XC6401 series are highly accurate, dual, low noise, CMOS LDO voltage regulators. Performance features of the series includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times. The XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase compensators internally. The XC6401’s current limiters' foldback circuit also operates as a short protect for the output current limiter. The output voltage for each regulator is set independently by laser trimming. Voltages are selectable in 50mV steps within a range of 0.8V to 5.0V. The XC6401 series is also fully compatible with low ESR ceramic capacitors, reducing cost and improving output stability. This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption. The XC6401 series is available in the SOT-26W or USP-6B, USP-6C ‘chip-scale’ package.
The XC6401 series are highly accurate, dual, low‑noise CMOS LDO voltage regulators. Each regulator’s output voltage can be set independently in 50 mV steps from 0.8 V to 5.0 V, and the devices are fully compatible with low‑ESR ceramic capacitors for improved stability.
These regulators are offered in ultra‑small SOT‑26W, USP‑6B and USP‑6C packages and feature low dropout (100 mV at 100 mA), high ripple rejection (70 dB at 1 kHz), and an EN pin that allows independent power‑off of each output. Typical applications include mobile phones, portable audio equipment, PDAs, cameras and other battery‑powered devices.
| Output Voltage Range | 0.8 V – 5.0 V (50 mV steps) |
|---|---|
| Maximum Output Current | >150 mA (300 mA limit) |
| Dropout Voltage (100 mA) | 100 mV |
| Ripple Rejection (PSRR) | 70 dB @1 kHz |
| Standby Current | <0.1 µA (typical) |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Options | SOT‑26W, USP‑6B, USP‑6C |
| Input Voltage Range | 1.5 V – 6.0 V |
| Power Dissipation (USP‑6B/C) | 100 mW |
Each regulator can deliver more than 150 mA, with a 300 mA absolute limit.
The devices are offered in SOT‑26W, USP‑6B and USP‑6C chip‑scale packages.
The dropout voltage is specified as 100 mV at a 100 mA load.
The regulators operate from –40 °C up to +85 °C.