FAN2558MP13X

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN2558MP13X is a fixed-output low dropout linear regulator manufactured by onsemi, providing a stable 1.3V output with a maximum load current of 180mA. It operates within an input voltage range of 2.7V to 5.5V and features a typical ground current of 100µA. The device incorporates thermal shutdown and current limit protection mechanisms. It utilizes a 6-lead MLP package measuring 2x2mm. Standard output accuracy is ±2%, with optional ±1% versions available upon request.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated power good indicator with open-drain output for system status monitoring
• Fast enable capability optimized for CDMA applications
• Ultra-low noise operation supported by external bypass capacitor
• High ripple rejection performance with excellent line and load regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Processor power-up sequencing
• PDAs and cell phones
• Portable electronic equipment
• PCMCIA Vcc and Vpp regulation/switching

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix to confirm the package type matches the design requirements. Confirm that the component meets RoHS compliance standards. Check the datasheet revision date to ensure alignment with current manufacturing specifications. Validate that the part number corresponds to the fixed 1.3V output variant rather than adjustable or other voltage options.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a compact footprint is required alongside moderate current delivery. Ensure the application benefits from the fast enable feature for CDMA systems. Verify that the output capacitor ESR falls within the stable range of 0 to 300mΩ. Consider the thermal resistance characteristics of the PCB layout to manage junction temperature effectively under load.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the FAN2558/FAN2559 family of low voltage CMOS LDOs. The family includes variants with fixed outputs, adjustable outputs, and low-noise configurations. These regulators are designed for battery-powered systems requiring high ripple rejection and low power consumption. The MLP-6 package provides a small form factor suitable for space-constrained portable designs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

FAN2558MP10X

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the Power Good (PG) pin?

The PG pin is an open-drain output that goes LOW when the output voltage drops below 95% of its nominal value, indicating a fault condition such as input dropout or overheating.

How does the Enable pin operate?

Applying 2V or greater enables the regulator, while 0.4V or less disables it, reducing quiescent current to less than 1µA. Floating the pin may cause erratic operation.

What protection features are included?

The device includes thermal shutdown, which disables the output at 150°C and re-enables it after cooling by 10°C, and current limit protection for safe short-circuit conditions.