TS3809/3810 Series
Taiwan Semiconductor
Microprocessor Reset Circuit
GENERAL DESCRIPTION
The TS3809/3810 series are used for microprocessor
(µP) supervisory circuits to monitor the power supplies
in µP and digital systems. They provide excellent circuit
reliability
and
low
cost
by
eliminating
external
●
●
●
●
●
●
●
components and adjustments when used with +5V,
+3.3V, +3.0V, +2.5V powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
CC
supply voltage declines
200ms after V
CC
has risen above the reset threshold.
Reset thresholds suitable for operation with a variety of
below a preset threshold, keeping it asserted for at least
FEATURES
●
●
High Accurate
±2%
Precision monitoring of +3V, +3.3V, and +5V
Power supply voltage
Fully specified over temperature
Available in three output configurations
Push-Pull RESET low output (TS3809)
Push-Pull (RESET) high output (TS3810)
200ms typ. Power-on reset pulse width
25µs supply current
Guaranteed reset valid to V
CC
=+1V
supply voltages are available. TS3809/3810 series have
push pull outputs. TS3809 series has an active low
RESET output, while the TS3810 has an active high
RESET output The reset comparator is designed to
guaranteed to be in the correct logic state for V
CC
down
to 1.0V. Low supply current makes TS3809/3810 series
ideal for use in portable equipment.
ignore fast transients on V
CC
, and the outputs are
TYPICAL APPLICATIN CIRCUIT
Document Number: DS_P0000206
TS TS
38 380
10 9C
CX X
No A A
t R /B/ /B/
eco C/ C/G
D/
mm E R
/F/ FG
ed
ed G R
FG
●
Power supply transient immunity
APPLICATION
●
●
Battery-operated systems and controllers
Intelligent instruments
●
Critical
µP
and
µC
power monitoring
Automotive
●
●
Portable / Battery powered equipment
SOT-23
Pin Definition
TS3809
TS3810
1. GND
1. GND
2. RESET
2. (RESET)
3. VCC
3. VCC
1
Version: E15
TS3809/3810 Series
Taiwan Semiconductor
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Terminal Voltage (with respect to GND)
RESET & (RESET) push-pull
Input Current, V
CC
Output Current, RESET, (RESET)
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
o
SYMBOL
V
CC
V
RESET
I
CC
I
O
P
D
T
J.OPR
T
STG
LIMIT
GND - 0.3 to GND +6.5
GND - 0.3 to V
CC
+0.3
20
5
(T
J
-T
A
)/R
θJA
-40 ~ +125
-65 ~ +150
10
UNIT
V
V
mA
mA
mW
o
C
C
TS TS
38 380
10 9C
CX X
No A A
t R /B/ /B/
eco C/ C/G
D/
mm E R
/F/ FG
ed
ed G R
FG
T
LEAD
SYMBOL
R
θJC
R
θJA
o
Lead Soldering Temperature (260 C)
s
THERMAL PERFORMANCE
PARAMETER
MAXIMUM
110
250
UNIT
ºC/W
ºC/W
Thermal Resistance from Junction to Case
Thermal Resistance from Junction to Ambient
(Note 1)
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, T
A
= 25°C unless otherwise noted)
PARAMETER
CONDITIONS
o
o
SYMBOL
MIN
TYP
MAX
UNIT
Input Supply Voltage
Supply Current
T
A
=-40 C~+85 C
V
CC
=V
TH
+ 1V
V
CC
I
CC
1.0
--
--
6
V
µA
25
35
TS3809/3810CXA
4.54
4.63
4.71
TS3809/3810CXB
4.29
3.92
3.02
2.87
2.57
2.20
--
1
4.38
4.00
3.08
2.93
2.63
2.25
50
--
4.46
4.08
3.15
3.00
2.69
2.30
--
TS3809/3810CXC
TS3809/3810CXD
TS3809/3810CXE
TS3809/3810CXF
Reset Threshold
V
TH
V
TS3809/3810CXG
T
A
=0~+85ºC
Reset Threshold
Set-up Time
Temperature Coefficient
V
CC
to Reset Delay
Period
V
THT
ppm/ C
µs
µs
ms
o
V
CC
= 0 ~ (V
TH
- 100mV)
T
SET
T
RD
--
V
CC
= V
TH
~ (V
TH
- 100mV)
--
20
--
Reset Active Timeout
T
A
=0~+85ºC
1.8V<V
CC
<V
TH(MAX)
,
T
DELAY
140
200
260
RESET Output (TS3809)
Voltage Low
RESET Output (TS3809)
Voltage High
(RESET) Output (TS3810)
Voltage Low
I
SINK
=1.2mA
1.2V<V
CC
<1.8V,
I
SINK
=50µA
V
CC
> V
TH(MAX)
,
I
SOURCE
=500µA
V
CC
> V
TH(MAX)
, I
SINK
=1.2mA
V
OL
--
--
0.3
V
V
OH
V
OL
0.8 V
CC
--
--
--
--
0.3
V
V
Document Number: DS_P0000206
2
Version: E15
TS3809/3810 Series
Taiwan Semiconductor
CHARACTERISTICS CURVES
(T
C
= 25°C unless otherwise noted)
Figure 1. Threshold Voltage vs. Temperature
Figure 5. Power-Down T
DELAY
vs. Temperature
Document Number: DS_P0000206
TS TS
38 380
10 9C
CX X
No A A
t R /B/ /B/
eco C/ C/G
D/
mm E R
/F/ FG
ed
ed G R
FG
Figure 2. T
DELAY
vs. Temperature
Figure 3. Supply Current vs. Temperature
5
Figure 4. Supply Current vs. Threshold Voltage
Figure 6. Output Voltage vs. Output Current
Version: E15
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