XC6604A151ER-G

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

The XC6604A151ER-G is a fixed-output low dropout regulator manufactured by Torex Semiconductor. It provides a nominal output voltage of 1.5V with a maximum output current of 1A. The device operates within an input voltage range of 0.5V to 3.0V and requires a bias voltage between 2.5V and 6.0V. Key electrical characteristics include a typical ripple rejection ratio of 75dB at 1kHz, a supply bias current of 100μA, and a standby current of 0.01μA. It features adjustable current limiting via an external resistor, thermal shutdown, and under-voltage lockout. The component is housed in a USP-6C package.

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

• Supports high-speed operation with ultra-low on-resistance for efficient current delivery at low voltages.
• Includes adjustable current limit functionality via the ILIM pin combined with foldback protection.
• Features internal soft-start circuitry to minimize inrush current during startup.
• Provides rapid output capacitor discharge through an internal switch when disabled.

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

• Smart phones
• Digital still cameras
• Note PCs
• Tablet PCs

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

Verify that the specific part number matches the required output voltage and package type. Confirm compliance with environmental standards such as RoHS. Ensure adequate thermal management is designed into the PCB layout, as power dissipation limits apply. Check datasheet specifications for minimum capacitance requirements to maintain stability.

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

Select this component for applications requiring stable regulation from very low input voltages. The Type A designation indicates the presence of a soft-start function, which is critical for managing inrush currents. Consider the USP-6C package constraints regarding heat dissipation and mounting strength. Verify that the load current does not exceed the thermal limits defined in the absolute maximum ratings.

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

This device belongs to the XC6604 series of low voltage input regulators. The series utilizes laser trimming technology to achieve precise output voltage accuracy. It integrates N-ch driver transistors and multiple protection circuits including thermal shutdown and UVLO. The design allows for the use of ceramic capacitors for output stabilization.

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

XC6604B151ER-G

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

How is the current limit adjusted?

The current limit can be adjusted by connecting an external resistor to the ILIM pin. The value of this resistor determines the threshold at which the foldback circuit activates.

What happens to the output voltage when the IC is disabled?

When the CE pin is pulled low, the IC enters stand-by mode. An internal switch discharges the electric charge at the output capacitor, causing the VOUT pin to quickly return to the VSS level.