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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 800MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：1.22V
- Voltage - Output (Max)：5V
- Voltage Dropout (Max)：0.3V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：2.5 mA
- Current - Supply (Max)：-
- PSRR：65dB ~ 55dB (120Hz ~ 1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Short Circuit
- 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：-
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Overview
The LD39080PT-R is an ultra low drop BiCMOS voltage regulator manufactured by STMicroelectronics. It provides a guaranteed output current of 0.8 A with an operating input voltage range from 2.5 V to 6 V. The device features an adjustable output voltage ranging from 1.22 V to 5.0 V, utilizing a reference voltage of 1.22 V. Quiescent current is typically 1 mA at full load and drops to a maximum of 1 µA in off mode. Dropout voltage is specified as 150 mV typ. at 0.8 A load and 20 mV typ. at 150 mA load. The unit operates within a temperature range of -40 °C to +125 °C and is housed in a PPAK package.
Feature Summary
- Ultra low dropout voltage performance across varying load currents
- Logic-controlled electronic shutdown for power saving
- Internal current limit and thermal protection mechanisms
- Stable operation with ceramic output capacitors
Applications
- Microprocessor power supply
- DSP power supply
- Post regulators for switching suppliers
- High efficiency linear regulator
Procurement Notes
Verify the specific part number LD39080PT-R against official STMicroelectronics documentation to confirm availability status and exact specifications. Ensure that the PPAK package dimensions and pinout align with the design requirements. Check for any recent revisions to the datasheet that may impact electrical characteristics or application notes before finalizing procurement decisions.
Selection Notes
Select this component when an adjustable output voltage between 1.22 V and 5.0 V is required with high current capability up to 0.8 A. Consider the ultra low dropout characteristic for applications where the input-to-output voltage differential is minimal. The logic-controlled shutdown feature makes it suitable for battery-operated systems requiring low standby current consumption.
Part Context
The LD39080 belongs to the family of ultra low drop BiCMOS voltage regulators produced by STMicroelectronics. This series is designed for applications demanding high efficiency and low noise. The PT suffix indicates the adjustable version packaged in PPAK format, optimized for surface mount assembly. The device integrates advanced protection features while maintaining stability with small external components.
Replacement Considerations
Consult official STMicroelectronics documentation for confirmed substitute part numbers. Verify compatibility regarding pinout, package type, and electrical specifications before considering alternatives.
