Data Sheet
PT7M6218 -6250CL/CH /NL/CLL/NLL
Voltage Detector
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Features
•
Highly precision: -0.7%~+0.5% (25°C);
±1%(-10°C
to 60°C, for PT7M62xxxx);
±1.5%(-10°C
to 60°C,
for PT7M62xxxxB)
•
•
•
•
•
Low power consumption: 0.9uA @ 3V Vcc
Detect voltage range: 1.8 to 5V in 100mV increments
Operating voltage range: 1.2V ~ 5.5V
Output configuration: N-channel open drain or
CMOS
Special threshold voltage product according to
customer need
The family is available with three output stage options:
push-pull with active-low output, push-pull with active-
high output, and open drain with active-low output.
Ordering Information
Part Number
PT7M62xxCLXTA3EX
PT7M62xxCLXTA5EX
PT7M62xxCLXC3EX
PT7M62xxCLXC4EX
PT7M62xxCLXNBEX
PT7M62xxCLXTDEX
PT7M62xxCHXTA3EX
PT7M62xxCHXTA5EX
PT7M62xxCHXC3EX
PT7M62xxCHXTDEX
PT7M62xxNLXTA3EX
PT7M62xxNLXTA5EX
PT7M62xxNLXC3EX
PT7M62xxNLXC4EX
PT7M62xxNLXNBEX
PT7M62xxNLXTDEX
PT7M62xxCLLXNBEX
PT7M62xxNLLXNBEX
Package
Lead free SOT23-3
Lead free SOT23-5
Lead free SC70-3
Lead free SC70-4
Lead free TO92
Lead free SOT89
Lead free SOT23-3
Lead free SOT23-5
Lead free SC70-3
Lead free SOT89
Lead free SOT23-3
Lead free SOT23-5
Lead free SC70-3
Lead free SC70-4
Lead free TO92
Lead free SOT89
Lead free TO92
Lead free TO92
Description
The PT7M62xx serials of ultra-low-power voltage
detectors monitor battery, power-supply and system
voltages. Each circuit includes a precision bandgap
reference, a comparator, internally trimmed resistor
networks that set specified trip thresholds, and an internal
5% threshold hysteresis circuit. Output is asserted when
V
CC
rises above V
TH+
(V
TH+
= V
TH-
×1.05)
and remains
asserted until V
CC
falls below the internal V
TH-
. These
devices provide excellent circuit reliability and low cost
by eliminating external components and adjustments
when monitoring nominal system voltages from +1.8V to
+5V in 100mV increments. The series are voltage
detectors with a propagation delay of 20µs(V
CC
rise).
Note 1:
“xx” refer to voltage range, see below table 1.
Note 2:
“X” refer to accuracy, no suffix means that the
accuracy is ±1.0% (-10°C to 60°C), B means that the accuracy
is ±1.5% (-10°C to 60°C).
Note 3:
“(E)X” refer to packing, no “X” means tube packing,
adding “X” means tape and reel packing.
Table 1 Suffix “xx” definition of PT7M62xx
Suffix xx
18
19
20
21
22
23
24
V
TH+
(V)
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Suffix xx
25
26
27
28
29
30
31
V
TH+
(V)
2.5
2.6
2.7
2.8
2.9
3.0
3.1
Suffix xx
32
33
34
35
36
37
38
V
TH+
(V)
3.2
3.3
3.4
3.5
3.6
3.7
3.8
Suffix xx
39
40
41
42
43
44
45
V
TH+
(V)
3.9
4.0
4.1
4.2
4.3
4.4
4.5
Suffix xx
46
47
48
49
50
V
TH+
(V)
4.6
4.7
4.8
4.9
5.0
PT0270(02/07)
1
Ver: 0
Data Sheet
PT7M6218 -6250CL/CH /NL/CLL/NLL
Voltage Detector
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Table 2 Function comparison
Reset Output
Item
1
2
3
4
5
Part No.
PT7M62xxCL
PT7M62xxCLL
PT7M62xxCH
PT7M62xxNL
PT7M62xxNLL
Open-Drain
Active high
Active low
-
-
-
-
-
-
-
-
√
√
Push-Pull
Active high
Active low
-
√
-
√
-
-
√
-
-
-
Threshold
1.8V to 5.0V in 100mV
increments
Block Diagram
Block Diagram of PT7M62xxCL/CH/CLL
Vcc
-
+
RST / (RST)
(RST is for
62xxCH only)
GND
Reference
Voltage
1.25V
Block Diagram of PT7M62xxNL/NLL
Vcc
-
+
RST
GND
Reference
Voltage
1.25V
PT0270(02/07)
2
Ver: 0
Data Sheet
PT7M6218 -6250CL/CH /NL/CLL/NLL
Voltage Detector
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Pin Configuration
SC70-4
PT0270(02/07)
3
Ver: 0
Data Sheet
PT7M6218 -6250CL/CH /NL/CLL/NLL
Voltage Detector
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Pin Description
Name
Type
Description
111
Reset Output (PT7M62xxCL/NL/CLL/NLL):
RST is asserted when V
CC
drops below voltage threshold
V
TH-
. Active low.
Reset Output (PT7M62xxCH).
RST is asserted when V
CC
drops below voltage threshold V
TH-
. Active high.
Ground
Supply Voltage.
RST
O
RST
GND
VCC
O
P
P
Typical Operation Circuit
PT7M62xxNL Application Example
V
IN
PT7M62xxNL
R
L
Vcc
GND
RST
Please use N-ch open drains configuration, when a resistor
RIN
is connected between the V
CC
pin and power source V
IN
.
In such cases, please ensure that R
IN
is less than 10kΩ and that C is more than 0.1µF. R
L
could be 1kΩ to 510kΩ.
PT0270(02/07)
4
Ver: 0
Data Sheet
PT7M6218 -6250CL/CH /NL/CLL/NLL
Voltage Detector
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Maximum Ratings
Storage Temperature ............................................................-65
o
C to +150
o
C
Ambient Temperature with Power Applied.......................... -40
o
C to +85
o
C
Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +6.0V
DC Input Voltage (All inputs except Vcc and GND)......-0.3V to V
CC
+0.3V
DC Output Current (All outputs) ..........................................................20mA
Power Dissipation .......................................... 320mW (Depend on package)
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions above those indicated in the operational sec-
tions of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics
(V
CC
= 1.2V to 5.5V, T
A
= -40~85ºC, unless otherwise noted. Typical values are at T
A
= +25ºC)
Description
Supply Voltage
Sym.
V
CC
Test Conditions
Min
1.0
Typ
-
Max
5.5
Unit
V
µA
µA
T
A
= 0~70ºC
T
A
= -40~85ºC
V
CC
= 3V. No load.
V
CC
= 5V. No load.
1.2
-
-
-
0.9
1.3
-
-
-
-
-
-
-
5.5
3.0
3.6
-
-
-
0.3
0.3
0.4
1
(V
TH+
)
×1.005
(V
TH+
)
×1.015
(V
TH+
)
×1.01
Supply Current
I
CC
V
CC
≥
1.8V, I
source
= 1mA
Output high
Output
Driving
Output low
V
OL
V
OH
0.8×Vcc
0.8×Vcc
0.8×Vcc
-
-
-
-
(V
TH+
)
×0.993
(V
TH+
)
×0.985
(V
TH+
)
×0.99
V
CC
≥
2.5V, I
source
= 3mA
V
CC
≥
4.5V, I
source
= 8mA
V
CC
≥
1.2V, I
sink
= 1mA
V
CC
≥
2.5V, I
sink
= 4mA
V
CC
≥
4.5V, I
sink
= 9mA
V
V
Open-Drain Output
Leakage Current
I
LKG
-
+25°C
µA
V
TH+
V
TH+
V
TH+
Voltage Threshold
V
TH+
-10°C~60°C(PT7M62xxxxB）
-10°C~60°C(PT7M62xxxx）
V
V
HYST
= [(V
TH+
)-(V
TH-
)]/(V
TH-
)
%
3
5
6
×100%
Note:
V
TH-
= V
TH+
/ 1.05. V
TH-
is voltage threshold when Vcc falls from high to low.
V
TH
＋
is voltage threshold when Vcc
rises from low to high.
voltage threshold Hysteresis
V
HYST
PT0270(02/07)
5
Ver: 0
单片机
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