MIC2786-YAYMTTR datasheet, PDF

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MIC2786-YAYMTTR: DescriptionRegulator; CategoryPower/power management The power supply circuit; File Size579KB，17 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MIC2786-YAYMTTR Overview

Regulator

MIC2786-YAYMTTR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Objectid	113551665
package instruction	,
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-609 code	e4
Terminal surface	Nickel/Palladium/Gold (Ni/Pd/Au)

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MIC2786/MIC2787

Push-Button Reset IC with Voltage

Supervisor

General Description

The MIC2786/MIC2787 are low-current, ultra-small, push-

button supervisor reset ICs with an integrated supply

voltage monitor. The device features two manual reset

inputs and two reset outputs. The reset outputs are

asserted and held when the supply voltage decreases

below the factory programmed threshold voltage. Reset

will be asserted for the reset timeout delay once the supply

voltage increases above the rising threshold voltage or

when both manual reset inputs are asserted low for longer

than the setup delay time.

The MIC2786 features integrated pull-up resistors on the

/MR0 and /MR1 inputs, while the MIC2787 requires

external pull-up resistors. The PDY input pin selects

between a 2s, 4s or 6s setup period. Factory-programmed

reset timeout delays of 140ms (min.) and 240ms (min.) are

available. An active-low, open-drain reset output (/RST)

and an active-high, push-pull reset output (RSTP) provide

flexibility when interfacing to various microcontrollers,

PMICs, or load switches.

The MIC2786/MIC2787 consume a quiescent current of

only 7.4µA and are offered in a tiny, space saving 8-pin

Thin MLF (2mm x 2mm x 0.55mm) package.

Data sheets and support documentation can be found on

Micrel’s web site at:

www.micrel.com.

Features

•

1.6V to 5.5V operating voltage

7.4µA supply current when /MR0, /MR1 not asserted

1.66V to 4.63V preset voltage threshold options

2.5% voltage threshold accuracy over temperature

Asserting /MR0 and /MR1 for the setup delay time

asserts reset output for the reset timeout delay

Programmable delay (PDY) input selects 2s, 4s or 6s

setup delay

Factory-programmed 140ms (min.) or 240ms (min.)

reset timeout delay

Integrated /MR0, /MR1 pull-up resistors (MIC2786)

Dual reset outputs:

−

Open-drain, active-low reset output (/RST)

−

Push-pull, active-high reset output (RSTP)

−40°C

to +85°C ambient operating temperature range

8-pin 2mm x 2mm x 0.55mm Thin MLF

package

•

Applications

•

Smart phones

•

Tablets

•

Set-top boxes (STB)

_________________________________________________________________________________________________________________________

Typical Application

MLF and

MicroLeadFrame

are registered trademarks of Amkor Technologies, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •

http://www.micrel.com

October 2011

M9999-102711-A

Micrel, Inc.

MIC2786/MIC2787

Pin Configuration

MIC2786/MIC2787

8-Pin (2mm

2mm) Thin MLF

Top View

Pin Description

Pin Number

Pin Name

RSTP

GND

/MR1

Pin Function

Active-High Push-Pull Reset Output. This output changes from low-to-high when VIN drops below the

selected reset threshold or both manual reset pins are pulled low for the setup delay period. RSTP

remains high for the reset timeout delay after VIN exceeds the reset threshold plus hysteresis voltage

or the setup delay period has elapsed.

Supply Ground.

Active-Low Manual Reset Input. The MIC2786 has an internal 65kΩ pull-up resistor to VIN, while the

MIC2787 requires an external pull-up resistor to VIN if used with a push button. Pull this pin low to

assert and force a reset. Pulling both manual reset inputs low for the setup delay time causes one

reset output pulse for the reset timeout delay period. Connect to VIN if unused, do not leave floating.

Active-Low Open-Drain Reset Output. This output changes from high-to-low when VIN drops below

the selected reset threshold or both manual reset pins are pulled low for the setup delay period. /RST

remains low for the reset timeout delay after VIN exceeds the reset threshold or the setup delay has

elapsed and it requires an external pull-up resistor.

Programmable Delay Input with Tri-State Connection. When left open, setup delay is 2s, when

connected to GND, setup delay is 4s and when connected to VIN, setup delay is 6s.

No Connect. Leave pin floating.

Active Low Manual Reset Input. The MIC2786 has an internal 65kΩ pull-up resistor to VIN, while the

MIC2787 requires an external pull-up resistor to VIN if used with a push button. Pull this pin low to

assert and force a reset. Pulling both manual reset inputs low for the setup delay time causes one

reset output pulse for the reset timeout delay period. If unused, connect to VIN; do not leave floating.

Supply Voltage Pin. It is the input to the Supply Voltage monitor. When the supply voltage falls below

the reset threshold voltage, reset outputs (/RST and RSTP) are triggered immediately. When the

supply voltage rises above the reset threshold plus hysteresis voltage, the reset outputs remain

asserted for the duration of the reset timeout delay. A minimum 0.1μF decoupling ceramic capacitor

must be connected between VIN and GND close to the pins.

Exposed Pad. Connect to GND.

/RST

PDY

/MR0

VIN

EPAD

October 2011

M9999-102711-A

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