Automotive, 125℃ operation, 36V input, 250mA,
Built-in Window Watchdog Timer Linear Regulator with Reset Function
Automotive ECU Requirements
- Reduce standby current
for all parts and the entire ECU
- Detect MCU faults with high accuracy
to ensure device safety
- Simplify peripheral circuits
to reduce footprint
A single chip that powers and monitors voltage and operation of an MCU.
[the industry’s No. 1*] lowest current consumption with fast transient response
Not only MCU power consumption, but power supply IC power consumption is indispensable to efforts aiming to reduce ECU standby current.
The S-19514/5 and S-19518 Series have the industry’s lowest self current consumption of 3.0μA typ. without a trade-off in transient response.
By using the enable pin* to set the entire IC to standby state, it is possible to control the supply of power to the MCU and also reduce standby current. *The S-19518 Series only
High-accuracy detection of MCU faults
Automotive devices need to be safe and require WDTs capable of reliably detecting MCU faults.
Equipped with window mode
This mode is able to detect not only long-period absence of input signals from an MCU but also short-period repeated signal input (double pulse) as faults.
Equipped with autonomous watchdog operation function
The watchdog function is automatically turned on and off depending on load current.
This prevents the WDT from diagnosing lack of signal input from an MCU in sleep mode as a fault.
Single chip with 3 functions saves space
Incorporating the LDO regulator, reset and WDT functions into one chip reduces the number of components and saves space.
The both compact and high-heat dissipating TO-252-9S package resolves the heat problem arising from the dense assembly of components in a small footprint.
In a 6.5mm square size package and with an allowable power dissipation of 5.21W, it excels at the pin compatibility that ABLIC is known for.
We also offer a lineup of compact HSOP-8A packages (6.0 x 5.02 x t1.68mm).
A simple circuit configuration that saves space and reduces the total number of components.
Automotive Watchdog timer Lineup
|Output voltage||3.3V , 5.0V||3.3V , 5.0V||3.3V , 5.0V|
|±2.0% (Tj = −40°C to +150°C)||±2.0% (Tj = −40°C to +150°C)||±2.0% (Tj = −40°C to +150°C)|
|3.0 µA typ.||3.2 µA typ.||3.0 µA typ.|
|Watchdog mode||Window mode||Window mode||Time-out mode|
|Automotive quality||PPAP capable, AEC-Q100 qualified|