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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 LM27964SQX-C/NOPB is a white LED driver system from Texas Instruments designed for mobile phone displays. It utilizes a charge-pump topology to regulate current across seven output channels, with each channel capable of delivering up to 30 mA. The device operates within an input voltage range of 2.7 V to 5.5 V and supports I2C-compatible brightness control. It functions at a switching frequency of 700 kHz and is housed in a 24-WQFN package. The component supports surface mount installation and operates between -30°C and +85°C.
Feature Summary
- Integrates a charge-pump-based architecture for efficient white LED driving
- Provides independent current regulation for seven distinct output channels
- Enables digital brightness adjustment through I2C compatible interface control
Applications
- Mobile phone display backlighting systems
- Portable electronic device illumination
- Compact LED lighting modules requiring multi-channel drive
Procurement Notes
Verify the specific suffix designation against official Texas Instruments documentation to confirm exact electrical characteristics and pinout compatibility. Ensure that the ordering information aligns with the required package variant and temperature rating. Cross-reference the part number with current manufacturer status to determine availability and lifecycle stage before finalizing procurement plans.
Selection Notes
Select this component when designing circuits requiring multiple white LEDs driven by a single integrated solution. The I2C interface allows for flexible brightness management without additional GPIO usage. Consider the charge-pump topology requirements regarding external capacitor sizing and layout constraints to ensure stable operation within the specified voltage and current parameters.
Part Context
This part belongs to the LM27964 series of LED drivers, which are optimized for portable applications. The series offers various output configurations and control interfaces tailored for display backlighting. The SQX-C/NOPB variant specifically denotes the tape-and-reel packaging format and compliance with lead-free standards, distinguishing it from other package or suffix combinations within the same functional family.
Replacement Considerations
Direct substitutes include the LM27964SQ-A/NOPB and LM27964SQX-A/NOPB. These alternatives share similar functional specifications and package types. Verify pin-to-pin compatibility and electrical parameter alignment before swapping components in existing designs.
