TPS61061YZFR

Overview

The TPS61061YZFR is a constant current LED driver IC from Texas Instruments, designed for white LED power supplies. It features a boost converter topology with a fixed switching frequency of 1 MHz. The device supports an input voltage range of 2.7 V to 6 V and delivers a regulated output current of 400 mA. It provides a maximum output voltage of 19 V. The component is housed in an 8-DSBGA package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated boost converter topology for efficient step-up voltage regulation
• Supports both digital and PWM brightness control mechanisms
• Fixed 1 MHz switching frequency enables compact external component sizing

Applications

• White LED power supplies
• Portable electronic device backlighting
• General LED lighting applications requiring constant current drive

Procurement Notes

Verify the specific suffix 'YZFR' against the manufacturer's latest datasheet to confirm availability status, as some listings indicate this variant may be obsolete or have limited lifecycle support. Ensure the ordering part number matches the required tape and reel configuration for surface-mount assembly processes. Cross-reference the DSBGA-8 package dimensions with your PCB footprint library to guarantee mechanical compatibility during procurement and integration.

Selection Notes

Select this component when a compact solution is required for driving white LEDs from a single-cell lithium-ion battery or similar low-voltage source. The 1 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 400 mA output limit and 19 V maximum voltage constraints to ensure the target LED string configuration remains within the device's electrical boundaries without exceeding thermal or current ratings.

Part Context

This part belongs to the TPS6106x series of LED drivers from Texas Instruments. It shares architectural similarities with the TPS61060 but offers higher output voltage capabilities. The series is characterized by its small DSBGA packaging and integrated power switch, targeting space-constrained portable electronics where efficiency and minimal board area are critical design priorities.

Replacement Considerations

The TPS61060YZFR is a related variant within the same family, offering similar functionality with a lower maximum output voltage of 15 V. Verify if the application requires the higher 19 V headroom provided by the TPS61061 before substituting. Check current lifecycle status for both parts to ensure supply chain continuity.