TPS62420

The TPS62420 device is a synchronous dual step-down DC-DC converter optimized for battery powered portable applications. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries.

Features of the TPS62420 are:(1)high efficiency-up to 95%;(2)VIN range from 2.5 V to 6 V;(3)2.25 MHz fixed frequency operation;(4)output current 2 and 800 mA;(5)adjustable output voltage from 0.6V to VIN;(6)pin selectable output voltage supports simple dynamic voltage scaling;(7)easyscale optional one-pin serial interface;(8)power save mode at light load currents;(9)180° out of phase operation;(10)output voltage accuracy in PWM mode ±1%;(11)typical 32-mA quiescent current for both converters;(12)100% duty cycle for lowest dropout;(13)available in a 10-Pin QFN (3*3mm).

The absolute maximum ratings of the TPS62420 can be summarized as:(1):the symbol is VI,the parameter is input voltage range on VIN,the value is -0.3 to 7,the unit is V;(2):the symbol is VI,the parameter is voltage range on EN, MODE/DATA, DEF_1,the value is -0.3 to VIN +0.3, 7,the unit is V;(3):the parameter is current into MODE/DATA,the value is 0.5,the unit is mA;(4):the symbol is VI,the parameter is voltage on SW1, SW2,the value is -0.3 to 7,the unit is V;(5):the symbol is VI,the parameter is voltage on ADJ2, FB1,the value is -0.3 to VIN +0.3, 7,the unit is V;(6):the symbol is Tj,the parameter is maximum operating junction temperature,the value is 150,the unit is ;(7):the symbol is Tstg,the parameter is storage temperature range,the value is -65 to 150,the unit is ;(8):the parameter is ESD rating machine model,the value is 200,the unit is V;(9):the parameter is HBM human body model,the value is 2,the unit is kV;(10):the parameter is CDM charge device model,the value is 1,the unit is kV.