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Product Detailed Parameters
- Description：IC REG LINEAR 1V 200MA 6-DFN
- 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)：1V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：100 µA
- PSRR：55dB (120Hz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：6-XFDFN
- Supplier Device Package：6-DFN (1.2x1.3)
- Grade：-
- Qualification：-
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Overview
The LDK120PU10R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 100mV at a 100mA load. Key electrical parameters include a maximum quiescent current of 60µA, a maximum supply current of 100µA, and a power supply rejection ratio (PSRR) of 55dB across the 120Hz to 10kHz frequency range. The component is housed in a compact 6-DFN package measuring 1.2x1.3mm.
Feature Summary
- Logic-controlled enable function allows for electronic shutdown with total current consumption lower than 1 µA
- Internal protection mechanisms include constant current limiting for short-circuit conditions and thermal protection
- Designed for stability when used with small external ceramic capacitors on the output
Applications
- Low-power battery-operated systems requiring extended runtime
- Portable consumer electronics and wearable devices
- Powering sensitive analog circuits or microcontrollers from single-cell batteries
Procurement Notes
Verify the specific suffix 'PU10R' against official datasheets to confirm the 1V fixed output voltage and 6-DFN packaging configuration. Ensure compatibility with standard surface-mount assembly processes for the 1.2x1.3mm footprint. Confirm that the selected supplier sources directly from authorized channels to guarantee RoHS3 compliance and authenticity.
Selection Notes
Select this component when a stable 1V rail is required from a 1.9V to 5.5V source with minimal board space. The low quiescent current makes it suitable for always-on applications where standby power is critical. Verify that the application load does not exceed 200mA and that the input voltage remains within the specified operating range to ensure proper regulation.
Part Context
This part belongs to the LDK120 series of ultra-low dropout regulators designed for cost-effective and space-saving solutions. The series offers various fixed output voltages and packages, including SOT23-5L and DFN6. The LDK120PU10R specifically targets applications needing a precise 1V output in a miniature form factor, complementing other variants like the LDK120M10R which uses a different package.
Replacement Considerations
Compatible substitutes within the same family include LDK120M10R (SOT-23-5 package) and LDK120PUxxR variants with different fixed voltages. Cross-referencing pinouts and thermal characteristics is essential when replacing components with different package types.
