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Product Detailed Parameters
- Description：WIDE-RANGE PWM DIMMING BOOST CON
- Series：-
- Mfr：Kinetic Technologies
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：39V
- Current - Output / Channel：900mA
- Frequency：900kHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6 Thin, TSOT-23-6
- Supplier Device Package：TSOT-23-6
- Grade：-
- Qualification：-
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Overview
The KTD257MEHD-TR is a DC-DC step-up LED driver IC manufactured by Kinetic Technologies, designed for backlight applications. It features an integrated boost converter with a maximum output voltage of 39V and a current limit of 900mA per channel. The device operates on a single supply voltage ranging from 2.7V to 5.5V and supports PWM dimming control at a switching frequency of 900kHz. Packaged in a TSOT-23-6 surface-mount case, it includes internal protection mechanisms.
Feature Summary
- Integrated high-efficiency boost topology for driving series-connected LEDs
- Supports wide-range PWM dimming for precise brightness control
- Includes internal overvoltage protection up to 39V output
Applications
- LED backlighting systems
- Portable electronic display illumination
- Mobile device screen lighting
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required packaging format. Check for obsolescence notices as this part may be subject to discontinuation. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.
Selection Notes
Select this component when designing circuits requiring a compact solution for driving multiple LEDs in series from a low-voltage source. Consider the 900mA current limit and 39V output ceiling to ensure adequate headroom for the target LED string. Evaluate the TSOT-23-6 package size constraints against available board space and thermal dissipation needs.
Part Context
This part belongs to the KTD257M family of LED drivers from Kinetic Technologies. It shares core architectural similarities with other members like the KTD251CEHD-TR but offers specific performance characteristics tailored for high-current backlighting. The family focuses on integrating power switches and control logic into small packages to reduce external component count.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official Kinetic Technologies resources for potential end-of-life alternatives or functional equivalents.
