MIC2782
Dual-Input Push Button Reset IC
with Immediate and Delayed Outputs
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 2.2µA 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.
Features
•
•
•
•
•
•
•
•
•
•
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
V
DD
= 1.5V to 5.5V
0.1uF
VDD
100k
100k
/MR1
RESET
/RESET
LOAD SWITCH
or PMIC
or µP
MIC2782
LOAD SWITCH
or PMIC
/RESET
or µP
PUSH-BUTTON
SWITCH
/MR1
PUSH-BUTTON
SWITCH
/MR2
/MR2
ANDOUT
GND
.
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
Micrel, Inc.
MIC2782
Ordering Information
Setup Period
Part Number
MIC2782CLYCS
MIC2782CMYCS
MIC2782CRYCS
MIC2782DLYCS
MIC2782DMYCS
MIC2782DRYCS
MIC2782ELYCS
MIC2782EMYCS
MIC2782ERYCS
MIC2782FLYCS
MIC2782FMYCS
MIC2782FRYCS
Notes:
1.
Contact Factory for availability.
(1)
(1)
(1)
(1)
Reset Timeout Period
(t
RESET
)
(s)
0.5
1
2
0.5
1
2
0.5
1
2
0.5
1
2
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm × 1.2mm WLCSP
Package
Part Marking
UJA
-
UJC
UKU
-
UJE
UKW
UKX
-
UJF
-
UKZ
(t
SETUP
)
(s)
6
6
6
8
8
8
10
10
10
12
12
12
Ordering Guide
February 21, 2014
2
Revision 2.0
Micrel, Inc.
MIC2782
Chip Scale Package (CS) Bump Configuration
Y = Year Code
WW = Week Code
TOP VIEW
TOP VIEW (BUMP SIDE DOWN)
6-Bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
BOTTOM VIEW (BUMP SIDE UP)
Pin Description
Bump
Designation
Bump
Name
Pin Function
NMOS Open-Drain output, Active-Low. Asserts low 1.5ms after /MR1 and /MR2 are both asserted
low. Connect a resistor greater than 5kΩ from the ANDOUT pin to VDD in order to pull up the
ANDOUT output voltage when inactive. No ESD diode from ANDOUT to VDD. Please see the
Functional Description and Timing Diagram sections for further details of how the ANDOUT
output functions.
Manual Reset Input 2, Active-Low. Internal 65kΩ (typical) Pull-Up Resistor to VDD. Pulling both
manual reset inputs low for longer than the setup period causes one RESET output pulse for the
reset timeout delay period.
NMOS Open-Drain output, Active-Low. Asserts low after /MR1 and /MR2 have both asserted low
for longer than setup period. Connect a resistor greater than 5kΩ from the RESET pin to VDD in
order to pull up the RESET output voltage when inactive. No ESD diode from RESET to VDD.
Please see the Functional Description and Timing Diagram sections for further details of how the
RESET output functions.
Manual Reset Input 1, Active-Low. Internal 65kΩ (typical) Pull-Up Resistor to VDD. Pulling both
manual reset inputs low for longer than the setup period causes one RESET output pulse for the
reset timeout delay period.
Supply Voltage. Bypass to ground with minimum 0.1µF capacitor.
Supply Ground.
A1
ANDOUT
A2
/MR2
B1
RESET
B2
C1
C2
/MR1
VDD
GND
February 21, 2014
3
Revision 2.0
Micrel, Inc.
MIC2782
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
) ......................................GND to +6.0V
Input Voltage (V
/MR1
, V
/MR2
)………GND - 0.3V to V
DD
+ 0.3V
NMOS Output Voltage (V
RESET,
V
ANDOUT
)…....GND - 0.3V to
+6.0V
Lead Temperature (soldering, 10sec.) ....................... 260°C
Storage Temperature (Ts).......................... -55°C to +150°C
(3)
ESD Rating (Human Body Model) .............................. 2kV
ESD Rating (Machine Model)…………………………...200V
Operating Ratings
(2)
Supply Voltage (V
DD
) .................................... +1.5V to +5.5V
Input Voltage (V
/MR1
, V
/MR2
)…………………...….…0V to V
DD
NMOS Output Voltage (V
RESET,
V
ANDOUT
)….……0V to +5.5V
Junction Temperature (T
J
) .......................... –40°C to +85°C
Package Thermal Resistance
6-Bump, 0.4mm Pitch WLCSP (θ
JA
) ................ 125°C/W
Electrical Characteristics
(4)
For typical values, V
DD
= 3.3V, /MR1 = /MR2 = Open, T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+85°C; unless noted.
Parameter
Power Supply Input
Supply Voltage (V
DD
)
Reset Output Valid
V
DD
= 3.3V, /MR1 = /MR2 = VDD
Supply Current (I
DD
)
V
DD
= 5.0V, /MR1 = /MR2 = VDD
V
DD
= 3.3V, /MR1 = /MR2 = GND
Reset Time
Ordering Option: C
Setup Period (t
SETUP
)
Ordering Option: D
Ordering Option: E
Ordering Option: F
Ordering Option: L
Reset Timeout Period (t
RESET
)
Ordering Option: M
Ordering Option: R
ANDOUT Debounce Time (t
DB
)
V
/MR1,2
< (V
IL
– 100mV)
V
DD
= 4.5V, I
SINK
= 1.6mA
Output Low Voltage (V
OL
)
V
DD
= 3.3V, I
SINK
= 1.2mA
V
DD
= 1.5V, I
SINK
= 0.5mA
Open-Drain Leakage Current (I
LEAKAGE
)
/MR1, /MR2 Input
Input High Voltage (V
IH
)
Input Low Voltage (V
IL
)
Internal Pull-Up Resistance (R
PU
)
Notes:
1.
2.
3.
4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Conditions
Min.
Typ.
Max.
Units
1.5
2.2
3.2
120
5.5
4.0
5.0
V
µA
5.4
7.2
9.0
10.8
0.4
0.9
1.8
1
6
8
10
12
0.5
1
2
1.5
6.6
8.8
11
13.2
0.6
1.1
2.2
2
0.3
0.3
0.3
300
nA
V
s
s
ms
RESET, ANDOUT Inactive
V
RESET
, V
ANDOUT
= 5.5V
1.2
0.4
For /MR1, /MR2
55
65
75
V
V
kΩ
February 21, 2014
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Revision 2.0
Micrel, Inc.
MIC2782
Typical Characteristics
V
DD
Supply Current
vs. Temperature
3.4
4.4
V
DD
Supply Current
vs. Supply Voltage
SUPPLY CURRENT (µA)
T
A
= 25°C
/MR1 = NOT ASSERTED
/MR2 = NOT ASSERTED
122
SUPPLY CURRENT (µA)
3.0
3.6
SUPPLY CURRENT (µA)
V
DD
= 3.3V
/MR1 = NOT ASSERTED
/MR2 = NOT ASSERTED
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Temperature
V
DD
= 3.3V
/MR1 = /MR2 = GND
121
2.6
2.8
120
2.2
2.0
1.8
119
1.4
-40
-15
10
35
60
85
1.2
0
1
2
3
4
5
6
118
-40
-15
10
35
60
85
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Supply Voltage
280
Setup Period
vs. Temperature
10.6
V
DD
= 3.3V
MIC2782ELYCS
11.0
Setup Period
vs. Supply Voltage
T
A
= 25°C
MIC2782ELYCS
SUPPLY CURRENT (µA)
SETUP PERIOD (s)
SETUP PERIOD (s)
-40
-15
10
35
60
85
TA = 25°C
/MR1 = /MR2 = GND
220
10.4
10.5
10.2
10.0
160
100
10.0
9.5
40
0
1
2
3
4
5
6
9.8
9.0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Reset Timeout Period
vs. Temperature
0.60
0.60
Reset Timeout Period
vs. Supply Voltage
RESET TIMEOUT PERIOD (s)
T
A
= 25°C
MIC2782ELYCS
0.55
RESET TIMEOUT PERIOD (s)
V
DD
= 3.3V
MIC2782ELYCS
0.55
0.50
0.50
0.45
0.45
0.40
-40
-15
10
35
60
85
0.40
0
1
2
3
4
5
6
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
February 21, 2014
5
Revision 2.0
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