NCV891130

NCV891130 Step-Down Regulator Automotive, Low-Iq, Dual-Mode 1.2 A, 2 MHz The NCV891130 is a Dual Mode regulator intended for Automotive, battery−connected applications that must operate with up to a 45 V input supply. Depending on the output load, it operates either as a PWM Buck Converter or as a Low Drop−Out Linear Regulator, and is suitable for systems with low noise and Low Quiescent Current requirements often encountered in automotive driver information systems. A reset pin (with fixed delay) simplifies interfacing with a microcontroller. The NCV891130 also provides several protection features expected in automotive power supply systems such as current limit, short circuit protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and an all−ceramic output filter capacitor – forming a space−efficient switching regulator solution. Features 30 mA Iq in Light Load Condition 1.2 A Maximum Output Current in PWM Mode Internal N−channel Power Switch VIN Operating Range 3.7 V to 36 V Withstands Load Dump to 45 V Logic Level Enable Pin can be Tied to Battery Fixed Output Voltage of 5.0 V, 4.0 V or 3.3 V 2 MHz Free−running Switching Frequency ±2 % Output Voltage Accuracy NCV Prefix for Automotive Requiring Site and Control Changes These Devices are Pb−Free and are RoHS Compliant Typical Applications Audio Infotainment Instrumentation Safety−Vision Systems VIN C...