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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM TSOT23-6
- Series：-
- Mfr：Lumissil Microsystems
- 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：-
- Current - Output / Channel：2.2A (Switch)
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- 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 IS31BL3506A-TTLS2-TR is an LED lighting driver IC manufactured by Lumissil Microsystems. It functions as a 35V step-up converter with an integrated MOSFET switch, designed for driving series strings of LEDs. The device operates within a supply voltage range of 2.2V to 5.5V and supports analog and PWM dimming methods. It features a switching frequency of 1MHz and delivers a maximum output current of 20mA. The component is housed in a TSOT-23-6 package and is rated for operation between -40°C and +85°C.
Feature Summary
- Integrates a boost converter topology with an internal MOSFET switch for efficient LED string driving.
- Supports both analog and pulse-width modulation (PWM) dimming control methods.
Applications
- LED lighting driver circuits
- Series LED string applications
Procurement Notes
Verify the specific suffix 'TTLS2' against the manufacturer's official documentation to confirm pinout and thermal characteristics. Confirm that the component status aligns with project requirements, as availability may vary. Ensure compatibility with the intended PCB footprint and soldering profile for the TSOT-23-6 package.
Selection Notes
Select this component when a compact solution for low-current LED strings is required. The integrated MOSFET reduces external component count compared to discrete boost designs. Consider the 1MHz switching frequency for EMI management and the support for PWM dimming if precise brightness control is necessary for the application.
Part Context
This part belongs to the IS31BL3506 series of LED drivers from Lumissil Microsystems. It shares functional similarities with other variants like the IS31BL3506B but differs in packaging and specific electrical ratings. The series is characterized by its ability to drive multiple LEDs in series from a single-cell or dual-cell power source.
Replacement Considerations
The IS31BL3506A-DLS2-TR is a documented substitute variant within the same family, offering similar functionality but in a DFN-EP-8 package. Verify pin-to-pin compatibility and thermal performance before substitution.
