TPS5210

TPS5210 PROGRAMMABLE SYNCHRONOUSĆBUCK REGULATOR CONTROLLER D ±1% Reference Over Full Operating Temperature Range D Synchronous Rectifier Driver for Greater Than 90% Efficiency D Programmable Reference Voltage Range of 1.3 V to 3.5 V D User−Selectable Hysteretic Type Control D Droop Compensation for Improved Load Transient Regulation D Adjustable Overcurrent Protection D Programmable Softstart D Overvoltage Protection D Active Deadtime Control D Power Good Output D Internal Bootstrap Schottky Diode D Low Supply Current . . . 3-mA Typ IOUT DROOP OCP VHYST VREFB VSENSE ANAGND SLOWST BIAS LODRV LOHIB DRVGND LOWDR DRV SLVS171A − SEPTEMBER 1998 − REVISED MAY 1999 DW OR PWP PACKAGE (TOP VIEW) 1 28 PWRGD 2 27 VID0 3 26 VID1 4 25 VID2 5 24 VID3 6 23 VID4 7 22 INHIBIT 8 21 IOUTLO 9 20 LOSENSE 10 19 HISENSE 11 18 BOOTLO 12 17 HIGHDR 13 16 BOOT 14 15 VCC description The TPS5210 is a synchronous-buck regulator controller which provides an accurate, programmable supply voltage to microprocessors. An internal 5-bit DAC is used to program the reference voltage to within a range of 1.3 V to 3.5 V. The output voltage can be set to be equal to the reference voltage or to some multiple of the reference voltage. A hysteretic controller with user-selectable hysteresis and programmable droop compensation is used to dramatically reduce overshoot and undershoot caused by load transients. Propagation delay from the comparator inputs to the output drivers ...