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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 30MA 14WSON
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：2.5V ~ 3.9V
- Current - Output / Channel：30mA
- Frequency：750kHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-WFDFN Exposed Pad
- Supplier Device Package：14-WSON (4x3)
- Grade：-
- Qualification：-
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Overview
The LM27952SD/NOPB is a four-channel LED lighting driver IC from Texas Instruments, designed for white LED applications. It utilizes an adaptive 1.5X/1X switched capacitor topology to regulate current. The device operates within a supply voltage range of 3V to 5.5V and delivers up to 30mA per channel. It features direct PWM dimming capabilities and functions at a switching frequency of 750kHz. The component is housed in a compact 14-WSON package with exposed pad and supports an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrates an adaptive switched capacitor charge pump topology for efficient voltage regulation
- Supports direct pulse-width modulation (PWM) dimming control
- Provides four independent regulated output channels for constant current driving
Applications
- White LED backlighting systems
- Portable electronic display illumination
- LED lighting driver circuits requiring compact form factors
Procurement Notes
Verify the specific suffix designation when ordering, as it indicates packaging variations such as reel or cut tape quantities. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected package variant matches the intended PCB layout requirements for the 14-WSON footprint.
Selection Notes
Select this component for designs requiring multi-channel LED regulation within a small surface-mount footprint. The integrated charge pump eliminates the need for external inductors, simplifying board space constraints. Evaluate thermal performance requirements given the exposed pad design and ensure input voltage levels remain within the specified operational limits for stable regulation.
Part Context
This part belongs to the LM27952 series of LED drivers manufactured by Texas Instruments. It serves as a successor or alternative to the discontinued LM27952SD model. The NOPB suffix typically denotes lead-free and RoHS-compliant manufacturing standards compared to earlier non-compliant variants in the same functional family.
Replacement Considerations
The LM27952SD is listed as obsolete with the LM27952SD/NOPB identified as a direct replacement. Verify pinout compatibility and electrical specifications against legacy designs before substitution.
