TB62779FNG,EL

Overview

The TB62779FNG,EL is a linear LED driver IC manufactured by Toshiba Semiconductor and Storage. It features nine independent output channels, each capable of sourcing up to 40mA. The device supports both linear and PWM dimming methods for precise brightness control. It operates within a supply voltage range of 3V to 5.5V and delivers an output voltage of 4V. The component is housed in a 20-SSOP package with a wide operating temperature range from -40°C to 85°C.

Feature Summary

• Integrates nine independent current-controlled output channels for multi-zone LED applications
• Supports dual dimming modes including linear analog adjustment and high-frequency PWM signals
• Incorporates internal switching circuitry to manage load currents efficiently within the specified voltage limits

Applications

• Liquid crystal display backlight systems requiring uniform illumination across multiple zones
• Portable electronic devices utilizing surface-mount LED arrays for status indicators or lighting
• Automotive interior lighting modules where compact form factors and thermal stability are required

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of availability should focus on surplus distributors or secondary market sources rather than direct factory orders. Buyers must confirm the specific revision level and packaging condition when sourcing from non-original suppliers to ensure compatibility with existing designs.

Selection Notes

Engineers should evaluate this part primarily for legacy system maintenance or replacement scenarios due to its discontinued status. Designers requiring new implementations should consider modern equivalents that offer similar channel counts and dimming capabilities but remain in active production. Compatibility checks must verify pin assignments and thermal characteristics against the original design specifications.

Part Context

The TB62779 series belongs to Toshiba's portfolio of linear LED drivers designed for display applications. This specific variant distinguishes itself through its nine-channel configuration and support for combined linear and PWM control schemes. It targets markets demanding reliable current regulation in space-constrained environments typical of consumer electronics and portable displays.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, cross-referencing with other manufacturers requires careful evaluation of electrical parameters and mechanical footprint compatibility.