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Product Detailed Parameters
- Description：IC REG LIN 2.9V 300MA 4-FLIPCHIP
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：2.9V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 300mA (Typ)
- Current - Output：300mA
- Current - Quiescent (Iq)：45 µA
- Current - Supply (Max)：-
- PSRR：70dB ~ 65dB (1kHz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Soft Start
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：4-UFBGA, FCBGA
- Supplier Device Package：4-FlipChip (.69x.69)
- Grade：-
- Qualification：-
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Overview
The LD39130SJ29R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 2.9 V with a maximum continuous output current of 300 mA. The device operates within an input voltage range of 1.4 V to 5.5 V and features a typical dropout voltage of 300 mV at full load. It utilizes a Flip-Chip-4 package for surface mount installation. The regulator supports an operating temperature range from -40 °C to +125 °C.
Feature Summary
- Fixed 2.9 V output voltage with high accuracy
- Capable of delivering up to 300 mA load current
- Operates with input voltages as low as 1.4 V
- Compact Flip-Chip-4 footprint for space-constrained designs
Applications
- Battery-powered portable electronics
- Low noise analog circuit power supplies
- Embedded system voltage regulation
- IoT sensor node power management
Procurement Notes
Verify the specific suffix 'R' against the manufacturer's latest datasheet to confirm packaging details, as suffixes often denote reel specifications or tape-and-reel quantities. Ensure the component meets RoHS compliance requirements for your target market. Confirm availability status directly with authorized distributors, as lead times may vary based on production cycles and regional stock levels.
Selection Notes
Select this component when a stable 2.9 V rail is required for sensitive digital or analog loads drawing up to 300 mA. The low dropout characteristic makes it suitable for systems where the battery voltage approaches the required output level. Consider the thermal performance in the Flip-Chip-4 package if the ambient temperature exceeds standard limits or if the input-output differential results in significant power dissipation.
Part Context
This part belongs to the LD39130S series of ultra-low quiescent current LDO regulators. The series is designed for applications requiring minimal standby current consumption while maintaining good line and load regulation. The SJ suffix typically indicates a specific output voltage option within the broader family, differentiated by internal resistor networks setting the fixed output level.
Replacement Considerations
LD39130SJ30R/F: Offers identical electrical characteristics but provides a fixed 3.0 V output instead of 2.9 V. Verify that the 0.1 V difference does not impact downstream circuit tolerance.
