The XCM526 series is a multi-module IC which includes a step-down DC/DC controller IC and P-channel power MOSFET. The IC enables a high efficiency, stable power supply with an output current up to 3A. Low ESR electrolytic capacitors such as an OS-CON aluminum solid capacitor, a tantalum Neo capacitor can be used as an output capacitor. In case of using a ceramic capacitor, RSENSE is needed to be placed on. The XCM526 series has a 0.9V (±1.5%) reference voltage, and using externally connected resistors, the output voltage can be set freely. With an internal switching frequency of 500kHz and 1.0MHz, small external components can also be used. The XCM526A has a fixed PWM control for low output voltage ripple, and the XCM526B has a PWM/PFM control, which automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions. As for the soft-start time, there are two types, one is internally set to 4ms and the other can be externally set-up. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 2.3V (TYP.) or lower.
The XCM526 series from Torex integrates a step‑down DC/DC controller IC with a P‑channel power MOSFET, delivering up to 3 A output current over an input range of 4 V to 16 V. It offers selectable PWM or PWM/PFM control, built‑in UVLO protection, and a reference voltage of 0.9 V (+1.5%).
The datasheet includes a general description, electrical characteristics, pin configuration, typical application circuits, ordering information, and marking rules, allowing designers to quickly select components and set output voltage using external resistor dividers.
| Maximum Output Current | 3 A |
|---|---|
| Operating Input Voltage Range | 4.0 V ~ 16.0 V |
| Switching Frequency | 500 kHz, 1.0 MHz |
| Reference Voltage | 0.9 V (+1.5 %) |
| Package | USP‑12B01 (2.3 mm × 2.8 mm) |
| On‑Resistance (Ves = –4.5 V) | 70 mΩ |
The XCM526 series can deliver up to 3 A of output current.
It operates with an input voltage between 4.0 V and 16.0 V.
The device includes short‑circuit protection and an under‑voltage lock‑out (UVLO) that turns off the internal MOSFET when the input drops below 2.3 V.