by STMicroelectronics. It provides a fixed 3.3 V output at up to 500 mA. The device supports a maximum DC input voltage of 16.0 V and operates within a temperature range of -40°C to +125°C. It features a dropout voltage of 200 mV. The component utilizes a TO-252-5 surface mount package with five pins.
Feature Summary
- Integrated inhibit control for power management
- Very low dropout voltage operation
- Fixed 3.3 V output regulation
Applications
- Standby microprocessor control-unit systems
- Automotive applications connected directly to car batteries
- Battery-powered systems requiring low noise and low power
Procurement Notes
Verify the specific suffix (e.g., TR) for tape-and-reel packaging requirements against your assembly needs. Confirm the exact thermal performance specifications for your PCB layout design. Ensure the inhibit pin logic levels match your system controller outputs. Check for any updated revision notes in the official datasheet before finalizing the bill of materials.
Selection Notes
Select this component when a fixed 3.3 V rail is required with integrated shutdown capability. The TO-252-5 package suits applications needing moderate current handling with surface mount constraints. Consider the 16 V maximum input rating for automotive battery protection scenarios. Evaluate thermal dissipation requirements based on the expected load current and ambient temperature conditions.
Part Context
This part belongs to the LF33 series of very low drop regulators from STMicroelectronics. These devices are designed for efficiency in portable and automotive electronics. The series offers various output voltages while maintaining low quiescent current. The LF33ABPT specifically integrates an inhibit feature for enhanced system power control.
Replacement Considerations
Check for LF33ABDT-TR as a potential alternative in different packaging. Verify pinout compatibility and electrical specifications before substitution. Ensure the substitute maintains the same inhibit functionality and thermal characteristics.
