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Product Detailed Parameters
- Description：LED DRVR with I2C 12ch
- Series：-
- Mfr：ETEK MICROELECTRONICS
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：12
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：5.5V
- Current - Output / Channel：24mA, 48mA
- Frequency：-
- Dimming：I2C, PWM
- Applications：Camera Flash
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (3x3)
- Grade：-
- Qualification：-
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Overview
The ET6312B is a 12-channel output current sink device designed for high-efficiency constant current regulation with an ultralow internal voltage drop. It supports a wide input voltage range of 2.5V to 5.5V, enabling direct interfacing with 5V logic and power rails without requiring level shifting. The component features I2C and PWM dimming capabilities, offering precise control over output currents of 24mA and 48mA. Packaged in a 20-WFQFN Exposed Pad (QFN-20_3x3mm) surface mount format, it operates within a temperature range of -40°C to 85°C.
Feature Summary
- Provides 12-channel constant current regulation with high efficiency and low voltage drop
- Supports I2C and PWM dimming interfaces for precise light control
- Includes internal current limiting and thermal shutdown protection mechanisms
Applications
- Camera Flash systems
- LED Driver IC applications
- Mobile phone lighting circuits
Procurement Notes
Verify the specific package variant, such as QFN-20_3x3mm HWDG ROHS, against project requirements. Confirm that load conditions do not exceed absolute maximum ratings, particularly regarding sudden discharge of large capacitive loads like 100µF or higher which may induce voltage spikes. Ensure compatibility with the specified operating temperature range and supply voltage levels before finalizing procurement.
Selection Notes
Select this component when a multi-channel linear constant current driver is required for compact mobile designs. The wide 2.5V to 5.5V input range allows flexibility in power rail selection. Consider the exposed pad package for thermal management needs. Verify that the 24mA and 48mA output options meet the specific LED current requirements of the target application.
Part Context
Manufactured by Wuxi ETEK Microelectronics, the ET6312B belongs to their portfolio of high-performance analog integrated circuits. Established in 2002, the company focuses on developing specialized ICs for consumer electronics. This part is specifically categorized under LED drivers, targeting applications requiring precise current control in space-constrained environments.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Users should consult official manufacturer channels for potential cross-reference alternatives if this specific model is unavailable.
FAQ
What is the input voltage range for the ET6312B?
The ET6312B supports a wide input voltage range from 2.5V to 5.5V.
Does the ET6312B include protection features?
Yes, the device includes internal current limiting and thermal shutdown protection.
