TPS70451PWP

TPS70445, TPS70448 TPS70451, TPS70458 TPS70402 www.ti.com SLVS307F – SEPTEMBER 2000 – REVISED APRIL 2010 DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS Check for Samples: TPS70445, TPS70448, TPS70451, TPS70458, TPS70402 FEATURES DESCRIPTION • The TPS704xx family of devices consists of dual-output, low-dropout voltage regulators with integrated SVS (RESET, POR, or power on reset) and power good (PG) functions. These devices are capable of supplying 1 A and 2 A by regulator 1 and regulator 2 respectively. Quiescent current is typically 185 mA 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 TPS703xx for Sequenced Outputs) Output Current Range of 1 A on Regulator 1 and 2 A on Regulator 2 Fast Transient Response Voltage Options: 3.3-V/2.5-V, 3.3-V/1.8-V, 3.3-V/1.5-V, 3.3-V/1.2-V, and Dual Adjustable Outputs Open Drain Power-On Reset with 120-ms Delay Open Drain Power Good for Regulator 1 and Regulator 2 Ultralow 185mA (typ) Quiescent Current 2mA Input Current During Standby Low Noise: 78mVRMS Without Bypass Capacitor Quick Output Capacitor Discharge Feature One Manual Reset Input 2% Accuracy Over Load and Temperature Undervoltage Lockout (UVLO) Feature 24-Pin PowerPAD™ TSSOP Package Thermal Shutdown Protection PWP PACKAGE (TOP VIEW) GND/HEATSINK GND/HEATSINK 1 24 VIN1 2 23 VOUT1 VIN1 3 22 VOUT1 NC 4 21 VSENSE1/FB1 MR 5 20 NC EN1 6 19 PG1 EN2 7 18 PG2 RESET 8 17 NC GND 9 16 VSENSE2/FB2 VIN2 10 15 VOUT2 VIN2 11 14 VOUT2 GND/HEATSINK 12 13 GND/HEATSINK NC = No internal connection TPS70451 PWP 5V VIN1 0.22 mF 22 mF VSENSE1 250 kW PG1 PG1 VIN2 0.22 mF >2 V EN1 2 V MR MR 250 kW >2 V