ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC DRIVE LED 4CH QUADMODE 16TQFN
- Series：QUAD-Mode®
- Mfr：onsemi
- Package：Cut Tape (CT)
- Type：-
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- 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：-
- Applications：Backlight
- 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：-
Download product information
Overview
The CAT3644HV3-T2 is an obsolete LED driver IC from onsemi, packaged in a 16-lead TQFN (3x3mm) format. It operates with a supply voltage range of 2.5V to 5.5V and supports switching frequencies between 1MHz and 1.6MHz. The device features four independent channels capable of driving LEDs with a maximum current of 25mA per channel. It includes four PWM inputs for brightness control and functions within an ambient temperature range of -40°C to +85°C.
Feature Summary
- Four-channel output configuration for independent LED control
- Integrated pulse-width modulation capability for dimming applications
- Compact surface-mount package design suitable for space-constrained layouts
Applications
- LCD backlight illumination systems
- Portable electronic device lighting
- General indicator LED arrays
Procurement Notes
This component is officially listed as obsolete by the manufacturer. Verify availability through secondary market distributors or consider equivalent replacement parts. Confirm RoHS compliance status and original packaging integrity when sourcing from non-direct suppliers. Ensure compatibility with existing circuit designs before procurement.
Selection Notes
Select this part only if legacy system compatibility is required. Evaluate alternative modern drivers with similar electrical specifications and pinout configurations. Consider thermal performance requirements relative to the TQFN-16 package limitations. Verify that the 25mA per channel current rating meets the specific load demands of the target application.
Part Context
Part of the CAT3644 series quad-mode LED drivers designed for portable electronics. The HV3 suffix indicates specific internal configuration variants within the family. Manufactured by onsemi, formerly known as Fairchild Semiconductor. Belongs to the power management integrated circuit category focused on display and lighting control solutions.
Replacement Considerations
Check for direct pin-compatible replacements from onsemi or other manufacturers offering updated versions of the CAT3644 series. Verify that substitute components maintain identical voltage ranges, frequency characteristics, and channel counts to ensure seamless integration without circuit redesign.
