R1280D002B-TR-FE

Overview

The R1280D002B-TR-FE is a CMOS-based, two-channel PWM Step-Up/Inverting DC/DC controller manufactured by Nisshinbo Micro Devices. It operates within an input voltage range of 2.5 V to 5.5 V and features a switching frequency of 700 kHz. The device delivers an output current of 20 mA with a typical operating supply current of 1.4 mA. Designed for SMD/SMT installation, it utilizes a 10-SON package. The component supports Boost and Inverting topologies and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel PWM control architecture supporting simultaneous step-up and inverting operations
• Integrated high-frequency switching capability at 700 kHz for compact passive component sizing
• CMOS-based design ensuring low quiescent current consumption during operation

Applications

• Boost regulator circuits requiring positive output voltage generation
• Inverting power supply designs for negative rail creation
• Portable electronic devices utilizing single-cell battery inputs
• Embedded systems needing dual polarity power rails from a single source

Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Availability is restricted to stock or surplus markets rather than direct production channels. Verify authenticity through authorized distributors and request original datasheets to confirm pinout and electrical specifications before integration into new designs.

Selection Notes

Select this controller when designing systems requiring both positive boost and negative inverting outputs from a single input source. Ensure the application demands a 700 kHz switching frequency and fits within the 2.5 V to 5.5 V input window. Consider the 10-SON package constraints and verify thermal management requirements for the specified operating temperature range.

Part Context

Part of the R1280D series, which focuses on multi-output DC/DC controllers. This specific model variant distinguishes itself by combining boost and inverting functionalities in a single IC, reducing bill-of-materials count compared to using separate regulators for positive and negative rails.

Replacement Considerations

R1280D002A-TR-FE is a documented substitute within the same product family offering similar PWM step-up/inverting capabilities.