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PT7M6435CLC3E

Description
Power Management Circuit,
CategoryPower/power management    The power supply circuit   
File Size429KB,10 Pages
ManufacturerPericom Technology Inc
Download Datasheet Parametric View All

PT7M6435CLC3E Overview

Power Management Circuit,

PT7M6435CLC3E Parametric

Parameter NameAttribute value
MakerPericom Technology Inc
package instruction,
Reach Compliance Codeunknow

PT7M6435CLC3E Preview

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Data Sheet
PT7M6418CL/CH /NL/BL-6450CL/CH /NL/BL
µp
Supervisor
General
Features
High accuracy:
±1.5%
(25°C)
Low power consumption: 0.9uA @ 3V Vcc
Detect voltage range: 1.8 to 5V in 100mV increments
Operating voltage range: 1.2V ~ 5.5V
Operating temperature range: -40°C to + 85°C
Detect voltage accuracy over temperature:
±2.5% ×
TYP
Output configuration: N-channel open drain or
CMOS
Reset timeout period at least 140ms
The PT7M64xx series are µP supervisory circuits with a
minimum reset timeout period of 140ms. Each circuit
includes a precise bandgap reference, a comparator, a
reset timeout circuit, internally trimmed resistor networks
that set specified trip thresholds, and an internal 5%
threshold hysteresis circuit (see the
Functional Diagram).
Output is asserted when V
CC
falls below the internal V
TH-
after a reset timeout period and remains asserted until
V
CC
rises above V
TH+
(V
TH+
= V
TH-
×1.05).
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 36µs.
The family is available with four output stage options:
push-pull with active-low output, push-pull with active-
high output, open drain with active-low output and
bidirection port with active-low output and pushbutton
reset input. These devices specified over the -40°C to
+85°C temperature range.
Ordering Information
Part Number
PT7M64xxCLTA3
PT7M64xxCLTA5
PT7M64xxCLC3
PT7M64xxCHTA3
PT7M64xxCHTA5
PT7M64xxCHC3
Package
SOT23-3
SOT23-5
SC70-3
SOT23-3
SOT23-5
SC70-3
Part Number
PT7M64xxNLTA3
PT7M64xxNLTA5
PT7M64xxNLC3
PT7M64xxBLTA3
PT7M64xxBLTA5
PT7M64xxBLC3
Package
SOT23-3
SOT23-5
SC70-3
SOT23-3
SOT23-5
SC70-3
Note 1:
“xx” refer to voltage range, see below table 1.
Note 2:
Lead free package is available by adding “E” after
each part no. For example: PT7M64xxCLTA3E is lead free
package part no for
PT7M64xxCLTA3
Table 1. Suffix “xx” definition of PT7M64xx
Suffix xx
V
TH-
(V)
Suffix xx
V
TH-
(V)
18
1.8
25
2.5
19
1.9
26
2.6
20
2.0
27
2.7
21
2.1
28
2.8
22
2.2
29
2.9
23
2.3
30
3.0
24
2.4
31
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
Table 2.
Function comparison
Reset Output
Item
1
2
3
4
Part No.
PT7M64xxCL
PT7M64xxCH
PT7M64xxNL
PT7M64xxBL
Open-Drain
Active high
Active low
-
-
-
-
-
-
-
Push-Pull
Active high Active low
-
-
-
-
Reset
bi-direction
-
-
1.8V to 5.0V in
100mV increments
Threshold
PT0200(4/05)
1
Ver: 2
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Data Sheet
PT7M6418CL/CH /NL/BL-6450CL/CH /NL/BL
µp
Supervisor
Block Diagram
Block Diagram of PT7M64xxCL/CH
Vcc
-
+
RST / (RST)
(RST is for
64xxCH only)
GND
Reference
Voltage
1.25V
Block Diagram of PT7M64xxNL
VCC
-
+
RST
Reset
Timeout
GND
Reference
Voltage
1.25V
Block Diagram of PT7M64xxBL
Vcc
VCC Resistor
Divider
Reset
Monitor
Timing
Delay
5k
RST
T.C.
Reference
GND
PT0200(4/05)
2
Ver: 2
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Data Sheet
PT7M6418CL/CH /NL/BL-6450CL/CH /NL/BL
µp
Supervisor
Pin Configuration
PT7M64xxCLC3
PT7M64xxNLC3
PT7M64xxBLC3
1
GND
1
PT7M64xxCLTA3
PT7M64xxNLTA3
PT7M64xxBLTA3
RST
1
PT7M64xxCLTA5
PT7M64xxNLTA5
PT7M64xxBLTA5
NC
VCC
5
VCC
3
VCC
3
2
GND
2
RST
SC70-3
2
GND
SOT23-3
3
GND
RST
4
SOT23-5
PT7M64xxCHC3
1
GND
1
PT7M64xxCHTA3
RST
1
PT7M64xxCHTA5
NC
VCC
5
VCC
3
VCC
3
2
GND
2
RST
SC70-3
2
GND
SOT23-3
3
GND
RST
4
SOT23-5
Pin Description
Name
RST
Type
Description
Reset Output (PT7M64xxCL/NL/BL):
RST is asserted when V
CC
drops below voltage threshold V
TH-
.
Active low. For PT7M64xxBL, RST is also pushbutton reset input
Reset Output (PT7M64xxCH).
RST is asserted when V
CC
drops below voltage threshold V
TH-
. Active high.
Ground
Supply Voltage.
O
RST
GND
V
CC
O
P
P
PT0200(4/05)
3
Ver: 2
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Data Sheet
PT7M6418CL/CH /NL/BL-6450CL/CH /NL/BL
µp
Supervisor
Typical Operation Circuit
PT7M64xxNL Application Example
Vcc1/Vcc2
V
CC1
PT7M64xxNL
RL
Vcc
GND
RST
RESET
For typical application, R
L
could be 100kΩ, R
IN
less than 10kΩ and that C more than 0.1µF.
PT7M64xxBL Application Example
PT0200(4/05)
4
Ver: 2
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Data Sheet
PT7M6418CL/CH /NL/BL-6450CL/CH /NL/BL
µp
Supervisor
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
0.6
0.9
0.8×Vcc
0.8×Vcc
0.8×Vcc
5.5
1.2
2.0
Supply Current
I
CC
Output high
(Push-Pull
only)
Output
Driving
Output low
V
CC
1.8V, I
source
= 1mA
V
OH
V
CC
2.5V, I
source
= 3mA
V
CC
4.5V, I
source
= 8mA
V
CC
1.2V, I
sink
= 1mA
V
0.3
0.3
0.4
1
µA
V
V
OL
V
CC
2.5V, I
sink
= 4mA
V
CC
4.5V, I
sink
= 9mA
Open-Drain Output
Leakage Current
I
LKG
+25°C
V
TH-
-40°C~85°C
(V
TH-
)
×0.98
(V
TH-
)
×0.975
(V
TH-
)
×0.98
(V
TH+
)
×0.975
V
TH-
V
TH-
V
TH-
V
TH+
4.5
Voltage Threshold*
+25°C
V
TH+
-40°C~85°C
Voltage threshold Hysteresis
Pushbutton Detect
Internal Pull-Up Resistor
V
HYST
P
BDV
R
P
V
HYST
= [(V
TH+
)-(V
TH-
)]/(V
TH-
)
×100%
-40°C~85°C, Vcc = 5V
(V
TH-
)
×1.02
(V
TH-
)
×1.025
(V
TH-
)
×1.02
(V
TH+
)
×1.025
V
3
0.7
3.75
6
1.2
%
V
kΩ
5
6.25
*
V
TH+
= 1.05
×
V
TH-.
V
TH-
is VCC dropping from high to low voltage. V
TH+
is V
CC
rising from low to high voltage.
PT0200(4/05)
5
Ver: 2
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