S-19405 Series
www.ablic.com
© ABLIC Inc., 2017-2018
AUTOMOTIVE, 125°C OPERATION,
3.8
μA
CURRENT CONSUMPTION
WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.2
_00
The S-19405 Series is a watchdog timer developed using CMOS technology, which can operate with low current
consumption of 3.8
μA
typ. The reset function and the low voltage detection function are available.
Caution
This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in
the purpose, contact to ABLIC Inc. is indispensable.
Features
•
Detection voltage:
•
Detection voltage accuracy:
•
Input voltage:
•
Hysteresis width:
•
Current consumption:
•
Reset time-out period:
•
Watchdog operation is switchable:
•
Watchdog operation voltage range:
•
Watchdog input edge is selectable:
•
Operation temperature range:
•
Lead-free (Sn 100%), halogen-free
•
AEC-Q100
qualified
*1
*1.
Contact our sales office for details.
2.0 V to 5.0 V, selectable in 0.1 V step
±2.0%
V
DD
= 0.9 V to 6.0 V
5% typ.
3.8
μA
typ.
14.5 ms typ. (C
POR
= 2200 pF)
Enable, Disable
V
DD
= 2.5 V to 6.0 V
Rising edge, falling edge
Ta =
−40°C
to
+125°C
Applications
•
Automotive (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)
Packages
•
TMSOP-8
•
HSNT-8(2030)
1
AUTOMOTIVE, 125°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.2
_00
S-19405 Series
Block Diagrams
1.
S-19405 Series A / B Type
CWDT
VDD
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
Reference
voltage circuit
VSS
Voltage detection
circuit
CPOR
Figure 1
2.
S-19405 Series D / E Type
CWDT
VDD
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
Reference
voltage circuit
VSS
Voltage detection
circuit
CPOR
Figure 2
2
AUTOMOTIVE, 125°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.2
_00
S-19405 Series
3.
S-19405 Series G / H Type
CWDT
VDD
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
Reference
voltage circuit
VSS
Voltage detection
circuit
CPOR
Figure 3
4.
S-19405 Series J / K Type
CWDT
VDD
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
Reference
voltage circuit
VSS
Voltage detection
circuit
CPOR
Figure 4
3
AUTOMOTIVE, 125°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.2
_00
S-19405 Series
AEC-Q100 Qualified
This IC supports AEC-Q100 for the operation temperature grade 1.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
Users can select the product type, detection voltage, and package type for the S-19405 Series. Refer to "1.
Product
name"
regarding the contents of product name, "2.
Product type list"
regarding the product types, "3.
Packages"
regarding the package drawings.
1.
Product name
S-19405
x
xx
A -
xxxx
U
4
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications
*1
K8T2: TMSOP-8, Tape
A8T1: HSNT-8(2030), Tape
Operation temperature
A:
Ta =
−40°C
to
+125°C
Detection voltage
20 to 50
(e.g., when the detection voltage is 2.0 V, it is expressed as 20.)
Product type
*2
A, B, D, E, G, H, J, K
*1.
*2.
Refer to the tape drawing.
Refer to "2.
Product type list".
2.
Product type list
Table 1
Constant Current Source Pull-down
for WEN Pin
Available
Available
Unavailable
Unavailable
Available
Available
Unavailable
Unavailable
Output Pull-up
Resistor
Available
Available
Available
Available
Unavailable
Unavailable
Unavailable
Unavailable
Product Type
A
B
D
E
G
H
J
K
WEN Pin Logic
Active "H"
Active "H"
Active "L"
Active "L"
Active "H"
Active "H"
Active "L"
Active "L"
Input Edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
3.
Packages
Table 2
Package Name
TMSOP-8
HSNT-8(2030)
Dimension
FM008-A-P-SD
PP008-A-P-SD
Package Drawing Codes
Tape
FM008-A-C-SD
PP008-A-C-SD
Reel
FM008-A-R-SD
PP008-A-R-SD
Land
−
PP008-A-L-SD
4
AUTOMOTIVE, 125°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.2
_00
S-19405 Series
Pin Configurations
1.
TMSOP-8
Top view
1
2
3
4
8
7
6
5
Table 3
Pin No.
1
2
3
4
5
6
7
8
Symbol
RST
CPOR
CWDT
VSS
WEN
________
WDO
WDI
VDD
_______
Figure 5
Description
Reset output pin
Reset time-out period adjustment pin
Watchdog time adjustment pin
GND pin
Watchdog enable pin
Watchdog output pin
Watchdog input pin
Voltage input pin
2.
HSNT-8(2030)
Table 4
Top view
1
4
8
5
Bottom view
8
5
1
4
*1
Pin No.
1
2
3
4
5
6
7
8
Symbol
RST
CPOR
CWDT
VSS
WEN
________
WDO
WDI
VDD
_______
Description
Reset output pin
Reset time-out period adjustment pin
Watchdog time adjustment pin
GND pin
Watchdog enable pin
Watchdog output pin
Watchdog input pin
Voltage input pin
Figure 6
*1.
Connect the heat sink of backside at shadowed area to the board, and set electric potential GND.
However, do not use it as the function of electrode.
5
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