XC6371/XC6372/XC6373 series PWM controlled step-up DC/DC converters
The XC6371/XC6372/XC6373 series are PWM‑controlled and PWM/PFM‑controlled step‑up DC/DC converters. They are designed for portable products such as cellular phones, pagers, palmtops, cameras and video recorders. The built‑in switching transistor allows the circuit to be built with only a coil, a diode and a capacitor.
Key features include selectable output voltage from 2.0 V to 7.0 V in 100 mV steps, multiple oscillation‑frequency options, soft‑start protection, low‑power chip‑enable or separate VDD pins, and small SOT‑89 family packages. Electrical characteristics such as maximum output current (100 mA typical) and efficiency (≈85 % typical) are provided for each variant.
| Output Voltage Range | 2.0 V – 7.0 V (100 mV steps) |
|---|---|
| Oscillation Frequency Options | 50 kHz, 100 kHz, 180 kHz (XC6371/6372); 30 kHz (XC6373) |
| Maximum Output Current (typical) | 100 mA @ Vin=3.0 V, Vout=5.0 V |
| Operation Start Voltage Range | 0.9 V – 10 V |
| Package Types | SOT‑89, SOT‑89‑5, USP‑6B (5‑lead) |
The output voltage can be selected from 2.0 V to 7.0 V in 100 mV increments.
XC6371 and XC6372 support 50 kHz, 100 kHz, or 180 kHz, while XC6373 operates at 30 kHz.
Typical maximum output current is 100 mA at Vin = 3.0 V and Vout = 5.0 V.
The devices are available in 5‑lead SOT‑89, SOT‑89‑5, and USP‑6B packages.