LT1247CS8#TRPBF

Overview

The LT1247CS8#TRPBF is an 8-pin, fixed-frequency, current mode pulse width modulator designed for offline and DC/DC converter applications. It operates at a switching frequency of 1 MHz with a maximum duty cycle of 100%. The device supports a Buck topology and features non-isolated output configuration. It functions within a supply voltage range of 7.6 V to 25 V, consuming a typical operating supply current of 13 mA. The component is rated for operation between 0°C and +100°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Implements current mode control architecture for stable PWM regulation
• Supports continuous conduction mode with up to 100% duty cycle capability
• Designed for high-frequency switching applications at 1 MHz

Applications

• Offline power supply designs
• DC/DC converter circuits
• Buck topology power management systems

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the manufacturer is Analog Devices Inc., formerly Linear Technology. Ensure the part number matches the exact pinout and electrical specifications required for the target circuit design before procurement.

Selection Notes

Select this component for applications requiring a fixed-frequency current mode controller. Consider the 1 MHz switching frequency for size reduction compared to lower frequency alternatives. Verify that the input voltage range of 7.6 V to 25 V aligns with the system's power rail requirements.

Part Context

The LT1247 is part of the LT1246/LT1247 family of fixed-frequency current mode PWM controllers. These devices are engineered as improved plug-compatible versions of earlier industry-standard controllers, offering enhanced performance characteristics while maintaining similar functional interfaces for legacy design upgrades.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.