Phoenix, Ariz. – It's like a twist on Elizabeth Barrett Browning's famous sonnet, asking "how do I love you, let me count the ways?", except here it is "how many localized DC rails are in that car, let me count the ways?" Today's cars are a jungle of electronics, with many low-voltage, low-current needs tucked into every nook, cranny, and subsystem of the car.
To address these needs, ON Semiconductor has announced the five very-low-dropout and ultra-low-dropout (LDO) linear voltage regulators, to address a wide range of automotive applications such as rear camera modules, instrument clusters, and body and chassis applications.
These new devices deliver 5V at 150 milliamperes (mA), in space-saving packages that meet the latest requirements from car manufacturers for very low quiescent currents (Iq) when the ignition is switched off. The quintet includes:
- NCV8667 – Very Low Iq Regulator with Enable, Reset and Early Warning
- NCV8668 – Very Low Iq Regulator with Window Watchdog, Enable and Reset
- NCV8669 – Very Low Iq Regulator with Reset, Delay and Early Warning
- NCV8768 – Ultra Low Iq Regulator with Reset, Delay and Early Warning
- NCV8769 - Ultra Low Iq Regulator with Reset and Early Warning
The ultra-low Iq NCV8768 and NCV8769 regulators feature typical quiescent currents of 31 microamperes (µA) and 25 µA respectively, making them suitable for applications permanently connected to the battery. The NCV8768 features an Enable function that further decreases the quiescent current to 1 µA, and reverse output current protection. Both devices include current limit and thermal shutdown features.
The very-low Iq NCV8668 features quiescent current of 38 µA, and an integrated window watchdog (dual sided detection) that allows the detection of microprocessor malfunctions – an important requirement for automotive modules that have an impact on safety. The device features quiescent current of 38 µA, delivers extremely stable performance, and requires a minimal number of external components to reduce overall solution costs and save board space. Other features of the NCV8668 include reset, a programmable delay time, and an enable function.
The very low Iq NCV8667 and NCV8669 are identical, except the NCV8667 includes an Enable pin. With a user adjustable early warning threshold option, the Iq of the devices is lowered to 28 µA typical. The devices provide replacements for ON Semiconductor’s NCV4269(A) in applications where very low quiescent current is a requirement; both specify a quiescent current of just 42 µA typical. With built-in reset, delay and early warning functions, the NCV8667 and NCV8669 are well suited for a range of voltage monitoring tasks.
Packaging and pricing: All five parts are AEC Q100 qualified and Production Part Approval Process (PPAP) capable.
•NCV8768 and NCV8769 are offered in Pb-free, RoHS-compliant SOIC-14 packages; they are priced between $1.16 - $1.32 per unit in 2,500 unit quantities.
•NCV8667, NCV8668, and NCV8669 are offered in Pb-free, RoHS-compliant SOIC-8 and SOIC-14 packages; they are priced between $0.82 - $1.20 per unit in 2,500 unit quantities.
For more information, use the links above or go to http://www.onsemi.com.