Microchip tailors voltage regulators with short-circuit current foldback

Microchip Technology Inc. announced the MCP1754/MCP1754S low dropout regulators (LDOs), which feature a high PSRR of 70 dB at 1 kHz (typical), and a maximum output current of 150 mA at +125ºC junction temperature.

Both LDOs offer a high input voltage of 16V and an output voltage range of 1.8V to 5.5V, with standard output voltages of 2V, 2.5V, 2.8V, 3V, 3.3V, 4V and 5V, and output voltage tolerances of ±2.0 percent over the entire temperature range. The MCP1754 provides enhanced features, such as a shutdown input signal and a power-good output signal, while the MCP1754S is the baseline version of the device.

These LDOs are suited for electronic circuits, such as in GFCI and AFCI circuit-breaker designs, and in the automotive, medical and consumer electronics markets, such as in automotive power adapters, cell phones and medical devices.

Key highlights:

• High PSRR of 70 dB at 1 kHz (typical)
• Maximum output current of 150 mA at +125ºC junction temperature.
• Input voltage of 16V
• Output voltage range of 1.8V to 5.5V
• Standard output voltages of 2V, 2.5V, 2.8V, 3V, 3.3V, 4V and 5V
• Output voltage tolerances of ±2.0 percent over the entire temperature range.
• Shutdown input signal
• Power-good output signal

Pricing & Availability

The MCP1754/MCP1754S LDOs are available in 5-pin SOT-23, 3-lead SOT-23a and 3-lead SOT-89 packages, for $.042 each in 10,000-unit quantities. The devices are also available in 5-lead SOT-223 and 3-lead SOT-223 packages, for $0.47 each, and in 8-lead 2 mm x 3 mm DFN packages, for $0.47 each, all in 10,000-unit quantities.

Samples are available today, at http://www.microchip.com/get/4XTF. Volume-production quantities can be ordered today at http://www.microchip.com/get/TN09. For additional information, contact any Microchip sales representative or authorized worldwide distributor, or visit Microchip’s website at http://www.microchip.com/get/TTJ6.