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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 30MA 20QFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：24V
- Voltage - Output：38V
- Current - Output / Channel：30mA
- Frequency：1MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The TPS61187RTJR is a white-LED driver IC designed for notebook applications, featuring a boost topology with six output channels. It integrates a 2-A, 40-V MOSFET and supports a supply voltage range of 4.5 V to 24 V. The device delivers a maximum output voltage of 38 V and operates at a programmable switching frequency between 300 kHz and 1 MHz. Packaged in a 20-pin QFN, it functions within an ambient temperature range of -40°C to +85°C.
Feature Summary
- Integrates a high-current 2-A, 40-V power MOSFET for efficient step-up conversion.
- Supports PWM dimming interface with adaptive boost output control for WLED strings.
- Features auto phase shift capability to minimize input ripple current.
Applications
- White LED backlight drivers for notebook computers
- Portable electronic display illumination systems
Procurement Notes
Verify the specific suffix (RTJR) corresponds to the required tape-and-reel packaging configuration. Confirm that the 20-pin QFN footprint matches the target PCB layout. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Validate that the input voltage source stays within the 4.5 V to 24 V limits to prevent device damage.
Selection Notes
Select this component when designing notebook displays requiring integrated high-current boost regulation. The built-in MOSFET simplifies thermal management compared to external solutions. The programmable frequency allows optimization for efficiency or size constraints. Ensure the design accommodates the 38 V maximum output voltage capability for series LED configurations.
Part Context
This part belongs to the TPS61187 family of LED lighting drivers from Texas Instruments. It is specifically engineered for portable computing devices, offering a compact solution for driving multiple white LED strings. The device combines power stage and control logic in a single package to reduce board space.
Replacement Considerations
The TPS61180RTER is a related variant within the same product family, though it features different electrical characteristics and a WQFN-16 package. Verify pin compatibility and performance specifications before substitution.
