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Product attributes Property Value
Manufacturer MCC (Micro Commercial Components)
Product Series
Packaging Bulk |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 30V
Voltage - Output (Min/Fixed) 1.8V
Voltage - Output (Max) -
Voltage Dropout (Max) 1.4V @ 1A
Current - Output 1A
Current - Quiescent (Iq) 5 mA
Current - Supply (Max) -
PSRR 60dB ~ 62dB (120Hz ~ 1kHz)
Control Features -
Protection Features Over Temperature
Operating Temperature -20°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Supplier Device Package SOT-223

The MCT1117C-1.8-TP is a fixed 1.8V low dropout linear regulator capable of delivering 1A of output current. Housed in a compact SOT-223 package, this LDO offers a dropout voltage of just 1.4V at full load, making it ideal for systems with tight voltage margins. With a quiescent current of 5mA and PSRR of 60-62dB, it provides clean, stable power for digital and analog circuits alike.

  • High Current Capacity: 1A output capability supports power-hungry digital loads like FPGAs and processors.
  • Low Dropout Voltage: 1.4V dropout at 1A allows operation from lower input rails, improving system efficiency.
  • Excellent Ripple Rejection: 60-62dB PSRR ensures clean output for noise-sensitive analog and RF circuits.
  • Compact SOT-223 Package: Small footprint with good thermal performance for space-constrained designs.

FPGA and DSP Core Power

Modern FPGAs and DSPs require precise 1.8V core supplies. The MCT1117C-1.8-TP provides a stable 1.8V output with 1A capability, ensuring reliable operation of digital logic while maintaining low output noise.

DDR Memory Termination

DDR2 and DDR3 memory systems often need a 1.8V rail for termination and VDDQ. This regulator's 1A current capability and fast transient response help maintain signal integrity in high-speed memory interfaces.

Portable Battery-Powered Devices

For battery-operated equipment requiring a regulated 1.8V rail, the low quiescent current of 5mA helps extend battery life while providing a stable supply for microcontrollers and sensors.

Industrial Sensor Interfaces

Industrial control systems with 3.3V or 5V buses can use this LDO to generate a clean 1.8V reference for analog-to-digital converters and sensor signal conditioning circuits, benefiting from the 60-62dB PSRR.

Networking Equipment

Routers and switches with 1.8V logic rails can rely on this regulator for consistent performance. The SOT-223 package allows for efficient heat dissipation in compact PCB layouts.

Automotive Infotainment

In automotive infotainment systems, the 1.8V rail for audio codecs and display controllers can be powered by this LDO, providing clean, ripple-free power despite noisy vehicle electrical environments.

Q: What is the output voltage of the MCT1117C-1.8-TP?
A: The fixed output voltage is 1.8V.
Q: What is the maximum output current?
A: It can deliver up to 1A of continuous output current.
Q: What is the input voltage range?
A: The input voltage must be at least 1.4V above the output (dropout) to maintain regulation; typical operation is from 3.2V up to 15V.
Q: What is the dropout voltage?
A: The dropout voltage is 1.4V at a 1A load.
Q: What is the quiescent current?
A: The quiescent current is typically 5mA.
Q: What package is available?
A: It comes in the SOT-223 surface-mount package.
Base Product Number : MCT1117C-1.8
1.8V 1A Fixed Output LDO Linear Regulator Low Dropout MCC SOT-223
Q: What is the output voltage of the MCT1117C-1.8-TP?
A: The fixed output voltage is 1.8V.
Q: What is the maximum output current?
A: It can deliver up to 1A of continuous output current.
Q: What is the input voltage range?
A: The input voltage must be at least 1.4V above the output (dropout) to maintain regulation; typical operation is from 3.2V up to 15V.
Q: What is the dropout voltage?
A: The dropout voltage is 1.4V at a 1A load.
Q: What is the quiescent current?
A: The quiescent current is typically 5mA.
Q: What package is available?
A: It comes in the SOT-223 surface-mount package.