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ABLIC Electronic Components Datasheet

S-19503 Datasheet

WATCHDOG TIMER

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S-19502/19503 Series
www.ablicinc.com
© ABLIC Inc., 2017
AUTOMOTIVE, 125°C OPERATION,
36 V INPUT, 400 mA, BUILT-IN WATCHDOG TIMER CIRCUIT
VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.0_01
The S-19502/19503 Series, developed by using high-withstand voltage CMOS technology, is a low dropout positive
voltage regulator with the watchdog timer and the reset function, which has high-withstand voltage. The monitoring time of
watchdog timer can be adjusted by an external capacitor. Moreover, a voltage detection circuit which monitors the output
voltage is also prepared.
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
Regulator block
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Output current:
Input and output capacitors:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in thermal shutdown circuit:
3.0 V to 5.3 V, selectable in 0.1 V step
4.0 V to 36.0 V
2.0% (Tj = 40°C to 150°C)
120 mV typ. (5.0 V output product, IOUT = 100 mA)
Possible to output 400 mA (VIN = VOUT(S) 1.0 V)*1
A ceramic capacitor of 2.2 F or more can be used.
70 dB typ. (f = 100 Hz)
Limits overcurrent of output transistor.
Detection temperature 170°C typ.
Detector block
Detection voltage:
Detection voltage accuracy:
Hysteresis width:
Release delay time:
Output form:
2.6 V to 5.0 V, selectable in 0.1 V step
100 mV (Tj = 40°C to 150°C)
0.12 V min.
18 ms typ. (CDLY = 47 nF)
Nch open-drain output (Built-in pull-up resistor)
Watchdog timer block
Autonomous watchdog operation function:
Watchdog activation current is adjustable:
Product type is selectable:
Watchdog trigger time is adjustable:
Output form:
The watchdog timer operates due to detection of load current.
1.5 mA typ. (WADJ pin is open)
S-19502 Series
(Product with watchdog enable function)
S-19503 Series
(Product without watchdog enable function)
43 ms typ. (CDLY = 47 nF)
Nch open-drain output (Built-in pull-up resistor)
Overall
Current consumption:
Operation temperature range:
Lead-free (Sn 100%), halogen-free
Withstand 45 V load dump
AEC-Q100 qualified*2
60 A typ. (IOUT = 0 mA, When the watchdog timer is deactivated.)
75 A typ. (IOUT 5 mA, When the watchdog timer is activated.)
Ta = 40°C to 125°C
HSOP-8A package product
*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
*2. TO-252-9S package product is in the process of AEC-Q100.
Contact our sales office for details.
Applications
Constant-voltage power supply for automotive electric component, monitoring of microcotroller
Packages
TO-252-9S
HSOP-8A
1


ABLIC Electronic Components Datasheet

S-19503 Datasheet

WATCHDOG TIMER

No Preview Available !

AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 400 mA, BUILT-IN WATCHDOG TIMER CIRCUIT VOLTAGE REGULATOR WITH RESET FUNCTION
S-19502/19503 Series
Rev.1.0_01
Block Diagrams
1. S-19502 Series (Product with watchdog enable function)
VIN
Thermal Overcurrent protection circuit
shutdown
circuit
Reference
voltage
circuit
VOUT
WI
WEN
WADJ
VSS
Reference
voltage
circuit
WDT
circuit
Voltage
detection
circuit
Figure 1
2. S-19503 Series (Product without watchdog enable function)
VIN
WI
WADJ
VSS
Thermal Overcurrent protection circuit
shutdown
circuit
Reference
voltage
circuit
Reference
voltage
circuit
WDT
circuit
Voltage
detection
circuit
Figure 2
DLY
WO / RO
VOUT
DLY
WO
RO
2


Part Number S-19503
Description WATCHDOG TIMER
Maker ABLIC
Total Page 30 Pages
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