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Product Detailed Parameters
- Description：IC LED DRVR RGLTR SGL WR 16TQFN
- Series：-
- Mfr：onsemi
- Package：Bulk
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：No
- Number of Outputs：4
- Voltage - Supply (Min)：2.5V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：7V
- Current - Output / Channel：25mA
- Frequency：800kHz ~ 1.6MHz
- Dimming：Single-Wire
- Applications：Backlight, Camera Flash
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-TQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The CAT3644HV3 is a high-efficiency quad LED driver IC manufactured by onsemi. It operates within an input voltage range of 2.5 V to 5.5 V and features four independent output channels. The device utilizes a charge pump architecture to drive LEDs, supporting PWM dimming for brightness control. It is housed in a TQFN-16 surface-mount package and is designed for applications requiring compact LED lighting solutions with high efficiency.
Feature Summary
- Integrates four independent LED driver channels for multi-zone lighting control
- Incorporates a charge pump circuit to enable efficient LED driving across varying input voltages
- Supports Pulse Width Modulation (PWM) dimming for precise brightness adjustment
Applications
- LED backlighting for mobile phones and handheld devices
- LCD display backlight systems
- Compact LED lighting modules in consumer electronics
Procurement Notes
Verify the exact suffix and marking code against the manufacturer's official datasheet to ensure compatibility with specific thermal and electrical requirements. Confirm availability status as distribution channels may list obsolete or discontinued stock. Cross-reference the package outline dimensions with PCB footprint libraries prior to procurement to prevent assembly errors.
Selection Notes
Select this component when a compact, four-channel LED driver with integrated charge pump functionality is required. Ensure the application input voltage falls within the 2.5 V to 5.5 V range. Consider the TQFN-16 package constraints for thermal management and board space. Verify that PWM dimming capabilities align with the system's control interface requirements.
Part Context
The CAT3644HV3 belongs to the CAT364x series of LED drivers from onsemi. This family focuses on high-efficiency solutions for portable electronic devices. The HV3 variant specifically denotes the four-channel configuration with charge pump support, distinguishing it from other channel counts or architectures within the same product line.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult onsemi's official replacement guide or contact technical support for validated cross-references.
