TPS3813L30DBVT Power Management ICs - PMIC by Texas Instruments

SUPERVISORY CIRCUIT 20UA 6V SOT-23-6

Semiconductors - ICs>Power Management ICs - PMIC>Supervisors & Monitors
Status: Unknown
Series: -
RoHS: Unknown
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The TPS3813xxx family of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems. During power on, RESET is asserted when supply voltage (VDD) becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage (VIT). An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td = 25 ms typical, starts after VDD has risen above the threshold voltage (VIT). When the supply voltage drops below the threshold voltage (VIT), the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider. For safety critical applications the TPS3813xxx family incorporates a so-called window-watchdog with programmable delay and window ratio. The upper limit of the watchdog time-out can be set by either connecting WDT to GND, VDD, or using an external capacitor. The lower limit and thus the window ratio is set by connecting WDR to GND or VDD. The supervised processor now needs to trigger the TPS3813xxx within this window not to assert a RESET. The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 6-pin SOT-23 package. The TPS3813xxx devices are characterized for operation over a temperature range of –40°C to 85°C.

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Specifications

Threshold Voltage 2.64V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 2V
Supply Voltage Max 6V
Reset Type Active-Low Open-Drain
Digital IC Case SOT-23
No. of Pins 6Pins
Delay Time 25ms
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Supply Current 20µA

Alternative Descriptions

voltage supervisor (reset IC) with programmable window watchdog | Texas Instruments

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