MIC2790/1/3 Supervisor with High-Accuracy, Ultra-Fast Propagation Delay, and Capacitor-Programmable Reset Delay General Description Features The MIC2790/1/3 is ideal for monitoring highly-accurate 1.5V to 5.5V operating supply voltage range core voltages that require rapid response in the event of a Ultra-fast propagation delay (1s typically) fault condition. The voltage supervisor IC features a 0.4V reference voltage (SNS pin) manual reset input, enable input (MIC2793 only), a 1.0% threshold accuracy from 40C to +125C capacitor-programmable reset timeout delay and both an active-low and active-high reset output. Monitored voltage range from 0.4V to 5.5V Programmable reset timeout delay (from 1ms to 10s) The MIC2790/1/3 monitors system voltages that are in the Manual reset input with an internal pull-up resistor range of 0.4V to 5.5V, with a typical sense accuracy of 0.5% at +25C and 1.0% across 40C to +125C. The Active-high enable input pin (MIC2793 only) IC asserts a reset output when the sense voltage drops The MIC2790/1/3 features multiple output options: below the threshold or when the manual reset is pulled to Open-drain active-low (/RESET) a logic low. The active-low reset stays low for the duration Push-pull active-low (/RESET) of the reset timeout delay once the sense voltage returns to normal and the manual reset transitions to a logic high Push-pull active-high (RESET) state. The reset timeout delay period is programmable 40C to 125C junction temperature range from 1ms to 10s with an external capacitor. 6-pin TSOT-23 (MIC2790) The MIC2790/1/3 operates from a low supply voltage of 6-pin 2mm 2mm Thin DFN (MIC2790) 1.5V to 5.5V, and is rated to operate over the temperature 6-pin 1.6mm 1.6mm Thin DFN (MIC2791) range of 40C to +125C. The MIC2790 is available in a 8-pin 2mm 2mm Thin DFN (MIC2793) 6-pin TSOT-23 package or a 6-pin 2mm 2mm 0.55mm DFN package. The MIC2791 is available in a tiny 6-pin Applications 1.6mm 1.6mm 0.55mm DFN package. The MIC2793 is Telecom available in a 8-pin 2mm 2mm 0.55mm DFN package. Computer/servers Datasheets and support documentation are available on Medical equipment Micrels web site at:www.m icrel.com. Portable Set-top boxes Critical microprocessor monitoring Typical Application Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC2790/1/3 Ordering Information /RESET RESET Threshold Enable Junction Marking Output Output (2, 3) Part Number Package Voltage Pin Temperature Code (1) (Active- (Active- Range (SNS) Feature Low) High) MIC2790N-04VD6 9NB 0.4V Open-Drain 40C to +125C 6-pin TSOT-23 MIC2790L-04VD6 9LB 0.4V Push-Pull 40C to +125C 6-pin TSOT-23 MIC2790H-04VD6 9LC 0.4V Push-Pull 40C to +125C 6-pin TSOT-23 MIC2790N-04VMT 9NA 0.4V Open-Drain 40C to +125C 6-pin 2mm 2mm TDFN MIC2791N-04VMT 1N 0.4V Open-Drain 40C to +125C 6-pin 1.6mm 1.6mm TDFN MIC2791L-04VMT 1L 0.4V Push-Pull 40C to +125C 6-pin 1.6mm 1.6mm TDFN MIC2791H-04VMT XH 0.4V Push-Pull 40C to +125C 6-pin 1.6mm 1.6mm TDFN MIC2793LH-04VMT 3LH 0.4V Push-Pull Push-Pull Yes 40C to +125C 8-pin 2mm 2mm TDFN MIC2793NH-04VMT 3NH 0.4V Open-Drain Push-Pull Yes 40C to +125C 8-pin 2mm 2mm TDFN Notes: 1. Other voltage options are available. Contact Micrel for details. 2. Thin DFN pin 1 identifier = . 3. Thin DFN is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen free. Pin Configuration VDD 1 6 RESET (/RESET) RESET (/RESET) 1 6 VDD 5 5 GND 2 SNS SNS 2 GND /MR 3 4 C C 3 EP 4 /MR TH TH 6-Pin TSOT (D6) 6-Pin 1.6mm x 1.6mm TDFN (MT) (Top View) (Top View) 1 8 RESET EN VDD 1 6 RESET (/RESET) 2 7 /RESET VDD 5 SNS 2 GND SNS 3 6 GND C 3 EP 4 /MR EP TH C 4 5 /MR TH 6-Pin 2mm x 2mm TDFN (MT) 8-Pin 2mm x 2mm TDFN (MT) (Top View) (Top View) Revision 1.2 May 22, 2014 2