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EM6352 Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA

Part No. EM6352
Description  Voltage Detector, High-Precision
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Maker  EMMICRO [EM Microelectronic - MARIN SA]
Homepage  http://www.emmicroelectronic.com
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EM6352 Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA

   
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EM6352
Copyright
© 2006, EM Microelectronic-Marin SA
03/06 – rev.I
1
www.emmicroelectronic.com
Voltage Detector, High-Precision
Description
The EM6352 is an ultra-low current voltage detector
available in a large variety of configurations and very small
packages for maximum flexibility in all end-applications up to
125°C and using power supplies between 1.5V and 5.5V.
This circuit monitors the supply voltage of any electronic
system, and generates the appropriate reset signal without a
delay time. The threshold defines the minimum allowed
voltage which guarantees the good functionality of the
system. As long as VDD stays above the threshold voltage,
the output stays inactive. If VDD drops below VTH, the output
goes active. The output is guaranteed to be in the correct
state for VDD down to 0.8V. There are 12 reset threshold
voltages starting as low as 1.31V and up to 4.63V. The
EM6352 features three output types: active-low push-pull,
active-low open-drain and active-high push-pull.
Small SC70 and SOT23 packages as well as ultra-low
supply current of 2.7µA make the EM6352 an ideal choice
for portable and battery-operated devices.
Typical Application
V
DD
GND
RESET
EM6352
V
DD
GND
RESET
MPU, DSP
V
DD
GND
* R
EXT for open-drain version only
*
Pin Configuration (top view)
SC70-4L (SC-82AB)
1
2
4
3
V
DD
GND
NC
SOT23-5L
1
3
2
5
4
NC
NC
1
2
3
GND
V
DD
SOT23-3L
V
DD
GND
RESET
(RESET)
RESET
(RESET)
RESET
(RESET)
SC70-3L
1
3V
DD
RESET
(RESET)
2
GND
Features
!
Ultra-low supply current of 2.7µA (VDD=3.3V)
!
Operating temperature range: -40°C to +125°C
!
±1.5% reset threshold accuracy
!
12 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V,
2.93V, 2.63V, 2.26V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V,
1.31V
!
3 reset output options:
Active-low RESET push-pull
Active-low RESET open-drain
Active-high RESET push-pull
!
No external components
!
Immune to short negative VDD transients
!
Guaranteed Reset valid down to 0.8V
!
Threshold hysteresis: 2.1% of VTH
!
Very small SOT23-5L, SOT23-3L, SC70-3L and
SC70-4L (SC-82AB) packages
Applications
!
Mobile and cordless phones
!
Modems
!
Printers
!
TV, VCR, Video sets
!
GPS
!
Toys
!
Basestations
!
NiCd cell battery
!
Automotive systems
Block Diagram
(RESET)
RESET
V
DD
GND
+
-
Voltage
Reference
Pin Description
Pin
SOT23-5L
SOT23-3L
SC70-4L
SC70-3L
Name
Function
RESET
Active-low RESET output. RESET remains low while VDD is
below the reset threshold voltage.
1
1
1
2
RESET
Active-high RESET output. RESET remains high while VDD is
below the reset threshold voltage.
2
3
2
3
VDD
Supply Voltage (5.5V max.)
3
2
4
1
GND
Ground
4, 5
-
3
-
N.C.
Not connected. Not internally connected
EM MICROELECTRONIC-MARIN SA


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