MIC2782

Dual-Input Push Button Reset IC

with Immediate and Delayed Outputs

.

January 2012

M9999-010912-A

General Description

The MIC2782 is a two input, two output push button reset

IC. It will generate a reset pulse for a factory programmed

reset timeout period after both manual reset inputs have

been held to a logic-low for the factory programmed setup

period. The MIC2782 also has an ANDOUT logic output

which will activate if both inputs are held low for longer

than a debounce time (1.5ms), and deactivate if one or

both inputs are released for longer than a debounce time

(1.5ms). The RESET and ANDOUT outputs are active-low,

open-drain NMOS outputs.

The MIC2782 operates over the 1.5V to 5.5V supply

voltage range, consuming 2.2

A of supply current at 3.3V.

The device features 65k

internal pull-up resistors on both

of the inputs (/MR1 and /MR2). The device offers factory

programmed setup periods of 6s, 8s, 10s, or 12s and reset

timeout periods of 0.5s, 1s or 2s. It is available in a space

saving, 6-bump, 0.4mm pitch, 0.8mm x 1.2mm Wafer

Level Chip Scale Package.

Data sheets and support documentation can be found on

Features

 1.5V to 5.5V Operating Supply Voltage Range

 2.2A Supply Current with /MR1, /MR2 not asserted

 Factory programmed setup periods of 6s, 8s, 10s or 12s

 Factory programmed reset timeout periods of 0.5s, 1s or

2s

 Integrated 65k /MR1 and /MR2 Pull-Up Resistors

 Supports single push button reset with /MR1 tied to

/MR2

 RESET asserts after /MR1 and /MR2 are asserted low

for a setup period

 ANDOUT asserts after /MR1 and /MR2 are asserted low

for a debounce time (1.5ms)

 Open-Drain RESET and ANDOUT Outputs

 6-bump, 0.4mm pitch, 0.8mm x 1.2mm Wafer Level

Chip Scale Package (WLCSP)

Applications

 Smart Phones

 Tablets

 eBooks

 Portable Games

 Portable Navigation Device

____________________________________________________________________________________________________________________

Typical Application