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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 50MA 16TQFN
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tube
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：3
- Voltage - Supply (Min)：4V
- Voltage - Supply (Max)：26.5V
- Voltage - Output：45V
- Current - Output / Channel：50mA
- Frequency：600kHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-TQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The ISL97683IRTZ is a highly integrated 3-channel LED driver from Renesas Electronics, designed for medium-size TFT-LCD backlights. It operates as a boost DC-DC controller with selectable switching frequencies of 600kHz or 1MHz in PWM/PFM modes. The device supports input voltages from 4V to outputs up to 45V, and functions in bootstrap configurations with inputs as low as 3V and outputs up to 26.5V. It features dynamic headroom control, analog and PWM dimming capabilities, and extensive fault protections including string open/short circuit detection, overvoltage, and overtemperature protection.
Feature Summary
- Dynamic headroom control monitors the highest LED forward voltage string to minimize output regulation requirements.
- Adaptive boost switching architecture enables direct PWM dimming with high linearity performance.
- Optional channel phase shift control minimizes input/output ripple and reduces video/audio noise interference.
Applications
- Medium-size TFT-LCD backlighting systems
- Portable electronic devices requiring efficient LED driving
- Display modules needing reduced electromagnetic interference
Procurement Notes
Verify component status as the ISL97683 series may be subject to end-of-life notices. Confirm package availability in the specified 16-pin TQFN format. Ensure design-in compatibility with existing boost converter topologies and control interfaces before finalizing procurement plans.
Selection Notes
Select this model for applications requiring three independent LED channels with precise current regulation. Consider the 600kHz or 1MHz frequency options based on external component size constraints and EMI requirements. Verify that the operating temperature range meets system environmental specifications.
Part Context
This component belongs to the ISL9768x series of LED drivers, which includes variants like the ISL97682 (2-channel) and ISL97684 (4-channel). These parts share similar architectural features such as adaptive boost switching and dynamic headroom control, tailored for different channel counts in LCD backlight applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for lifecycle updates or alternative recommendations if this specific variant is discontinued.
