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TPS70345 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS70345 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page TPS70345, TPS70348, TPS70351, TPS70358, TPS70302 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH POWER UP SEQUENCING FOR SPLIT VOLTAGE DSP SYSTEMS SLVS285A – AUGUST 2000 – REVISED OCTOBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Dual Output Voltages for Split-Supply Applications D Selectable Power Up Sequencing for DSP Applications (See TPS704xx for Independent Enabling of Each Output) D Output Current Range of 1 A on Regulator 1 and 2 A on Regulator 2 D Fast Transient Response D Voltage Options Are 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 D Open Drain Power-On Reset With 120-ms Delay D Open Drain Power Good for Regulator 1 D Ultralow 185 µA (typ) Quiescent Current D 2 µA Input Current During Standby D Low Noise: 78 µVRMS Without Bypass Capacitor D Quick Output Capacitor Discharge Feature D Two Manual Reset Inputs D 2% Accuracy Over Load and Temperature D Undervoltage Lockout (UVLO) Feature D 24-Pin PowerPAD TSSOP Package D Thermal Shutdown Protection description TPS703xx family of devices are designed to provide a complete power management solution for TI DSP, processor power, ASIC, FPGA, and digital applications where dual output voltage regulators are required. Easy programmability of the sequencing function makes this family ideal for any TI DSP applications with power sequencing requirement. Differentiated features, such as accuracy, fast transient response, SVS supervisory circuit (power on reset), manual reset inputs, and enable function, provide a complete system solution. 1.8 V VIN1 VIN2 EN SEQ VOUT1 VSENSE1 PG1 MR2 RESET MR1 VSENSE2 TPS70351 PWP 5 V 3.3 V I/O MR1 Core 0.22 µF RESET 22 µF 47 µF 0.22 µF DSP MR2 PG1 EN 250 k Ω >2 V <0.7 V 250 k Ω >2 V <0.7 V >2 V <0.7 V VOUT2 Copyright 2002, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 GND/HEATSINK VIN1 VIN1 NC MR2 MR1 EN SEQ GND VIN2 VIN2 GND/HEATSINK GND/HEATSINK VOUT1 VOUT1 VSENSE1/FB1 NC PG1 RESET NC VSENSE2/FB2 VOUT2 VOUT2 GND/HEATSINK PWP PACKAGE (TOP VIEW) NC – No internal connection |
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