The XC6402 series are precise, low noise, high current, positive voltage low dropout regulators with built-in voltage detector. They are fabricated using Torex’s CMOS process. The series features a voltage reference, an error amplifier, a current limiter, a voltage detector and a phase compensation circuit plus a driver transistor. The output voltage of the LDO and detect voltage of the detector is selectable in 50mV increments within the range of 0.8V to 5.0V. With a low ON resistance driver transistor built-in, batteries can be used until input-output voltage differential is minimal and can accordingly be used for a longer time. The series is also compatible with low ESR ceramic capacitors which give added output stability. The series provides options to the user to select from a variety of circuit features, such as detector monitoring, detector output logic, EN pin input logic, and internal pull-up / down resistance (semi-custom). The IC's internal regulator circuit can be placed in stand-by mode via the EN function (XC6402C series). In the stand-by mode, power consumption is greatly reduced. The XC6402F series offers the option of a delay on the detector output.
The XC6402 series are precise, low‑noise, high‑current LDO regulators with built‑in voltage detector, fabricated using Torex’s CMOS process. They offer selectable output and detect voltages from 0.8 V to 5.0 V in 50 mV steps and support low‑ESR ceramic capacitors for stability.
The document provides detailed electrical characteristics, pin configurations, package options (SOT‑25, SOT‑89‑5, USP‑6B), and marking rules, along with application examples such as CD/DVD drives, portable AV equipment and battery‑powered devices.
| Maximum Output Current | More than 700 mA (800 mA limit) |
|---|---|
| Dropout Voltage | 50 mV @ 100 mA, 100 mV @ 200 mA |
| Maximum Operating Voltage | 1.5 V ~ 6.0 V |
| VR Output Voltage Range | 0.8 V ~ 5.0 V (50 mV increments) |
| VD Detect Voltage Range | 0.8 V ~ 5.0 V (50 mV increments) |
| Supply Current (typical) | 35 µA |
| Ripple Rejection | 60 dB @ 1 kHz |
| Operating Temperature Range | -40 °C ~ +85 °C |
The series can deliver more than 700 mA, with an absolute limit of 800 mA.
The dropout voltage is 50 mV when the load current is 100 mA.
The devices are available in SOT‑25, SOT‑89‑5 and USP‑6B packages.
The EN pin controls the regulator’s on/off state; pulling it high enables the device, pulling it low puts it in standby mode.