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Product Detailed Parameters
- Description：IC REG LINEAR 12V 500MA DPAK
- 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)：12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1.5 mA
- Current - Supply (Max)：12 mA
- PSRR：69dB ~ 54dB (120Hz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The LF120CDT-TR is a fixed-output linear regulator from the LFxx series, manufactured by STMicroelectronics. It provides a stable 12 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 at full load. Key electrical specifications include a quiescent current of 1.5 mA and power supply rejection ratios (PSRR) of 69 dB at 120 Hz and 54 dB at 10 kHz. It incorporates overcurrent and thermal overload protection and functions reliably across a junction temperature range of -40°C to 125°C.
Feature Summary
- Very low dropout voltage design suitable for battery-powered systems
- Integrated overcurrent and thermal overload protection mechanisms
- Low quiescent current operation for enhanced energy efficiency
Applications
- Battery powered systems requiring low noise regulation
- Low-power applications demanding minimal static current consumption
- General DC to DC conversion in portable electronic devices
Procurement Notes
Verify the specific ordering suffix to confirm packaging type, as the LF120CDT-TR designation indicates tape and reel packaging. Confirm RoHS compliance status and ensure the selected variant matches the required lead-free specifications for your manufacturing process. Cross-reference the manufacturer part number with distributor codes to avoid substitution errors during procurement.
Selection Notes
Select this component when a fixed 12 V output is required with high efficiency under light loads due to low quiescent current. Ensure the input voltage does not exceed the 40 V absolute maximum rating. Consider the DPAK package thermal characteristics for heat dissipation at 0.5 A loads. Verify that the 0.45 V dropout characteristic meets the minimum headroom requirements of the specific application circuit.
Part Context
This component belongs to the LFxx family of very low drop regulators produced by STMicroelectronics. The LFxx series is designed for applications requiring wide input voltage ranges and low noise performance. The LF120CDT-TR specifically utilizes the DPAK surface-mount package, offering a compact solution for space-constrained designs while maintaining robust regulatory capabilities.
Replacement Considerations
Check for direct pin-compatible substitutes within the LFxx series that offer different output voltages or current ratings if system requirements change. Verify that any replacement maintains the same DPAK footprint and thermal performance characteristics to ensure seamless integration without PCB redesign.
