FEATURES
3 A continuous output current 75 mΩ and 40 mΩ integrated FET ±1.5% output accuracy Input voltage range from 2.3 V to 5.5 V Output voltage from 0.6 V to VIN 600 kHz or 1.2 MHz fixed switching frequency Synchronizable between 600 kHz and 1.4 MHz Selectable synchronize phase shift: 0o or 180o Selectable PWM or PFM mode operation 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 APPLICATIONS
Point of load conversion Communications and networking equipments Industrial and instrumentation Consumer electronics Medical appliances C1 0.1µF R1 10Ω R2 10kΩ 16 15 14 13 VIN CIN 5V 100µF X5R, 6.3V PGOOD EN VIN PVI N 1 SYNC/MODE 2 FREQ 3 TRK ADP2118 4 FB PVIN 12 SW 11 SW 10 SW 9 L 1µH VOUT COUT 100µF 3.3V 3A X5R, 6.3V GND PGND PGND PGND RBOT RTOP 2.21kΩ 10kΩ 5678 Figure 1.
Analog Devices
