the tps5103 is a synchronous buck dc/dc controller, designed for notebook pc system power.
The TPS5103 is a multiple‑mode synchronous buck DC‑DC controller designed for notebook PC power systems. It offers three user‑selectable operation modes—hysteretic, fixed‑frequency PWM, and skip—to balance performance and efficiency across a range of load conditions.
The datasheet includes electrical characteristics, absolute maximum ratings, recommended operating conditions, pin descriptions, mechanical dimensions, and application notes such as soft‑start, standby mode, UVLO, and 5‑V switch behavior.
| Input voltage range | 4.5 V to 25 V |
|---|---|
| Adjustable output voltage | Down to 1.2 V |
| Efficiency | 95 % |
| Standby current | 0.5 mA typical |
The TPS5103 accepts an input voltage from 4.5 V up to 25 V.
It supports three user‑selectable operation modes: hysteretic, fixed‑frequency PWM, and skip.
Typical standby current is 0.5 mA.
The device achieves about 95 % efficiency.