The LM26480 is a multi-functional Power Management Unit, optimized for low-power digital applications. This device inte- grates two highly efficient 1.5A step-down DC/DC converters and two 300 mA linear regulators. The LM26480 is offered in a tiny 4 x 4 x 0.8mm LLP-24 pin package.
The LM26480 is a multi‑functional power‑management unit that integrates two 1.5 A step‑down DC/DC converters and two 300 mA linear regulators in a compact 4 × 4 × 0.8 mm LLP‑24 package. It is intended for low‑power digital applications, providing programmable output voltages and high efficiency.
Key specifications include up to 96 % conversion efficiency, 2 MHz PWM switching frequency, ±3 % feedback voltage accuracy, and a typical LDO dropout of 25 mV. The device offers extensive pin functions such as enable pins, synchronization input, and power‑on‑reset, and is supplied with detailed electrical characteristics and absolute‑maximum ratings.
| Buck converter output current | 1.5 A |
|---|---|
| Buck1 output voltage range | 0.8 V‑2.0 V |
| Buck2 output voltage range | 1.0 V‑3.3 V |
| Efficiency | up to 96 % |
| LDO output current | 300 mA |
| LDO dropout voltage (typ) | 25 mV |
| PWM switching frequency | 2 MHz |
Each buck converter can deliver up to 1.5 A.
The converters achieve up to 96 % efficiency.
The LDOs have a typical dropout of 25 mV.
The PWM switching frequency is 2 MHz.