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Product Detailed Parameters
- Description：IC LED DRV RGLTR I2C 30MA 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：9
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：2V ~ 4V
- Current - Output / Channel：30mA
- Frequency：1.27MHz
- 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 LM27965SQX is a discontinued dual display white LED driver IC manufactured by Texas Instruments. It integrates a switched capacitor (charge pump) topology with I2C-compatible brightness control for precise regulation. The device features nine output channels, each capable of delivering up to 30mA. It operates within a supply voltage range of 2.7V to 5.5V and supports an output voltage range of 2V to 4V. The internal switching frequency is fixed at 1.27MHz. Designed for surface mount installation, it is housed in a compact 24-WQFN package with dimensions of 4x4mm. The component is rated for an ambient operating temperature range from -30°C to +85°C.
Feature Summary
- Integrates dual display white LED driver functionality with I2C compatible brightness control interface
- Utilizes switched capacitor charge pump topology for efficient DC-DC regulation
- Provides nine independent output channels with integrated internal switches
Applications
- Backlight systems for electronic displays
- General LED lighting applications
Procurement Notes
Verify the obsolete status of this specific part number before design finalization. Confirm if the RoHS-compliant variant LM27965SQX/NOPB meets environmental requirements. Check current distributor availability as stock levels may be limited or non-existent. Ensure the 24-WQFN footprint matches the target PCB layout constraints.
Selection Notes
Select this component only if legacy compatibility is required due to its discontinued status. Consider the LM27965SQX/NOPB as a direct substitute if RoHS compliance is mandatory. Evaluate the 30mA per channel limit against total load requirements. Verify that the 1.27MHz switching frequency aligns with EMI constraints in the application environment.
Part Context
This IC belongs to the LM27965 series of LED lighting drivers. It is specifically designed for driving white LEDs in display backlighting scenarios. The family includes variants with different packaging options and environmental compliance statuses. The SQX designation indicates a specific tape-and-reel packaging configuration for automated assembly.
Replacement Considerations
The LM27965SQX/NOPB is listed as a direct replacement. Verify pinout and electrical parameter equivalence. Note that the NOPB suffix typically denotes lead-free/RoHS compliance compared to the original SQX version.
