ADP2126

Data Sheet Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters ADP2126/ADP2127 FEATURES 1.20 V and 1.26 V fixed output voltage options Clock signal enable Logic signal enable also available on certain models 6 MHz operating frequency Spread spectrum frequency modulation to reduce EMI 500 mA continuous output current Input voltage: 2.1 V to 5.5 V 0.3 μA (typical) shutdown supply current Pin-selectable power-saving mode Compatible with tiny multilayer inductors Internal synchronous rectifier Internal compensation Internal soft start Output-to-ground short-circuit protection Current-limit protection Undervoltage lockout Thermal shutdown protection 0.330 mm height (maximum), 6-ball BUMPED_CHIP (ADP2126) 0.200 mm height (maximum), 6-pad EWLP (ADP2127) APPLICATIONS Mobile phones Digital still/video cameras Digital audio Portable equipment Camera modules Image stabilization systems GENERAL DESCRIPTION The ADP2126/ADP2127 are high frequency, step-down, dc-todc converters optimized for portable applications in which board area and battery life are critical constraints. The fixed 6 MHz operating frequency enables the use of tiny ceramic inductors and capacitors and the regulators use spread spectrum frequency modulation to reduce EMI. Additionally, synchronous rectification improves efficiency and results in fewer external components. At high load currents, the ADP2126/ADP2127 use a voltage regulating pulse-width modulation (PWM) mode that maintains a constan...