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Product Detailed Parameters
- Description：IC REG LIN 1.8V 150MA SOT-323-5
- 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)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.21V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：110 µA
- PSRR：-
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SOT-323-5
- Grade：-
- Qualification：-
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Overview
The LD59015C18R is a fixed-output linear voltage regulator from STMicroelectronics, providing a stable 1.8V output with a maximum current capacity of 150mA. It operates within an input voltage range of 2.4V to 5.5V and features a typical dropout voltage of 150mV. The device incorporates low quiescent current consumption, high power supply rejection ratio (PSRR), and low noise characteristics. Integrated protection mechanisms include short-circuit constant current limiting and thermal shutdown. It is housed in a compact SOT-323-5 surface-mount package and supports an operating temperature range from -40°C to 125°C.
Feature Summary
- Logic-controlled electronic shutdown function enables deep sleep mode for extended battery life
- High power supply rejection ratio ensures clean power delivery for sensitive analog circuits
- Compatible with small ceramic capacitors for stable operation without bulky components
- Integrated thermal and current limiting protects the device under fault conditions
Applications
- Mobile phones and portable communication devices
- Personal digital assistants (PDAs)
- Cordless telephones
- Battery-powered sensor systems
Procurement Notes
Verify the specific suffix 'C18R' corresponds to the 1.8V fixed output variant and SOT-323-5 packaging. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check for any recent product change notices regarding manufacturing reshaping or end-of-life announcements that may affect long-term availability.
Selection Notes
Select this component when a low-noise, high-PSRR LDO is required for RF or analog sections in battery-operated devices. Ensure the input voltage remains above 2.4V and the load current does not exceed 150mA. Consider the enable pin functionality if system power sequencing requires controlled startup and shutdown states.
Part Context
This part belongs to the LD59015 family of 150mA low-dropout regulators designed for low-power applications. The family offers various fixed output voltages ranging from 1.2V to 3.3V in 100mV steps. All variants share similar electrical characteristics including low quiescent current and high PSRR, differing primarily in output voltage tolerance and package options.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative LDOs by matching output voltage, current rating, package type, and stability requirements with ceramic capacitors.
