Fairchild RC4190 Micropower Switching Regulator Datasheet

About this manual

The RC4190 is a monolithic integrated circuit designed as a low-power switch-mode regulator for miniature power supply applications. It functions as a DC-to-DC converter containing an internal oscillator, switch, reference, comparator, and logic, along with a low battery detection circuit. The device is optimized for step-up (boost) configurations where the output voltage is higher than the input voltage.

What's inside

• Features
• Description
• Block Diagram
• Pin Assignments
• Absolute Maximum Ratings
• Operating Conditions
• Electrical Characteristics
• Principles of Operation
• Typical Performance Characteristics

Specifications

Frequently asked questions

What is the maximum output voltage for the RC4190?

The RC4190 supports an output voltage up to 24V.

Is the RC4190 suitable for step-down applications?

No, the RC4190 is best suited for step-up circuits; step-down applications should use the RC4391.

What is the internal reference voltage of the device?

The device contains a bandgap reference with a typical voltage of 1.31V.