MIC2774L-23YM5 datasheet(3/11 Pages) MICREL

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Micrel, Inc.

MIC2774

March 16, 2015

Revision 2.0

Pin Configuration

SOT-23-5 (M5)

“H” Version

SOT-23-5 (M5)

“L” and “N” Version

Pin Description

Pin Number

MIC2774H

Pin Number

MIC2774L

MIC2774N

Pin Name

Pin Function

RST

Digital (Output): Asserted high whenever VIN or VDD falls below the threshold

voltage. It will remain asserted for no less than 140ms after VIN and VDD return

above the threshold limits.

/RST

Digital (Output): Asserted low whenever VIN or VDD falls below the threshold

voltage. It will remain asserted for no less than 140ms after VIN and VDD return

above the threshold limits. (Open-drain for “N” version, requires an external

pull-up resistor).

GND

Ground

/MR

Digital (Input): Driving this pin low initiates immediate and unconditional reset.

Assuming VIN and VDD are above the thresholds when /MR is released

(returns high), the reset output will be de-asserted no less than 140ms later.

/MR may be driven by a logic signal or a mechanical switch. /MR has an

internal pull-up to VDD and may be left open if unused.

Analog (Input): The voltage on this pin is compared to the internal 300mV

reference. An undervoltage condition will trigger a reset sequence.

VDD

Analog (Input): Power supply input for internal circuitry and input to the fixed

voltage monitor. The voltage on this pin is compared against the internal

reference. An undervoltage condition will trigger a reset sequence.

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