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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 2.2A 8DFN
- 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：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The IS31BL3506A-DLS2-TR is a single-output LED lighting driver IC from Lumissil Microsystems, designed for backlight applications. It integrates a boost DC-DC regulator with an internal MOSFET switch capable of delivering up to 2.2A. The device operates on a supply voltage range of 2.7V to 5.5V and supports both analog and PWM dimming functions. It features a fixed switching frequency of 1MHz and is housed in an 8-DFN (2x2) package. The component is rated for an operating temperature range of -40°C to +85°C.
Feature Summary
- Integrates a step-up (boost) DC-DC converter topology with an internal power switch for efficient LED driving.
- Supports dual dimming control methods including analog voltage input and pulse-width modulation signals.
- Designed specifically for high-efficiency backlight illumination requirements in compact form factors.
Applications
- LCD backlight drivers
- Portable electronic display illumination
- General LED lighting circuits
Procurement Notes
Verify the specific suffix DLS2 against the manufacturer's current datasheet to confirm pinout and thermal pad configuration. Confirm RoHS compliance status and moisture sensitivity level prior to PCB assembly planning. Ensure the design accounts for the 1MHz switching frequency regarding electromagnetic interference filtering requirements.
Selection Notes
Select this component when a single-channel boost driver is required for low-voltage LED strings. The integrated MOSFET simplifies bill of materials by eliminating external power switches. Consider the 2.2A peak current capability for driving multiple LEDs in series. Verify that the input voltage range aligns with the system's battery or power rail specifications.
Part Context
This part belongs to the IS31BL3506 series of LED drivers from Lumissil Microsystems. It is functionally similar to the IS31BL3506B variant but may differ in specific electrical characteristics or packaging options. The series is targeted at portable devices requiring efficient backlight management.
Replacement Considerations
Check for direct substitutes within the IS31BL3506 family such as the IS31BL3506B-DLS2-TR. Verify compatibility with existing PCB footprints and control signal interfaces before substitution.
FAQ
What dimming methods are supported?
The IS31BL3506A-DLS2-TR supports both analog dimming and pulse-width modulation (PWM) dimming.
What is the maximum switch current?
The internal MOSFET switch can handle a peak current of up to 2.2A.
