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MIC2791L-04VMT Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2791L-04VMT Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 18 page MIC2790/1/3 Supervisor with High-Accuracy, Ultra-Fast Propagation Delay, and Capacitor-Programmable Reset Delay Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com August 23, 2013 Revision 1.0 General Description The MIC2790/1/3 is ideal for monitoring highly-accurate core voltages that require rapid response in the event of a fault condition. The voltage supervisor IC features a manual reset input, enable input (MIC2793 only), a capacitor-programmable reset timeout delay and both an active-low and active-high reset output. The MIC2790/1/3 monitors system voltages that are in the range of 0.4V to 5.5V, with a typical sense accuracy of 0.5% at +25°C and ±1.0% across −40°C to +125°C. The IC asserts a reset output when the sense voltage drops below the threshold or when the manual reset is pulled to a logic low. The active-low reset stays low for the duration of the reset timeout delay once the sense voltage returns to normal and the manual reset transitions to a logic high state. The reset timeout delay period is programmable from 1ms to 10s with an external capacitor. The MIC2790/1/3 operates from a low supply voltage of 1.5V to 5.5V, and is rated to operate over the temperature range of − 40˚C to +125˚C. The MIC2790 is available in a 6-pin TSOT-23 package or a 6-pin 2mm × 2mm × 0.55mm DFN package. The MIC2791 is available in a tiny 6-pin 1.6mm × 1.6mm × 0.55mm DFN package. The MIC2793 is available in a 8-pin 2mm × 2mm × 0.55mm DFN package. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Features • 1.5V to 5.5V operating supply voltage range • Ultra-fast propagation delay (1µs typically) • 0.4V reference voltage (SNS pin) − ±1.0% threshold accuracy from −40°C to +125°C − Monitored voltage range from 0.4V to 5.5V • Programmable reset timeout delay (from 1ms to 10s) • Manual reset input with an internal pull-up resistor • Active-high enable input pin (MIC2793 only) • The MIC2790/1/3 features multiple output options: − Open-drain active-low (/RESET) − Push-pull active-low (/RESET) − Push-pull active-high (RESET) • −40°C to 125°C junction temperature range • 6-pin TSOT-23 (MIC2790) • 6-pin 2mm × 2mm Thin DFN (MIC2790) • 6-pin 1.6mm × 1.6mm Thin DFN (MIC2791) • 8-pin 2mm × 2mm Thin DFN (MIC2793) Applications • Telecom • Computer/servers • Medical equipment • Portable • Set-top boxes • Critical microprocessor monitoring Typical Application |
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