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AL3644CH12-7
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Product Detailed Parameters
- Description：IC LED DRVR RGLTR I2C U-WLB1713
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：2
- Voltage - Supply (Min)：2.5V
- Voltage - Supply (Max)：5V
- Voltage - Output：-
- Current - Output / Channel：1.5A (Flash)
- Frequency：4MHz
- Dimming：I2C, PWM
- Applications：Camera Flash
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：12-UFBGA, WLBGA
- Supplier Device Package：U-WLB1713-12
- Grade：-
- Qualification：-
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Overview
The AL3644CH12-7 is a dual-channel LED driver IC designed for camera flash and handheld backlight applications. It utilizes a boost topology with an operating frequency of 4 MHz. The device supports I2C and PWM dimming interfaces, offering adjustable output voltage and up to 1.5 A output current per channel. It operates within a supply voltage range of 2.5 V to 5 V and functions between -40°C and +85°C. The component is housed in a U-WLB1713-12 package.
Feature Summary
- Dual-channel architecture providing independent control for camera flash and backlight functions
- Integrated boost converter topology enabling efficient power management for LED loads
- Supports digital I2C and analog PWM dimming methods for precise brightness adjustment
Applications
- Camera flash LED drivers in mobile devices
- Handheld device backlight illumination systems
- Portable electronics requiring compact LED power regulation
Procurement Notes
Verify the specific suffix 'CH12' against official Diodes Incorporated documentation to confirm pinout and thermal characteristics. Ensure the U-WLB1713-12 package dimensions match your PCB footprint requirements. Cross-reference the datasheet revision date to validate electrical parameters before finalizing design integration.
Selection Notes
Select this component when designing systems requiring dual independent LED channels from a single boost regulator. It is suitable for space-constrained portable devices needing I2C controllability. Consider the 4 MHz switching frequency for EMI management and inductor size optimization relative to alternative lower-frequency drivers.
Part Context
This part belongs to Diodes Incorporated's portfolio of LED lighting driver ICs. It is specifically engineered for consumer electronics, addressing the demand for high-efficiency, small-footprint solutions for display backlights and photographic flash units in smartphones and tablets.
Replacement Considerations
Consult official manufacturer substitution guides for verified equivalents. Generic cross-references may differ in pin configuration or thermal performance; verify compatibility through official component databases.
