TPS3106K33| Datasheet

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TPS3103xxx TPS3106xxx TPS3110xxx
SLVS363E AUGUST 2001 REVISED SEPTEMBER 2007

UltraLow Supply-Current/Supply-Voltage Supervisory Circuits
1

FEATURES DESCRIPTION
The TPS310x and TPS311x families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET is asserted when the supply voltage (VDD) becomes higher than 0.4 V. Thereafter, the supervisory circuit monitors VDD and keeps the RESET output active as long as VDD remains below the threshold voltage (VIT). An internal timer delays the return of the output to the inactive state to ensure proper system reset. The delay time starts after VDD has risen above VIT. When VDD drops below VIT, the output becomes active again. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider. The TPS3103 and TPS3106 have an active-low, open-drain RESET output. The TPS3110 has an active-low push/pull RESET. The product spectrum is designed for supply voltages of 0.9 V up to 3.3 V. The circuits are available in SOT23-6 packages. The TPS31xx family is characterized for operation over a temperatur
e range of 40 C to +85 C.

Precision Supply Voltage Supervision Range: 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V High Trip-Point Accuracy: 0.75% Supply Current of 1.2 A (typical) RESET Defined With Input Voltages as Low as 0.4 V Power-On Reset Generator With a Delay Time of 130 ms Push/Pull or Open-Drain RESET Outputs SOT23-6 Package Package Temperature Range: 40 C to +85 C
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APPLICATIONS
Applications Using Low-Power DSPs, Microcontrollers, or Microprocessors Portable- and Battery-Powered Equipment Intelligent Instruments Wireless Communication Systems Industrial Equipment Notebook/Desktop Computers

TPS3103 DBV PACKAGE (TOP VIEW)

TPS3106 DBV PACKAGE (TOP VIEW)

3.3 V

RESET GND MR

1 2 3

6 5 4

VDD PFO PFI

RSTVDD GND MR

1 2 3

6 5 4

VDD RSTSENSE

1.6 V VDD TPS3106K33DBV R1 MR SENSE RSTVDD R3 VCORE DSP RESET VIO

SENSE

TPS3110 DBV PACKAGE (TOP VIEW)

RSTSENSE GND GND

RESET GND MR

1 2 3

6 5 4

VDD WDI SENSE

GND

Typical Application Circuit

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Copyright 2001 2007, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.