The UP0104S is a dual-output, constant-on-time (COT) synchronous DC-DC buck controller. It is designed to provide high-efficiency, low-output-voltage power supplies with fast transient response. Its typical applications include:
It is often a drop-in replacement or equivalent to RT8207, ISL6545, or similar dual-channel controllers.
The uP0104 series represents a robust solution for power regulation in consumer electronics. While newer LDOs offer lower dropout voltages and lower quiescent currents, the uP0104 remains a cost-effective and reliable choice for general-purpose voltage regulation where efficiency requirements are moderate. Up0104s Datasheet
The UP0104S is a compact power-management IC (PMIC) designed for small consumer electronics and embedded devices. It integrates multiple regulated outputs and protection features to simplify power-supply design in battery-powered and USB-powered systems.
The UP0104S is compatible with:
Always compare the full datasheet before substituting.
VIN (12V) → VCC (pin1) EN1/EN2 → logic high or resistor divider from VCCChannel 1: UGATE1 (pin9) → high-side MOSFET gate PHASE1 (pin7) → MOSFET source & inductor LGATE1 (pin5) → low-side MOSFET gate BOOT1 (pin8) → 0.1µF cap to PHASE1 FB1 (pin3) → resistor divider from VOUT1 COMP1 (pin4) → RC series to FB1 UP0104S Datasheet: A Comprehensive Guide to the Dual
Channel 2 similar using pins 10–14.
To use the UP0104S safely, you must respect the limits defined in the datasheet. Exceeding these values will cause immediate destruction of the IC.