MIC2795/6/7/8/9
Supervisor with Fast Propagation Delay and
Capacitor-Programmable
Reset Delay
General Description
The MIC2795/6/7/8/9 is a low-current supervisor with
capacitor programmable reset delay time. It provides an
active-low or active-high enable input and active-high or
active-low open-drain, active-high or active-low push-pull
outputs. The output (OUT or /OUT) of the device initiates a
reset signal when the sense voltage drops below the
threshold voltage (0.4V) or the device is disabled. When
the device is enabled, the output will assert after the
capacitor adjustable delay time for both the sense and
enable paths. The A versions all feature a capacitor
adjustable delay time for both the sense and enable paths,
while the P versions all feature a fixed 150ns on the
enable delay and capacitor programmable delay with the
sense voltage. A capacitor placed between the CTH pin
and ground sets a reset delay time from 1.25ms to 10s.
Floating the CTH pin sets a 20ms reset delay time, and
connecting CTH to VDD sets a 320ms delay time.
The MIC2795/6/7/8/9 operates from a supply voltage of
1.65V to 5.5V, and guarantees an active-low reset output
for supply voltages equal to or greater than 1V. The device
is rated to operate over the temperature range of
−40°C
to
+125°C.
Datasheets and support documentation are available on
Micrel’s web site at:
www.micrel.com.
Features
•
•
•
•
•
•
1.65V to 5.5V operating supply voltage range
Ultra-low operating current: 2µA (typical)
Fast propagation delay: 10µs (typical)
0.4V threshold voltage with ±2.0% accuracy from –40°C
to +125°C
Programmable reset timeout delay (from 1.25ms to 10s)
Active-low/high multiple output options:
−
Open-drain active-low (MIC2798)
−
Open-drain active-high (MIC2797)
−
Push-pull active-low (MIC2796, MIC2799-2)
−
Push-pull active-high (MIC2795, MIC2799-1)
−40°C
to 125°C junction temperature range
6-pin TSOT
6-pin 1.6mm × 1.6mm Thin DFN
•
•
•
Applications
•
Microprocessor systems
•
Computers, Tablets
•
Intelligent instruments
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
March 12, 2015
Revision 1.0
Micrel, Inc.
MIC2795/6/7/8/9
Ordering Information
(2)(3)
Part Number
MIC2795A-04VMT
MIC2795P-04VMT
MIC2796A-04VMT
MIC2796P-04VMT
MIC2797A-04VMT
MIC2797P-04VMT
MIC2798A-04VMT
(1)
MIC2798P-04VMT
MIC2795A-04VD6
MIC2795P-04VD6
MIC2796A-04VD6
MIC2796P-04VD6
MIC2797A-04VD6
(1)
MIC2797P-04VD6
MIC2798A-04VD6
(1)
MIC2798P-04VD6
(1)
Note:
1. Contact Micrel Marketing for availability.
2. All devices are available in Tape & Reel only. (Order entry PN, add TR. Example: MIC2795A-04VMT TR).
3. Standard/Full reel quantity:
a.
b.
6-pin TSOT: 3,000 pieces per reel, Reel diameter is 7 inches, Hub diameter is 2 inches, and width is 8mm.
6-pin TDFN: 5,000 pieces per reel, Reel diameter is 13 inches, Hub diameter is 7 inches, and width is 8mm.
Marking
Code
8Z
9Z
XQ
YQ
GQ
HQ
IQ
JQ
8Z4
9Z4
XQ4
YQ4
PQ
SQ
TQ
UQ
Enable
(Active-)
High
High
Low
Low
High
High
Low
Low
High
High
Low
Low
High
High
Low
Low
Output
Active-High Push-Pull
Active-High Push-Pull
Active-Low Push-Pull
Active-Low Push-Pull
Active-High Open-Drain
Active-High Open-Drain
Active-Low Open-Drain
Active-Low Open-Drain
Active-High Push-Pull
Active-High Push-Pull
Active-Low Push-Pull
Active-Low Push-Pull
Active-High Open-Drain
Active-High Open-Drain
Active-Low Open-Drain
Active-Low Open-Drain
Enable
Delay
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Junction
Temperature
Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
Part Numbering Convention
March 12, 2015
2
Revision 1.0
Micrel, Inc.
MIC2795/6/7/8/9
Ordering Information
(2)(3)
(MIC2799)
Part Number
MIC2799A-104VMT
(1)
MIC2799P-104VMT
MIC2799A-204VMT
MIC2799P-204VMT
MIC2799A-104VD6
(1)
MIC2799P-104VD6
(1)
MIC2799A-204VD6
(1)
MIC2799P-204VD6
(1)
Marking
Code
EQ
FQ
CQ
DQ
NQ
OQ
KQ
LQ
Enable
(Active-)
Low
Low
High
High
Low
Low
High
High
Output
Active-High Push-Pull
Active-High Push-Pull
Active-Low Push-Pull
Active-Low Push-Pull
Active-High Push-Pull
Active-High Push-Pull
Active-Low Push-Pull
Active-Low Push-Pull
Enable
Delay
Adj.
150ns
Adj.
150ns
Adj.
150ns
Adj.
150ns
Junction
Temperature
Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin 1.6mm × 1.6mm TDFN
6-pin TSOT
6-pin TSOT
6-pin TSOT
6-pin TSOT
Part Numbering Convention (MIC2799)
March 12, 2015
3
Revision 1.0
Micrel, Inc.
MIC2795/6/7/8/9
Pin Configuration
6-Pin TSOT (D6)
(Top View)
6-Pin 1.6mm × 1.6mm TDFN (MT)
(Top View)
Pin Description
Pin
Number
TSOT-6
Pin
Number
TDFN
Pin
Name
Pin Function
/OUT is an active-low output pin and is available in an open-drain or push-pull
configuration.
The /OUT pin is de-asserted high when the SNS voltage decreases below the threshold
voltage. /OUT will remain high for the reset timeout delay after SNS > (V
TH
+ V
HYST
).
In the open-drain configuration, an external pull-up resistor to VDD is required, the push-
pull configuration does not require a pull-up resistor.
OUT is an active-high output pin and is available in an open-drain or push-pull
configuration.
The OUT pin is de-asserted low when the SNS voltage decreases below the threshold
voltage. OUT will remain low for the reset timeout delay after SNS > (V
TH
+ V
HYST
).
In the open-drain configuration, an external pull-up resistor to VDD is required, the push-
pull configuration does not require a pull-up resistor.
Supply Ground.
Active-high enable input. Pulling the EN pin low will disable the part. In A versions, the
output will remain de-asserted for the reset timeout delay after EN goes high. I P versions,
output will assert 150ns after EN goes high. Do not leave floating.
Active-low enable input. Pulling the EN pin high will disable the part. In A versions, the
output will remain de-asserted for the reset timeout delay after EN goes low. I P versions,
output will assert 150ns after EN goes low. Do not leave floating.
Programmable timeout delay. Connect a capacitor (up to 1.5µF) to ground to set a user
defined reset delay time. Leave this pin unconnected for a reset delay time of 20ms.
Connect to VDD via a resistor (40kΩ to 200kΩ) to set a reset delay time of 320ms.
Connect the SNS pin to the voltage to be monitored or through a resistor divider. When this
voltage decreases below the threshold voltage, V
TH
, /OUT is de-asserted high (OUT is de-
asserted low).
Supply voltage pin. Bypass this pin to GND with a 1µF capacitor placed as close to the pin
as possible.
Exposed Pad. Connect to ground plane.
/OUT
1
6
OUT
2
5
GND
EN
3
4
/EN
4
3
CTH
5
2
SNS
6
−
1
EP
VDD
EP
March 12, 2015
4
Revision 1.0
Micrel, Inc.
MIC2795/6/7/8/9
Absolute Maximum Ratings
(4)
Supply Voltage (V
DD
) ....................................
−0.3V
to +6.0V
SNS, EN, /EN, C
TH
...........................................
−0.3V
to V
DD
OUT, /OUT (open drain)................................... -0.3V to +6V
OUT, /OUT (push-pull) ..........................
−0.3V
to V
DD
+0.3V
Lead Temperature (soldering, 10s) ............................ 260°C
Storage Temperature (T
S
) .........................
−55°C
to +150°C
Maximum Junction Temperature (T
J
) ....................... +150°C
ESD Rating (Human Body Model)
(6)
.............................. 2kV
ESD Rating (Machine Model)
(6)
.................................... 200V
Operating Ratings
(5)
Supply Voltage (V
DD
) .................................... +1.0V to +5.5V
SNS, EN, /EN, C
TH
................................................ 0V to V
DD
/OUT, OUT ............................................................ 0V to V
DD
Junction Temperature (T
J
) ........................
−40°C
to +125°C
Junction Thermal Resistance
TSOT-6 (θ
JA
) ................................................. 177.2°C/W
1.6mm × 1.6mm TDFN-6 (θ
JA
) ........................ 92.4°C/W
Electrical Characteristics
(7)
V
DD
= 1.65V to 5.5V; R
L
= 100KΩ; C
L
= 50pF; T
A
= 25°C,
bold
values indicate
−40°C
≤ T
A
≤ +125°C, unless noted.
Parameter
Supply Voltage (V
DD
)
Power-up Reset Voltage (V
DDmin
)
Condition
Output Valid
Output guaranteed in defined state
V
DD
= 3.3V,
C
T
= open
/OUT and OUT not asserted
V
DD
= 5V,
C
T
= open
/OUT and OUT not asserted
V
TH
= 0.400V
Sense rising
V
SNS
= 0.400V
V
SNS
= 5.5V
V
SNS
= 1.05 * V
TH
→ 0.95 * V
TH
−25
1.5
10
0.25*V
DD
0.75*V
DD
−2.0
2
Min.
1.65
Typ.
Max.
5.5
1.0
5
µA
2.5
6
Units
V
V
Supply Current (I
DD
)
Sense Threshold Voltage Accuracy
(V
TH
)
Sense Hysteresis Voltage (V
HYST
)
Sense Input Bias Current
Sense Pulse Width to Reset
Logic-Level Low Input Voltage (EN or
/EN)
Logic-Level High Input Voltage (EN or
/EN)
Notes:
±0.5
1.5
+2.0
2.5
+25
%
%
nA
µA
µs
V
V
4. Exceeding the absolute maximum ratings may damage the device.
5. The device is not guaranteed to function outside its operating ratings.
6. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
7. Specification for packaged product only.
March 12, 2015
5
Revision 1.0
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