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MIC2790 Datasheet, PDF (1/18 Pages) Micrel Semiconductor – Supervisor with High-Accuracy, Ultra-Fast Propagation Delay, and Capacitor-Programmable Reset Delay | |||
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MIC2790/1/3
Supervisor with High-Accuracy,
Ultra-Fast Propagation Delay, and
Capacitor-Programmable Reset Delay
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 â40°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 â40ËC to +125ËC. The MIC2790 is available in a
6-pin TSOT-23 package or a 6-pin 2mm à 2mm à 0.55mm
DFN package. The MIC2791 is available in a tiny 6-pin
1.6mm à 1.6mm à 0.55mm DFN package. The MIC2793 is
available in a 8-pin 2mm à 2mm à 0.55mm DFN package.
Datasheets and support documentation are available on
Micrelâs 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)
â ±1.0% threshold accuracy from â40°C to +125°C
â 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:
â Open-drain active-low (/RESET)
â Push-pull active-low (/RESET)
â Push-pull active-high (RESET)
⢠â40°C to 125°C junction temperature range
⢠6-pin TSOT-23 (MIC2790)
⢠6-pin 2mm à 2mm Thin DFN (MIC2790)
⢠6-pin 1.6mm à 1.6mm Thin DFN (MIC2791)
⢠8-pin 2mm à 2mm Thin DFN (MIC2793)
Applications
⢠Telecom
⢠Computer/servers
⢠Medical equipment
⢠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 ⢠http://www.micrel.com
August 23, 2013
Revision 1.0
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