Microchip Technology MCP1804T-J002I/DB

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 28V
Voltage - Output (Min/Fixed) 18V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.85V @ 100mA
Current - Output 150mA
Current - Quiescent (Iq) 125 µA
Current - Supply (Max) -
PSRR 50dB (1kHz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Supplier Device Package SOT-223-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MCP1804T-J002I/DB from Microchip Technology is a fixed 18V low-dropout regulator delivering 150mA. With an input range up to 28V and dropout of just 0.85V at 100mA, it excels in high-voltage industrial and automotive environments. The SOT-223-3 package offers excellent thermal performance, while 125µA quiescent current supports always-on applications.

  • High Input Tolerance: Handles up to 28V, ideal for 24V systems.
  • Low Dropout: 0.85V at 100mA maximizes efficiency in high-voltage differentials.
  • Thermal Efficiency: SOT-223 package dissipates heat effectively for 150mA loads.
  • Stable Output: 50dB PSRR at 1kHz rejects switching noise.

Automotive ECU Power

18V output from a 24V truck battery (with 28V max input) provides stable power for sensors and microcontrollers in heavy-duty vehicles.

Industrial Sensor Transmitters

150mA and 0.85V dropout allow operation from 24V industrial loops, powering 4-20mA transmitters with clean 18V rails.

Telecom Line Cards

High input tolerance handles -48V to +24V conversions, delivering 18V for line driver ICs in networking equipment.

Solar Charge Controllers

Regulates unregulated panel output (up to 28V) down to 18V for battery charging logic in off-grid systems.

HVAC Actuator Drives

Provides 18V for valve actuators in building automation, with 50dB PSRR at 1kHz rejecting motor noise.

Medical Device Power

Stable 18V rail for precision pumps and monitors, with low quiescent current for battery backup modes.

Q: What is the output voltage?
A: Fixed 18V output.
Q: What is the maximum output current?
A: 150mA.
Q: What is the input voltage range?
A: Up to 28V (absolute maximum).
Q: What is the dropout voltage?
A: 0.85V at 100mA load.
Q: What is the quiescent current?
A: 125µA typical.
Q: What package is available?
A: SOT-223-3.
Base Product Number : MCP1804
150mA 18V Automotive High Voltage LDO Linear Regulator Microchip SOT-223-3
Q: What is the output voltage?
A: Fixed 18V output.
Q: What is the maximum output current?
A: 150mA.
Q: What is the input voltage range?
A: Up to 28V (absolute maximum).
Q: What is the dropout voltage?
A: 0.85V at 100mA load.
Q: What is the quiescent current?
A: 125µA typical.
Q: What package is available?
A: SOT-223-3.