The ADP2126/ADP2127 is a data sheet for ultralow profile, 500mA, 6MHz, synchronous step-down DC-to-DC converters. It features 1.20V and 1.26V fixed output voltage options, 6MHz operating frequency, and 500mA continuous output current.
The ADP2126 and ADP2127 are high‑frequency, step‑down DC‑to‑DC converters optimized for portable applications where board area and battery life are critical. They operate at a fixed 6 MHz frequency, allowing the use of tiny multilayer inductors, and feature synchronous rectification, spread‑spectrum modulation, and a low‑power shutdown mode.
The devices include internal compensation, soft‑start, undervoltage lockout, output‑to‑ground short‑circuit protection, cycle‑by‑cycle over‑current protection, and thermal shutdown (PWM mode only). Various package options are offered, including a 6‑ball bumped chip (ADP2126) and a 6‑pad embedded wafer‑level package (ADP2127).
| Input voltage range | 2.1 V to 5.5 V |
|---|---|
| Continuous output current | 500 mA |
| Fixed output voltage options | 1.20 V or 1.26 V |
| Operating frequency | 6 MHz |
| Shutdown supply current (typical) | 0.3 µA |
| Thermal shutdown threshold (PWM mode) | 146 °C |
The converters operate with an input voltage from 2.1 V up to 5.5 V.
Both devices can deliver up to 500 mA of continuous output current.
The typical shutdown supply current is 0.3 µA.