ADP2164

Data Sheet ADP2164 6.5 V, 4 A, High Efficiency, Step-Down, DC-to-DC Regulator FEATURES TYPICAL APPLICATIONS CIRCUIT ► 4 A continuous output current ► 43 mΩ and 29 mΩ integrated FET ► ±1.5% output accuracy ► Input voltage range: 2.7 V to 6.5 V ► Output voltage: 0.6 V to VIN ► Switching frequency ► Fixed frequency: 600 kHz or 1.2 MHz ► Adjustable frequency: 500 kHz to 1.4 MHz ► Synchronizable from 500 kHz to 1.4 MHz ► Selectable synchronize phase shift: 0° or 180° ► Current mode architecture ► Precision enable input ► Power-good output ► Voltage tracking input ► Integrated soft start ► Internal compensation ► Starts up into a precharged output ► UVLO, OVP, OCP, and thermal shutdown ► Available in 16-lead, 4 mm × 4 mm LFCSP package ► Supported by ADIsimPower™ design tool Figure 1. APPLICATIONS ► Point-of-load conversion ► Communications and networking equipment ► Industrial and instrumentation ► Consumer electronics Figure 2. Efficiency vs. Output Current GENERAL DESCRIPTION The ADP2164 is a 4 A, synchronous, step-down, dc-to-dc regulator in a compact 4 mm × 4 mm LFCSP package. The regulator uses a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The input voltage range of the ADP2164 is 2.7 V to 6.5 V. The output voltage of the ADP2164 is adjustable from 0.6 V to the input voltage (VIN). The ADP2164 is also available in six preset output voltage options: 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1....