MP6400
The Future of Analog IC Technology
Low Quiescent Current
Programmable-Delay
Supervisory Circuit
FEATURES
•
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•
•
•
•
•
•
•
•
•
•
•
Fixed Threshold Voltages for Standard
Voltage Rails From 0.9V to 5V and
Adjustable Voltage From 0.4V are Available
Low Quiescent Current: 1.6uA typ
Power-On Reset Generator with Adjustable
Delay Time: 2.1ms to 10s
High Threshold Accuracy: ±1% typ
M R
Manual Reset (
) Input
R E S E T
Open-Drain
Output
Immune to Short Negative SENSE voltage
Guaranteed Reset Valid to V
CC
=0.8V
6 Pin TSOT23 and 2mm×2mm QFN
DSP or Micro controller Applications
Laptop/Desktop Computers
PDAs/Hand-Held Products
Portable/Battery-Powered Products
FPGA/ASIC Applications
DESCRIPTION
The MP6400 family is the microprocessor (µP)
supervisory circuit which can monitor and
provide reset function for system voltages from
0.4V. When either the SENSE voltage falls
below its threshold (V
IT
) or the voltage of
M R
manual reset (
) is pulled to a logic low, the
R E S E T
signal will be asserted. The reset
voltage can be factory-set for standard voltage
rails from 0.9V to 5V, while the MP6400DG(J)-
01 reset voltage is adjustable with an external
M R
resistor divider. When SENSE
E
voltage and
R E S T
is driven to a
exceed their thresholds,
logic high after a user-programmable delay time.
The MP6400 has a very low quiescent current
of 1.6μA typically, which makes it ideal suitable
for battery-powered applications. It provides a
precision reference to achieve ±1% threshold
accuracy. The reset delay time can be selected
by a capacitor which is connected between
C
DELAY
and GND, allowing the user to select any
delay time from 2.1ms to 10s. 380ms delay time
is selected by connecting the C
DELAY
pin to V
CC
,
while 24ms delay time by leaving the C
DELAY
pin
float. MP6400 is available in TSOT23 and
2mm×2mm 6-pin QFN packages.
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V
CC
R1
VCC
Microprocessor
SENSE
R3
DSP
Microcontroller
MP6400
C1
C2
R2
MR
GND
RESET
C
DELAY
C
DELAY
C3
RESET
GND
MP6400 Rev. 0.91
12/16/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
TM
MP6400 -- LOW QUIESCENT CURRENT PROGRAMMABLE-DELAY SUPERVISORY CIRCUIT
ORDERING INFORMATION
Part Number*
MP6400DG-XX
MP6400DJ-XX
Package
QFN6 (2x2mm)
TSOT23-6
Free Air Temperature (T
A
)
–40°C to +85°C
*For
Tape & Reel, add suffix –Z (e.g. MP6400DG–XX-Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP6400DG–XX-LF–Z).
**For
Tape & Reel, add suffix –Z (e.g. MP6400DJ–XX-Z);
For RoHS compliant packaging, add suffix –LF(e.g. MP6400DJ–XX-LF–Z).
PACKAGE REFERENCE
TOP VIEW
VCC
SENSE
C
DELAY
1
2
3
6
5
4
RESET
GND
MR
TOP VIEW
RESET
GND
MR
1
2
3
6
5
4
VCC
SENSE
C
DELAY
QFN6 (2mm x 2mm)
TSOT23-6
(1)
ABSOLUTE MAXIMUM RATINGS
Recommended Operating Conditions
(3)
Supply Voltage V
CC
......................... -0.3 to 6.5 V
C
DELAY
Voltage V
CDELAY
....... –0.3V to V
CC
+ 0.3V
SENSE Voltage V
SENSE
....................–0.3V to 6V
All Other Pins ..............................–0.3V to +6.5V
RESET Current
I
RESET
................................ 5mA
Supply Voltage V
CC
............................1.8V to 6V
Operating Junct. Temp (T
J
)..... –40
°
C to +125
°
C
Thermal Resistance
(4)
Continuous Power Dissipation (T
A
= +25°C)
(2)
QFN6 (2mmx2mm) .................................... 2.5W
TSOT23-6 ................................................ 0.57W
Junction Temperature ...............................150
°
C
Lead Temperature ....................................260
°
C
Storage Temperature.............. –65
°
C to +150
°
C
QFN6 (2mmx2mm) ................50 ...... 12 ...
°
C/W
TSOT23-6 ..............................220 .... 110 ..
°
C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX)=(T
J
(MAX)-
T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7 4-layer board.
θ
JA
θ
JC
MP6400 Rev. 0.91
12/16/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
2
TM
MP6400 -- LOW QUIESCENT CURRENT PROGRAMMABLE-DELAY SUPERVISORY CIRCUIT
ELECTRICAL CHARACTERISTICS
1.8V≤V
CC
≤6V,
R
3
= 100kΩ, C
3
= 47pF, T
A
= -40°C to +85°C, Typical values are at T
A
=+25°C, unless
otherwise noted.
Parameters
Input Supply Range
Symbol Condition
V
CC
V
CC
asserted.
,
C
DELAY
open
R E S E T
= 3.3V,
not
M R
R E S E T
Min
1.8
Typ
Max
6
Units
V
µA
,
1.6
3.5
Supply Current
(current into V
CC
pin)
I
CC
Low-level Output Voltage
V
OL
Power-up Reset Voltage
(5)
Negative-going Input Threshold
Accuracy
Hysteresis on V
IT
Pin
M R
Internal Pull-up Resistance
Input Current at SENSE Pin
V
IT
V
HYS
R
M R
not
V
CC
= 6V,
M R
R E S E T
asserted.
,
,
C
DELAY
open
1.3V
≤
V
CC
< 1.8V,
I
OL
= 0.4mA
1.8V
≤
V
CC
≤
6V,
I
OL
= 1.0mA
V
OL
(max)
5
=
A
0.2V,
I
1 u
R E S E T
R E S E T
1.85
12
0.3
0.4
0.8
µA
V
V
V
%
V
IT
%
kΩ
=
T
rise(Vcc)
≥15µs/V
V
SENSE
falling slowly
±1.0
1.5
50
MP6400DJ-01
V
SENSE
= V
IT
Fixed versions
V
SENSE
= 6V
-25
2.4
R E S E T
±2.0
3.5
110
+25
nA
µA
I
SENSE
V
R E S E T
Leakage Current
V
IL
V
IH
Transient
t
w
R E S E T
= 6V,
not
M R
M R
asserted
0.7V
CC
V
IH
= 1.05 V
IT
,
V
IL
= 0.95 V
IT
C
DELAY
= Open
C
DELAY
= V
CC
(6)
C
DELAY
= 150pF
C
DELAY
= 10nF
(6)
V
IH
= 0.7 V
CC
,
V
IL
= 0.25 V
CC
V
IH
= 1.05 V
IT
,
V
IL
= 0.95 V
IT
17.5
15
230
1.3
61
24
380
2.1
102
160
17.5
300
0.25V
CC
nA
V
V
µs
Logic Low Input
Logic High Input
SENSE
Maximum
Duration
34
530
3
142
ms
ms
ms
ms
ns
µs
R E S E T
Delay Time
R E S E T
t
d
M R
to
Propagation Delay
R E S E T
t
pHL1
t
pHL2
High to Low Level
R E S E T
SENSE to
Delay,
Note:
R E S E T
5) The lowest supply voltage (V
CC
) at which
becomes active.
6) Guaranteed by design.
MP6400 Rev. 0.91
12/16/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
3
MP6400 – LOW QUIESCENT CURRENT PROGRAMMABLE-DELAY SUPERVISORY CIRCUIT
ORDERING INFORMATION
(7)
Product
MP6400DG-01
MP6400DJ-01
MP6400DG-09
MP6400DJ-09
MP6400DG-12
MP6400DJ-12
MP6400DG-125
MP6400DJ-125
MP6400DG-15
MP6400DJ-15
MP6400DG-18
MP6400DJ-18
MP6400DG-25
MP6400DJ-25
MP6400DG-30
MP6400DJ-30
MP6400DG-33
MP6400DJ-33
MP6400DG-50
MP6400DJ-50
Package
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
QFN
TSOT23
Top Mark
5B
4B
Contact Factory
Nominal Supply Voltage
Adjustable
0.9V
1.2V
1.25V
1.5V
1.8V
2.5V
3.0V
3.3V
5.0V
Threshold Voltage (VIT)
0.4V
0.84V
1.12V
1.16V
1.40V
1.67V
2.33V
2.79V
3.07V
4.65V
““
““
““
““
““
““
““
““
““
““
““
9S
8S
9R
3S
Contact Factory
““
Note:
7) In “MP6400DG(J)- _ _”, the “_ _” are placeholders for the monitored voltage levels of the devices. Desired monitored voltages are set by
the suffix found in ordering information.
MP6400 Rev. 0.9
12/16/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
4
MP6400 – LOW QUIESCENT CURRENT PROGRAMMABLE-DELAY SUPERVISORY CIRCUIT
PIN FUNCTIONS
QFN
Pin #
TSOT
Pin #
Name
Description
is an open drain signal which will be asserted when the SENSE voltage
M R
drops below
S
a
E
preset threshold or when the manual reset (
) pin drops to a logic
R E
T
delay time is programmable from 2.1ms to 10s by using external
low. The
capacitors. A pull-up
E
resistor bigger than 10k should be connected this pin to
R S E T
outputting a higher voltage than V
CC
is allowable.
supply line, and the
Ground.
M R
R E S E T
R E S E T
6
1
R E S E T
5
4
2
3
GND
M R
3
4
2
1
5
6
) can introduce another logic signal to control the
. It is
The manual reset (
internally connected to V
CC
through a 90kΩ resistor.
Programmable reset delay time pin. When C
DELAY
connected to V
CC
through a
resistor between 50kΩ and 200kΩ, a 380ms delay time is selected. When C
DELAY
C
DELAY
floated, the delay time is 24ms. A capacitor bigger than 150pF connected C
DELAY
to
GND could be used to get the user’s programmable time from 2.1ms to 10s.
SENSE pin is connected to the monitored system voltage. When the monitored
R E S E T
SENSE
voltage is below desired threshold,
is asserted.
V
CC
Supply voltage. A 0.1uF decoupling ceramic capacitor should be put close to this
pin.
DETAIL DESCRIPTION
The MP6400 product family asserts a
signal when either the SENSE pin
R
voltage is
M
lower than V
IT
or the manual reset ( ) is driven
low. The MP6400 family can be monitored a fixed
voltage from 0.9V to 5.0V, while the
MP6400DG(J)-01 can monitor any voltage above
0.4V by adjusting the external
M
resistor divider.
R
) and SENSE
After both the manual reset (
R E S E T
voltages exceed their thresholds, the
R E S E T
output remains asserted for a user’s
R E S E T
programmable delay time. Two fixed
delay
times are user-selectable: 380ms delay time by
connecting the C
DELAY
pin to V
CC
, and 24ms delay
time by leaving the C
DELAY
pin float. Any delay
time from 2.1ms to 10s could be gotten by
connecting a capacitor between C
DELAY
and GND.
The wide monitor voltage and programmable
reset delay time make MP6400 product family
suitable for a broad array of applications.
MP6400 Rev. 0.91
12/16/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5
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