MP6400
Low Quiescent Current
Programmable-Delay
Supervisory Circuit
MP6400 Rev. 1.1 www.MonolithicPower.com 1
12/27/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
The Future of Analog IC Technology
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
manual reset (
) is pulled to a logic low, the
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
resistor divider. When SENSE voltage and
exceed their thresholds,
is driven to a
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.
FEATURES
• 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
• Manual Reset (
) Input
• Open-Drain
Output
• Immune to Short Negative SENSE voltage
• Guaranteed Reset Valid to V
CC
=0.8V
• 6 Pin TSOT23 and 2mm×2mm QFN
APPLICATIONS
• DSP or Micro controller Applications
• Laptop/Desktop Computers
• PDAs/Hand-Held Products
• Portable/Battery-Powered Products
• FPGA/ASIC 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 Monolithi
Power Systems, Inc.
TYPICAL APPLICATION
V
CC
R1
VCC
SENSE
MR
GND
C
DELAY
C
DELAY
C3
GND
RESET
RESET
R2
Microprocessor
DSP
Microcontroller
MP6400
C1
C2
R3
