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PDF MIC2782 Data sheet ( Hoja de datos )
| Número de pieza | MIC2782 | |
| Descripción | Dual-Input Push Button Reset IC | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC2782
Dual-Input Push Button Reset IC
with Immediate and Delayed Outputs
General Description
Features
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 2.2µA of supply current at 3.3V.
The device features 65kΩ 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 × 1.2mm wafer level
chip scale package.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
• 1.5V to 5.5V operating supply voltage range
• 2.2µA 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 65kΩ /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 × 1.2mm wafer level chip
scale package (WLCSP)
Applications
• Smart phones
• Tablets
• eBooks
• Portable games
• Portable navigation device
____________________________________________________________________________________________________________________
Typical Application
VDD = 1.5V to 5.5V
0.1uF
VDD
100k 100k
/MR1
RESET
MIC2782
PUSH-BUTTON
SWITCH
PUSH-BUTTON
SWITCH
/MR2
ANDOUT
/MR1
/MR2
GND
LOAD SWITCH
or PMIC
/RESET
or µP
LOAD SWITCH
or PMIC
/RESET or µP
.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 21, 2014
Revision 2.0
1 page  
Micrel, Inc.
Typical Characteristics
VDD Supply Current
vs. Temperature
3.4
VDD = 3.3V
/MR1 = NOT ASSERTED
3.0 /MR2 = NOT ASSERTED
2.6
2.2
1.8
1.4
-40
-15 10 35 60
TEMPERATURE (°C)
85
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Supply Voltage
280
TA = 25°C
/MR1 = /MR2 = GND
220
160
100
40
0 1 2 34 5 6
SUPPLY VOLTAGE (V)
Reset Timeout Period
vs. Temperature
0.60
VDD = 3.3V
MIC2782ELYCS
0.55
0.50
0.45
0.40
-40
-15 10 35 60
TEMPERATURE (°C)
85
MIC2782
VDD Supply Current
vs. Supply Voltage
4.4
TA = 25°C
/MR1 = NOT ASSERTED
/MR2 = NOT ASSERTED
3.6
2.8
2.0
1.2
0
12 345
SUPPLY VOLTAGE (V)
6
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Temperature
122
VDD = 3.3V
/MR1 = /MR2 = GND
121
120
119
118
-40
-15 10 35 60
TEMPERATURE (°C)
85
Setup Period
vs. Temperature
10.6
VDD = 3.3V
MIC2782ELYCS
10.4
10.2
10.0
9.8
-40
-15 10 35 60
TEMPERATURE (°C)
85
Setup Period
vs. Supply Voltage
11.0
TA = 25°C
MIC2782ELYCS
10.5
10.0
9.5
9.0
0
1 234 5
SUPPLY VOLTAGE (V)
6
Reset Timeout Period
vs. Supply Voltage
0.60
TA = 25°C
MIC2782ELYCS
0.55
0.50
0.45
0.40
0
1 234 5
SUPPLY VOLTAGE (V)
6
February 21, 2014
5
Revision 2.0
5 Page 
Micrel, Inc.
Evaluation Board Schematic
MIC2782
VDD
1.5V to 5.5V
CBYP
0.1µF
U1
J1
VDD
C1
VDD
R1
100k
RESET B1
MIC2782
B2 /MR1
R2
100k
J2
RESET
SW1
PUSH-BUTTON
SWITCH
J7 J6
/MR1
A2 /MR2
SW2
J5 J4
/MR2
PUSH-BUTTON
SWITCH
ANDOUT
GND
C2
A1
J3
ANDOUT
Bill of Materials
Item
C1
R1, R2
U1
Part Number
GRM188R71C104KA01D(1)
CRCW0603100KJNEA(2)
MIC2782ELYCS(3)
Notes:
1. Murata Tel: www.murata.com.
2. Vishay Tel: www.vishay.com.
3. Micrel, Inc.: www.micrel.com.
Manufacturer
Murata
Vishay
Micrel, Inc.
Description
0.1µF, 16V capacitor, X7R, 0603
100k, 5% resistor, 0603
Dual-Input Push Button Reset IC
Qty.
1
2
1
February 21, 2014
11
Revision 2.0
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MIC2782.PDF ] | |
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