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Product Detailed Parameters
- Description：IC LED DRVR RGLTR 350MA SOT23-6
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.5V
- Voltage - Supply (Max)：10V
- Voltage - Output：36V
- Current - Output / Channel：650mA
- Frequency：1.3MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Grade：-
- Qualification：-
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Overview
The LM1938SF6 is a step-up DC/DC converter designed for driving white LEDs with constant current. It operates within an input voltage range of 2.5V to 10V and provides an output current of 0.65A. The device supports PWM dimming and can drive up to 27 LEDs in series, with an output voltage capability of 36V. It utilizes a switching frequency of 1.3MHz and is housed in a SOT-23-6 surface-mount package.
Feature Summary
- Step-up DC/DC converter architecture optimized for white LED constant current regulation
- Supports PWM dimming control for brightness adjustment
- Capable of driving multiple LEDs in series configurations
Applications
- White LED backlighting systems
- Portable electronic device illumination
- General lighting applications requiring constant current drive
Procurement Notes
Verify the specific manufacturer designation, as sources list both TAEJIN Technology and HTC Korea. Confirm the package type is SOT-23-6 and the output current rating matches the 0.65A specification. Ensure compatibility with the required input voltage range of 2.5V to 10V for your application design.
Selection Notes
Select this component when a compact solution for driving high-voltage LED strings from low-voltage sources is required. The 1.3MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Ensure the thermal management capabilities of the SOT-23-6 package suit the expected power dissipation in the target environment.
Part Context
TAEJIN Technology specializes in power management ICs, including linear regulators and switching converters. The company holds ISO 9001 certification and has been designated as a Korea Venture Company. This part falls under their PMIC portfolio, focusing on efficient LED driver solutions.
Replacement Considerations
Check for direct substitutes from TAEJIN or other manufacturers offering similar boost LED drivers in SOT-23-6 packages. Verify that any replacement maintains the 0.65A output current and 1.3MHz switching frequency to ensure circuit compatibility without redesign.
