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Product Detailed Parameters
- Description：IC LED DRVR RGLTR ANALOG 10WSON
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：-
- Number of Outputs：2
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.8V
- Voltage - Output：-
- Current - Output / Channel：36mA
- Frequency：650kHz
- Dimming：Analog
- Applications：Backlight
- Operating Temperature：-30°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-WSON (3x3)
- Grade：-
- Qualification：-
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Overview
The LM2791LD-L is a dual-output LED driver IC from Texas Instruments, designed for backlight applications. It utilizes a switched capacitor (charge pump) topology to regulate current. The device operates within a supply voltage range of 3V to 5.8V and delivers an output current of 36mA per channel. It features analog dimming control and functions at a switching frequency of 650kHz. The component is housed in a compact 10-WSON (3x3) package with an exposed pad, suitable for surface mount installation. It supports an operating temperature range of -30°C to 85°C.
Feature Summary
- Dual-channel current regulation using switched capacitor topology
- Analog brightness control capability
- Compact 10-WSON surface-mount packaging
Applications
- Backlight illumination systems
Procurement Notes
Verify the specific suffix 'L' against the datasheet requirements, as it may indicate non-RoHS compliance or specific manufacturing lot characteristics compared to the 'NOPB' variant. Confirm availability status, as this part number may be discontinued or have limited stock. Ensure the procurement source provides valid traceability documentation for the component's origin and handling history.
Selection Notes
Select this component when a dual-output charge pump solution is required for low-voltage LED backlighting. The 36mA output current suits small LED arrays. Consider the 10-WSON footprint for space-constrained designs. Verify that analog dimming meets system control requirements rather than PWM. Check thermal performance within the specified ambient temperature range.
Part Context
This part belongs to the LM2791 family of LED drivers. It is distinct from the LM2791LD-L/NOPB variant, which typically denotes RoHS-compliant manufacturing. The 'L' suffix often indicates specific material or environmental compliance differences. It serves as a direct replacement for legacy National Semiconductor parts in dual-channel LED driving roles.
Replacement Considerations
The LM2791LD-L/NOPB is a confirmed substitute part number offering identical electrical specifications but with RoHS compliance. Verify pinout compatibility and ensure the application does not require specific lead-free soldering profiles mandated by the NOPB variant.
