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Product Detailed Parameters
- Description：IC REG LIN 1.5V 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)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 300mA
- Current - Output：300mA
- Current - Quiescent (Iq)：50 µA
- Current - Supply (Max)：85 µA
- PSRR：62dB (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 (0.79x0.79)
- Grade：-
- Qualification：-
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Overview
The LD39030SJ15R is a low noise linear voltage regulator from STMicroelectronics, providing a fixed 1.5 V output with a maximum current of 300 mA. It operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 200 mV at full load. The device utilizes a flip-chip package with dimensions of 0.79 x 0.79 mm. Key electrical characteristics include a quiescent current of 20 µA at no load and 40 µA at 300 mA load, with shutdown consumption below 1 µA. Output voltage tolerance is ±2.0% at 25 °C, and power supply rejection ratio (PSRR) is typically 62 dB at low frequencies.
Feature Summary
- Ultra-low dropout voltage capability for efficient battery-powered operation
- Very low quiescent current with logic-controlled electronic shutdown
- Low noise performance suitable for sensitive analog circuits
- Internal soft-start and protection against short-circuit and thermal overload
Applications
- Low power battery-operated applications
- Portable devices requiring space-saving flip-chip packaging
- Noise-sensitive circuit power supplies
Procurement Notes
Verify the specific suffix '15R' confirms the 1.5 V fixed output voltage variant. Confirm package type matches the 4-bump flip-chip format. Check component status as some LD39030 variants may be obsolete; ensure availability aligns with design requirements before finalizing procurement plans.
Selection Notes
Select this component when a compact footprint and low noise are critical alongside moderate current delivery. Ensure the input voltage remains above the minimum threshold to maintain regulation. Verify that the output capacitor meets stability requirements for ceramic types. Compare against standard DFN packages if larger board space is available.
Part Context
This part belongs to the LD39030 family of low-dropout regulators designed for ultra-low power consumption. Unlike the DFN-4 packaged versions, the SJ suffix indicates a flip-chip configuration optimized for minimal surface area. The family supports various fixed output voltages ranging from 0.8 V to 4.5 V in specific steps.
Replacement Considerations
Analog Devices ADP172ACBZ-1.0-R7 is listed as a similar replacement for the LD39030SJ10R variant. Verify pinout compatibility and electrical specifications before substituting other LD39030 family members or different manufacturers.
