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MIC2772-M3M3YML Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2772-M3M3YML Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 9 page MIC2772 Dual Voltage Supervisor General Description The MIC2772 is a dual power supply supervisor that provides under-voltage monitoring and power-on reset generation. It may replace two discrete voltage supervisors such as MIC1810, MIC1815, MIC809, MIC811, MIC6315, etc. The two voltage supervisors are completely independent. Each functional block features an under-voltage detector, a delay-generator, and a de-bounced manual reset input. A wide choice of voltage thresholds is available. The reset output is asserted at power-on and any time the input voltage drops below the reference voltage. It remains asserted for the chosen timeout period after the input rises back above the threshold. Reset timeouts of 20, 140, and 1100ms (minimum) are available. A reset can be generated at any time by asserting the manual reset input, /MR. This input is internally de-bounced, and the reset output will remain active for the timeout period after the release of /MR. The /MR input can also be used to daisy-chain one or more of the MIC2772’s supervisors onto existing power monitoring circuitry or other supervisors. The tiny 2x2mm MLF package has a footprint smaller than that of a single SOT23 voltage supervisor. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features • Two independent voltage supervisors • Directly replaces discrete supervisors • Generates power-on reset pulses • De-bounced manual reset Inputs • Choice of voltage thresholds • 20, 140, or 1100ms reset timeouts • Reset output may be pulled above VCC • Rejects brief input transients • Ultra-small 2x2mm MLF package Applications • Servers • Embedded Controllers • Telecommunications Systems • Power Supply Sequencing • Hot-swapping • Power supplies ____________________________________________________________________________________________________ Typical Application MR1 MR2 GND2 RESET2 VCC2 VCC2 10k 10k RESET1 VCC1 VCC1 GND1 RESET VCC GND GND RESET VCC µP µP MIC2772 Typical Application Circuit April 2005 M9999-042005 (408) 955-1690 |
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Similar Description - MIC2772-M3M3YML |
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