MIC2774 Micrel Semiconductor, MIC2774 Datasheet
MIC2774
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MIC2774 Summary of contents
Page 1
... MIC2774 General Description The MIC2774 is a dual power supply supervisor that provides under-voltage monitoring, manual reset capability, and power- on reset generation in a compact 5-pin SOT package. Fea- tures include two under-voltage detectors, one fixed and one adjustable, and a choice of reset outputs. One under-voltage detector compares V against a fixed threshold ...
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... Version Pin Description Pin Number Pin Number Pin Name MIC2774H MIC2774L MIC2774N MIC2774 Typical Application ( 5.0V ±5% 5.0V ±10% 3.3V ±5% 3.3V ±10% 3.0V ±5% 2.85V ±5% 2.70V ±5% 2.5V ±5% 2.4V ±5% 1.8V ±5% Pin Function RST Digital (Output): Asserted high whenever V old voltage ...
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... L versions) ......... –0. ............. –40°C to +85° ...................... 256°C/W JA Min Typ Max 3.5 V –1. +1. 295 300 305 140 280 0.3 0.3 0.8V DD 0.8V DD 0. 100 100 = 1.2V. DD Micrel +0.3V DD Units µ µ µ MIC2774 ...
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... LOW RST V (ACTIVE HIGH) OL MIC2774 A A > t MIN t t RST RST Propagation delays not shown for clarity. Note A. The MIC2774 ignores very brief transients. See “Applications Information” for details. 4 Micrel V HYST HYST V REF t RST September 29, 2000 ...
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... Delay Line V REF GND MIC2774 to the reset input of a µC or µP, the processor will be properly reset at power-on and during power-down and brown-out conditions. In addition, asserting /MR, the manual reset input, will activate the reset function. IN The reset output is asserted any time /MR is asserted drops below the corresponding threshold voltage ...
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... TH = − TOTAL Application Example Figure 1 below illustrates a hypothetical MIC2774L-23 appli- cation in which the MIC2774L-23 is used to monitor the core and I/O supplies of a high-performance CPU or DSP. The , in the example is 1.0V ±5%. The main core supply, V CORE , is 2.5V ±5%. As shown in power rail and I/O voltage, V I/O Figure 1, the MIC2774 is powered by V value 2.5V – ...
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... In this situation, circuits driven by /RST could be allowed to float, causing undesired operation. (In most cases, however expected that the circuits driven by the MIC2774L will be similarly inoperative given application requires that /RST be valid below ...
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... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC2774 1.75 (0.069) 3.00 (0.118) 1 ...