Micrel, Inc.

MIC2785

March 2009

2

M9999-031709-A

Ordering Information

(1)

Part Number

Typical Application

Voltage

Nominal Threshold

Voltage

Package

MIC2785-16YFT

1.8V +10%

1.62V

6-Pin (1.2mm x 1.2mm) Thin MLF

®

Note:

1. Other voltage thresholds available. Contact Micrel for details.

Pin Configuration

6-Pin (1.2mm x 1.2mm) Thin MLF

Pin Description

Pin Number

Pin Name

Pin Function

1

NC

Not Internally Connected.

2

VDD

Analog (Input): Independent supply input for internal circuitry.

3

GND

Ground.

4

VIN

Analog (Input). Monitored input voltage. An under-voltage condition will trigger a reset

sequence.

5

/MR

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

Assuming VIN is above the threshold when /MR is released (returns high), the reset

output will be de-asserted. /MR may be driven by a logic signal or a mechanical switch.

/MR has an internal pull-up to VDD and may be left floating if unused.

6

/RST

Digital (Output): Asserted low whenever the VIN pin voltage falls below the reference

voltage or Manual Reset pin (/MR) is asserted. It will remain asserted until VIN voltage

rises above the threshold voltage and the /MR pin is released. The maximum output

voltage of the /RST pin is VIN. /RST is a push-pull output.