TPS3306-15

www.ti.com TPS3306-15 TPS3306-18, TPS3306-20 TPS3306-25, TPS3306-33 SLVS290C – APRIL 2000 – REVISED DECEMBER 2006 DUAL PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL FEATURES Dual Supervisory Circuits With Power-Fail for DSP and Processor-Based Systems Voltage Monitor for Power-Fail or Low-Battery Warning Watchdog Timer With 0.8 Second Time-Out Power-On Reset Generator With Integrated 100 ms Delay Time Open-Drain Reset and Power-Fail Output Supply Current of 15 µA (Typ.) Supply Voltage Range: 7 V to 6 V Defined RESET Output From VDD≥ 1.1 V MSOP-8 and SO-8 Packages Temperature Range: –40°C to +85°C APPLICATIONS Multivoltage DSPs and Processors Portable Battery-Powered Equipment Embedded Control Systems Intelligent Instruments Automotive Systems D OR DGK PACKAGE (TOP VIEW) SENSE1 1 SENSE2 2 PFI 3 GND 4 TPS3306 8 VDD 7 WDI 6 PFO 5 RESET DESCRIPTION The TPS3306 family is a series of supervisory circuits designed for circuit initialization which require two supply voltages, primarily in DSP and processor-based systems. The product spectrum of the TPS3306-xx is designed for monitoring two independent supply voltages of 3.3 V/1.5 V, 3.3 V/1.8 V, 3.3 V/2 V, 3.3 V/2.5 V, or 3.3 V/5 V. TYPICAL OPERATING CIRCUIT 3.3 V 1.5 V AVDD TPS3306–15 R3 R4 CVDD SENSE1 VDD DVDD R1 SENSE2 WDI 1% PFI PFO B_XF TMS320 A_XF VC5441 R2 GND RESET 1% RESET VSS VSSA Please be aware that an important notice concerning availability, standard warranty, and...