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
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “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. 1.0
9/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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