SGM860 Quad Supply Voltage Supervisors with Adjustable Delay and Watchdog Timer
●The SGM860 is a family of supply voltage supervisors (SVSs). It has four channels and each one can monitor a power rail with a high threshold accuracy of 0.35% (TYP). It also features very low quiescent current of 6μA (TYP).
●Among the supply voltage supervisor (SVS-x, x = 1, 2, 3, 4) circuits, four power rails are higher than 0.4V and one power rail is less than 0.4V (even with negative voltage). Once the SENSEy (y = 1, 2, 3, 4L, 4H) input voltage goes down below the configurable threshold, a nRESETx signal can be asserted by each SVS-x. The threshold of each SVS-x can be configured by the external resistors.
●A delay can be configured for each SVS-x before nRESETx is released. The delay time for each SVS can be set independently between 1.45ms and 10s via the CTx pin connection. Only SVS-1 has a manual reset signal (nMR) that the nRESETx is activated by a logic low of nMR. SVS-4 has two comparators to monitor the threshold window and the extra comparator can be used as a fifth SVS to monitor the negative voltage based on the voltage reference VREF.
●The SGM860 is available in a Green TQFN-4×4-20BL package. It operates over a junction temperature range of -40℃ to +125℃.
■FEATURES:
●Four Separate Voltage Supervisors
●Channel 1:
◆Adjustable Threshold Down to 0.4V
◆Manual Reset (nMR) Input
●Channels 2, 3:
◆Adjustable Threshold Down to 0.4V
●Channel 4:
◆Adjustable Positive or Negative Threshold
◆Window Comparator
●Adjustable Delay Time: 1.45ms to 10s
●Threshold Accuracy: 0.35% (TYP)
●Low Quiescent Current: 6μA (TYP)
●Dedicated Output for Watchdog Timer
●Well-Controlled Output during Power-Up
●Output Options:
◆SGM860A: Open-Drain nRESETx Output
◆SGM860B: Push-Pull nRESETx Output
●Available in a Green TQFN-4×4-20BL Package
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SGM860 、 SGM860B 、 SGM860A 、 SGM860AXTUJ20G/TR 、 SGM860BXTUJ20G/TR |
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Quad Supply Voltage Supervisors 、 supply voltage supervisors 、 SVSs |
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[ DSP ][ Microcontroller ][ FPGA ][ ASIC ][ Telecom ][ Wireless Infrastructure ][ Industrial Equipment ] |
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Datasheet |
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Please see the document for details |
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TQFN-4×4-20BL |
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English Chinese Chinese and English Japanese |
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NOVEMBER 2023 |
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REV. A |
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1.5 MB |
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