TPS70258PWP

TPS70245, TPS70248 TPS70251, TPS70258 TPS70202 www.ti.com SLVS286E – JUNE 2000 – REVISED DECEMBER 2009 DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS FEATURES DESCRIPTION • The TPS702xx is a low dropout voltage regulator with integrated SVS (RESET, POR, or power on reset) and power good (PG) functions. These devices are capable of supplying 500mA and 250mA by regulator 1 and regulator 2 respectively. Quiescent current is typically 190μA at full load. Differentiated features, such as accuracy, fast transient response, SVS supervisory circuit (power on reset), manual reset input, and independent enable functions provide a complete system solution. 1 23 • • • • • • • • • • • • • • • Dual Output Voltages for Split-Supply Applications Independent Enable Functions (See Part Number TPS701xx for Sequenced Outputs) Output Current Range of 500mA on Regulator 1 and 250mA on Regulator 2 Fast Transient Response Voltage Options: 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, 3.3V/1.2V, and Dual Adjustable Outputs Open Drain Power-On Reset with 120ms Delay Open Drain Power Good for Regulator 1 and Regulator 2 Ultralow 190μA (typ) Quiescent Current 1μA Input Current During Standby Low Noise: 65μVRMS Without Bypass Capacitor Quick Output Capacitor Discharge Feature One Manual Reset Input 2% Accuracy Over Load and Temperature Undervoltage Lockout (UVLO) Feature 20-Pin PowerPAD™ TSSOP Package Thermal Shutdown Protection PWP PACKAGE (TOP VIEW) NC VIN1 VIN1 MR EN1 EN2 RESET GND VIN2 VIN2 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC VOUT1 VOUT1 VSENSE1/FB1 PG1 PG2 VSENSE2/FB2 VOUT2 VOUT2 NC NC = No internal connection TPS70251 PWP 5V VIN1 0.1 mF 10 mF VSENSE1 250 kW PG1 PG1 VIN2 MR MR >2 V EN1 2 V 250 kW >2 V 2 V RESET EN1 2 V PG2 EN1 MR EN2 VOUT2 VOUT2 2 V 250 kW VOUT2 2 V VSENSE2 2 V EN2 VOUT2 VOUT2 2.0 V OUT EN VO