TPS5602

TPS5602 DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER D Independent Dual Channels D Hysteretic Control for Fast Transient Response D 4.5-V to 25-V Input Voltage Range D Adjustable Output Voltage Down to 1.2 V D Synchronous Rectifier Enables Efficiencies of >95% D Minimized External Component Count D Separate Standby Control and Over Current Protection D Low Supply Current . . . 0.8 mA Typ D 30-Pin TSSOP D Low Standby Current (1-µA maximum) D EVM Available (TPS5602EVM-121) description DBT PACKAGE (TOP VIEW) SLVS217 – JUNE 1999 INV1 NC SOFTSTART1 NC CT NC GND REF STBY1 STBY2 VCC COMP SOFTSTART2 NC INV2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NC – No internal connection 30 LH1 29 OUT1_u 28 LL1 27 OUT1_d 26 OUTGND1 25 TRIP1 24 VCC SENSE 23 TRIP2 22 Vref5 21 REG5V_IN 20 OUTGND2 19 OUT2_d 18 LL2 17 OUT2_u 16 LH2 The TPS5602 is a dual-channel synchronous buck switch-mode power supply controller featuring very fast feedback control and minimized component count. By using the hysteretic control method, it is ideal for high-transient current applications, such as ’C6000 and multiple ’C54x DSPs. The TPS5602 is designed specifically for DSP applications that require high efficiency. Since both channels are independent, the up and down power sequencing can be easily achieved by properly setting the standby pins. The wide input voltage and adjustable output voltage make the TPS5602 suitable for many applications. typical design 5V GND + C3 R3 R2 C1 D1 C4 L1 OUT1 1.8 V C7 ...