ACE ACE809LBM+H 3-pin microprocessor reset circuit Datasheet

ACE809
3-Pin Microprocessor Reset Circuits
Description
The ACE809 is a cost-effective system supervisor Integrated Circuit (IC) designed to monitor VCC in
digital and mixed signal systems and provide a warning signal when the system power supply is out of
working range, and a reset signal to the host processor when necessary. No external components are
required.
The reset output is driven active within 20μsec of VCC falling through the reset voltage threshold. Reset
is maintained active after VCC rises above the reset threshold. The ACE809 has an active-low RESET
output. The output of the ACE809 is guaranteed valid down to VCC=1V.
The ACE809 is characterized for operation from -40℃ to 85℃, junction temperature. The ACE809 is
optimized to reject fast transient glitches on the VCC line. Low supply current of 7μA (VCC=3.3V) makes
these devices suitable for battery powered applications. The output voltages range from 1.7V to 4.5V in
100mV increments. Standard voltage versions are 2.30, 2.63, 2.93, 3.08, 4.0, 4.38, and 4.63V.
Features








Precision Vcc Monitor for 2.8V, 3.0V,3.3V and 5.0V Supplies
150ms Guaranteed Minimum RESET Output Duration
RESET Output Guaranteed to Vcc=1.0V
Low 7μA Supply Current.
Vcc Transient Immunity.
No External Components.
ESD rating is 7KV(HBM)
Wide operating temperature: -40℃ to 85℃
Application




Embedded systems
Computers
Critical μP power supply monitoring
Battery powered equipment
Absolute Maximum Ratings(1)
Parameter
Symbol
Max
Unit
Supply Voltage
VCC
5.5
V
Output Voltage
RESET -0.3 to (Vcc+0.3)
Input Current
Output Current
Power Dissipation
20
IOUT
PD
Output short circuit duration
mA
20
Internally Limited
V
mA
(3)
Infinite
Thermal resistance junction to ambient
θJA
230
℃/W
Operating Temperature Range
TA
-40~85
℃
Operating junction temperature range
TJ
0 to 125
℃
Storage temperature range
TS
-60 to 150
℃
VER 1.3
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ACE809
3-Pin Microprocessor Reset Circuits
Operating Rating(2)
Parameter
Symbol
Value
Unit
Supply Input Voltage
VCC
2.0 to 5.5 V
Junction Temperature
TJ
0 to 125 ℃
Note:
1.Exceeding the absolute maximum rating may damage the device.
2.The device is not guaranteed to function outside its operating rating.
3.The maximum allowable power dissipation at any TA (ambient temperature) is calculated using:
PD(MAX) = (TJ(MAX) – TA)/ΘJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and
the regulator will go into thermal shutdown. See “Thermal Consideration” section for details
4. RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature range.
Packaging Type
SOT-23-3
3
1
2
SOT-23-3 Description
Function
1
GND
Ground
2
RESET
RESET output remains low while Vcc is below the reset voltage threshold and
for 240msec(typ.) after Vcc rises above reset threshold
3
Vcc
Supply Voltage (typ.)
Ordering information
ACE809 X XX +
H
Halogen - free
Pb - free
BM: SOT-23-3
Voltage : L: 4.63V / M: 4.38V / J: 4.00V / T: 3.08V / S: 2.93V / R: 2.63V
VER 1.3
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ACE809
3-Pin Microprocessor Reset Circuits
Electrical Characteristics
Vcc=5V for L/M/J ;3.3V for T/S ;3.0V for R ,TA = 25°C, unless otherwise specified.
Parameter
Symbol
Input Voltage
Vcc
Supply Current
Icc
Reset Threshold
VTH
Conditions
Min.
2.0
ACE809-4.63
ACE809-4.38
ACE809-4.00
ACE809-3.08
ACE809-2.93
ACE809-2.63
ACE809-2.3V
4.51
4.27
3.90
3.00
2.85
2.56
2.18
Reset Threshold Temperature Coefficient(4)
Vcc to Reset Delay Vcc=VTH to
(VTH-100mV)
Reset Active Timeout Period
RESET Output Voltage Low
VOL
RESET Output Voltage High
VOH
Typ. Max.
7
4.63
4.38
4.00
3.08
2.93
2.63
2.25
Unit
5.5
V
10
4.75
4.49
4.10
3.16
3.00
2.70
2.33
uA
V
30
ppm/
℃
20
usec
150
msec
ISINK=3mA
0.4
ISOURCE=800uA 0.8Vcc
V
V
Typical Performance Characteristics
Vth vs. Temperature
Temperature (℃)
T-delay vs. Temperature
Temperature (℃)
VER 1.3
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ACE809
3-Pin Microprocessor Reset Circuits
Packing Information
SOT-23-3
VER 1.3
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ACE809
3-Pin Microprocessor Reset Circuits
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.3
5
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