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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 25MA 24VQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：8
- Voltage - Supply (Min)：4.2V
- Voltage - Supply (Max)：24V
- Voltage - Output：38V
- Current - Output / Channel：25mA
- Frequency：600kHz ~ 2MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-VQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The TPS61185RGER is a high-efficiency, step-up DC-DC converter designed for driving white LEDs or powering small displays. It features an integrated boost topology with a maximum output voltage of 38 V and supports up to eight independent LED channels. The device operates within an input supply range of 4.2 V to 24 V and utilizes a switching frequency between 600 kHz and 2 MHz. Each channel provides a regulated output current of 25 mA. The component is housed in a 24-VQFN (4x4) package and functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a high-efficiency boost converter with internal power MOSFETs for compact design.
- Provides eight independent constant-current channels for precise white LED control.
- Supports PWM dimming for flexible brightness adjustment and display applications.
Applications
- White LED backlighting for notebook computers
- Small display panel illumination
- Portable electronic device lighting systems
Procurement Notes
Verify the specific suffix 'RGER' corresponds to the tape-and-reel packaging configuration when sourcing. Confirm that the 24-VQFN footprint matches the target PCB layout. Ensure the application input voltage remains within the specified 4.2 V to 24 V operational limits to maintain proper regulation and efficiency performance.
Selection Notes
Select this component for designs requiring multiple independent LED channels from a single boost regulator. It is suitable for space-constrained portable devices where high efficiency and low quiescent current are critical. Consider the thermal dissipation capabilities of the exposed pad VQFN package for high-density layouts.
Part Context
This part belongs to the Texas Instruments TPS61185 series of LED lighting driver ICs. The series focuses on high-performance solutions for mobile and notebook applications. The RGER variant specifically denotes the reel packaging option, distinguishing it from cut-tape or other distribution formats within the same electrical specification family.
Replacement Considerations
The TPS61185RGET is a confirmed substitute offering identical electrical characteristics but in a cut-tape package format. Verify that the physical package dimensions and pinout remain compatible with the existing board design before substitution.
