TI TPS386040RGPR

The TPS3860×0 series power supply monitors (SVS) can monitor 4 power rails above 0.4V and 1 power rail below 0.4V (including negative voltages) with a threshold accuracy of 0.25% (typical). Each of the 4 monitoring circuits (SVS-n) asserts a RESETn or RESETn output signal when the SENSEm input voltage falls below the programmed threshold. The threshold of each SVS-n can be programmed using external resistors (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).

Each SVS-n features a programmable delay before releasing RESETn or RESETn. The delay time for each SVS can be set independently via the CTn pin connections, with a configurable range of 1.4ms to 10s. Only SVS-1 has an active-low manual reset (MR) input; when MR receives a logic-low input, RESET1 or RESET1 is asserted.

SVS-4 uses two comparators to monitor a threshold window. The additional comparator can be configured as a fifth SVS to monitor negative voltages via the voltage reference output VREF.

The TPS3860×0 features an ultra-low quiescent current of 11μA (typical) and is available in a compact 4mm x 4mm VQFN-20 package.

• 4 independent voltage monitor channels
• Channel 1: Adjustable threshold down to 0.4V
• Manual reset (MR) input
• Channels 2, 3: Adjustable threshold down to 0.4V
• Channel 4: Adjustable threshold for any positive or negative voltage
• Window comparator
• Adjustable reset delay time: 1.4ms to 10s
• Threshold accuracy: 0.25% (typical)
• Ultra-low quiescent current: 11μA (typical)
• Watchdog timer with dedicated output
• Well-controlled outputs during power-up
• TPS386000: Open-drain RESETn and WDO
• TPS386040: Push-pull RESETn and WDO
• Package: 4mm×4mm 20-pin VQFN

• All DSP and microcontroller applications
• All FPGA and ASIC applications
• Telecom and wireless infrastructure
• Industrial equipment
• Analog sequencing