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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 50MA 8TDFN
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：SEPIC, Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.4V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：50mA
- Frequency：1.45MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-TDFN (2x3)
- Grade：-
- Qualification：-
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Overview
The ISL97634IRT18Z-TK is a highly integrated PWM boost LED driver designed for LCD panel backlighting. It operates within an input voltage range of 8V to 15V and supports up to 50mA output current. The device features a 18V internal switch rating, enabling efficient driving of white LEDs in small form factor displays. It utilizes a SEPIC or Boost topology for power regulation. The component functions reliably across a temperature range of -40°C to +85°C and consumes a maximum supply current of 1.5 mA.
Feature Summary
- Integrates PWM dimming capability for precise brightness control
- Utilizes high-efficiency boost topology suitable for compact designs
- Supports regulated current output for consistent LED performance
Applications
- Backlighting for small size LCD panels
- White LED driver circuits in portable devices
- LCD television and monitor display modules
Procurement Notes
Verify the specific suffix 'TK' indicates tape and reel packaging configuration as documented by Renesas. Confirm the part status is obsolete before finalizing design-in decisions. Ensure compatibility with existing PCB footprints for the 8-WFDFN exposed pad package. Cross-reference datasheet revisions to confirm pinout consistency with previous production runs.
Selection Notes
Select this component when designing for small LCD panels requiring integrated PWM dimming and boost regulation. The 18V switch rating accommodates typical white LED string configurations without external high-voltage components. Consider the 8-pin TDFN package for space-constrained applications. Evaluate thermal dissipation requirements given the surface-mount installation type and operating temperature limits.
Part Context
This part belongs to the ISL97634 series of LED drivers from Renesas Electronics. It is specifically engineered for white LED backlighting applications. The series offers various voltage ratings and packaging options to suit different display sizes. The ISL97634IRT18Z-TK variant specifically targets the 18V switch rating requirement for standard LCD backlight solutions.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. As the part status is listed as obsolete, alternative sourcing requires consulting official Renesas obsolescence notices or authorized distributor cross-reference lists for direct replacements.
