NCV891130 Series

1.2 A, 2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive

Catalog

1.2 A, 2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive

Part	Package / Case	Package / Case	Package / Case	Qualification	Synchronous Rectifier	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Min/Fixed)	Frequency - Switching	Current - Output	Grade	Function	Voltage - Input (Max) [Max]	Output Type	Mounting Type	Output Configuration	Topology	Number of Outputs	Voltage - Input (Min) [Min]	Supplier Device Package
ON Semiconductor NCV891130PD50R2G	0.154 in	8-SOIC	3.9 mm	AEC-Q100		150 °C	-40 °C	3.3 V	2 MHz	1.2 A	Automotive	Step-Down	36 V	1.81 mOhm	Surface Mount	Positive	Buck	1	3.7 V	8-SOIC-EP
ON Semiconductor NCV891130PD40R2G	0.154 in	8-SOIC	3.9 mm	AEC-Q100		150 °C	-40 °C	3.3 V	2 MHz	1.2 A	Automotive	Step-Down	36 V	1.81 mOhm	Surface Mount	Positive	Buck	1	3.7 V	8-SOIC-EP

Catalog

1.2 A, 2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive

Key Features

• 30 µA 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 36.5 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

• NCV Prefix for Automotive Requiring Site and Control Changes

• +/-2 % Output Voltage Accuracy

• Withstands Load Dump to 45 V

Description

The NCV891130 is a Dual Mode regulator intended for Automotive, battery-connected applications that must operate with up to a 45V 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