MIC2775 Micrel Semiconductor, MIC2775 Datasheet
MIC2775
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MIC2775 Summary of contents
Page 1
... A reset can be generated at any time by asserting the manual reset input, /MR. This reset output will remain active at least 140ms after the release of /MR. The /MR input can also be used to daisy-chain the MIC2775 onto existing power monitoring circuitry or other supervisors. Hysteresis is included to prevent chattering due to noise. ...
Page 2
... Contact factory for information on non-standard versions. Available in tape-and-reel only. Pin Configuration Pin Description Pin Number Pin Name 1 RST 2 GND 3 /RST 4 /MR 5 VDD MIC2775 Typical Nominal Threshold 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 ± ...
Page 3
... Voltage Options Table.” (Note 2) ) .................................. +1.5V to +5. .................................... –0.3V to +6.0V /MR ) ............. –40°C to +85° ...................... 256°C/W JA Min Typ Max 3.5 V –1. +1. 140 280 0.3 0.3 0.8V DD 0.8V DD 0. 100 100 = 1.2V. DD Micrel Units µ µ µ MIC2775 ...
Page 4
... OH V /RST V (ACTIVE LOW RST V (ACTIVE HIGH) OL MIC2775 A A > t MIN t t RST RST Propagation delays not shown for clarity. Note A. The MIC2775 ignores very brief transients. See “Applications Information” for details. 4 Micrel V HYST RST September 29, 2000 ...
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... Typically, the MIC2775 is used to monitor the power supply of intelligent circuits such as microcontrollers and micropro- cessors. By connecting the appropriate reset output of a MIC2775 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 ...
Page 6
... DD cannot turn on sufficiently to produce a valid logic-low on /RST. 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 MIC2775 ≤ 1.2V.) will be similarly inoperative given application requires that /RST be valid below V = 1.2V, this can be accomplished by adding a pull-down resistor to the /RST output. A value of 100kΩ ...
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... No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. September 29, 2000 1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102) DIMENSIONS: MM (INCH) 1.30 (0.051) 0.90 (0.035) 10° 0° 0.15 (0.006) 0.60 (0.024) 0.00 (0.000) 0.10 (0.004) SOT-23-5 (M5 (408) 944-0970 http://www.micrel.com FAX WEB © 2000 Micrel Incorporated 7 Micrel 0.20 (0.008) 0.09 (0.004) MIC2775 ...