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Product Detailed Parameters
- Description：IC REG LIN 1.1V 200MA 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)：1.1V
- 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：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SOT-323-5
- Grade：-
- Qualification：-
Download product information
Overview
The LDK120C11R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.1V 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 100mA load. Quiescent current is specified at a maximum of 60µA, with shutdown consumption below 1µA when enabled. It includes internal overcurrent and thermal protection, supports ceramic output capacitors, and is housed in a SOT-323-5 package.
Feature Summary
- Ultra-low dropout performance for efficient power management in battery-operated systems
- Logic-controlled enable pin allows for deep shutdown mode with minimal current drain
- Integrated short-circuit current limiting and thermal overload protection for robust operation
Applications
- Low-power portable consumer electronics requiring stable 1.1V rails
- Battery-powered sensor nodes and IoT devices
- Power supply stages for microcontrollers and digital logic circuits
Procurement Notes
Verify the specific suffix 'C11R' corresponds to the 1.1V fixed output variant and SOT-323-5 packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against your assembly process specifications. Ensure the ordering part number matches the exact manufacturer designation to avoid functional mismatches.
Selection Notes
Select this component when a precise 1.1V output is required with minimal board space constraints. The SOT-323-5 package offers a compact footprint suitable for dense layouts. Consider the 200mA current limit and 1.9V minimum input voltage to ensure adequate headroom for your specific application's load profile and input source characteristics.
Part Context
This device belongs to the LDK120 series of ultra-low-dropout linear regulators designed for low-noise and low-quiescent current applications. The series covers various fixed and adjustable output voltages, catering to diverse power management needs in portable and industrial environments while maintaining high efficiency through minimized voltage drop.
Replacement Considerations
Cross-reference with other LDK120 series variants for different fixed output voltages if system requirements change. Verify pin compatibility and electrical parameters before substituting with generic LDOs from other manufacturers.
