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Product Detailed Parameters
- Description：IC LED DRV RGLTR I2C 24WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- Number of Outputs：7
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：2V ~ 4V
- Current - Output / Channel：30mA, 80mA
- Frequency：700kHz
- Dimming：I2C
- Applications：Backlight
- Operating Temperature：-30°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-WQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The LM27964SQ-A is a charge-pump-based white LED driver system designed for mobile phone displays. It features seven output channels with an input voltage range of 2.7 V to 5.5 V and operates at a frequency of 700 kHz. The device provides constant current outputs of 30 mA and 80 mA per channel, supporting two distinct groups for backlighting applications. It utilizes I2C-compatible control for brightness adjustment and is housed in a 24-WQFN (4x4) package.
Feature Summary
- Integrates a charge-pump topology for efficient white LED driving
- Supports I2C compatible digital control for brightness dimming
- Provides dual current sink groups for flexible backlight configurations
Applications
- Mobile phone display backlighting
- White LED driver systems
- Portable electronic device illumination
Procurement Notes
Verify component status as the LM27964SQ-A is listed as obsolete by Texas Instruments. Confirm availability through authorized distributors or check for direct replacement options such as the LM27964SQ-A/NOPB. Ensure that the specific ordering suffix matches project requirements and validate datasheet revisions before finalizing procurement plans.
Selection Notes
Select this component for applications requiring integrated charge-pump LED driving with digital control capabilities. Consider the seven-channel output structure and dual current group flexibility when designing backlight circuits. Evaluate the 24-WQFN package constraints and thermal performance relative to the target enclosure design and operating temperature range specifications.
Part Context
This part belongs to the LM27964 series of LED lighting drivers from Texas Instruments. The series focuses on providing efficient power management solutions for portable devices. The SQ-A variant specifically denotes the package type and temperature grade within the broader product family, sharing core functional characteristics with other members like the LM27964SQ-I.
Replacement Considerations
The LM27964SQ-A/NOPB is identified as a direct substitute for the LM27964SQ-A. Verify pin compatibility and electrical parameters when transitioning between these variants to ensure seamless integration into existing designs without hardware modifications.
