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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 40MA 24QSOP
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：19V
- Current - Output / Channel：40mA
- Frequency：30MHz
- Dimming：PWM
- Applications：Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：24-QSOP
- Grade：-
- Qualification：-
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Overview
The LED1642GWPTR is a monolithic, low-voltage, low-current power 16-bit shift register designed for LED panel displays. It features sixteen regulated current sources providing constant current from 3 mA to 40 mA. The device guarantees a 20 V output driving capability, allowing users to connect several LEDs in series. Supply voltage ranges between 3 V and 5.5 V. It includes 12/16-bit PWM grayscale brightness control, programmable turn-on/off times, and open/short error detection modes.
Feature Summary
- Integrates sixteen constant current output channels with adjustable current gain
- Supports high-speed data transmission via a 30 MHz clock interface
- Includes advanced thermal management with overtemperature alert and shutdown
- Features selectable gradual output delay to reduce inrush current
Applications
- LED panel displays
- High data rate transmission systems
- Low noise generation applications
Procurement Notes
Verify the specific package variant, as the base model LED1642GW utilizes QSOP24 packaging while other suffixes may differ. Confirm that the industrial grade rating aligns with your operational temperature requirements of -40°C to 125°C. Ensure compatibility with the 3 V to 5.5 V supply range before finalizing procurement specifications.
Selection Notes
Select this component when designing LED panels requiring precise current regulation across multiple channels. The integrated 7-bit global current gain adjustment allows flexibility without additional external components. Consider the programmable output timing features if EMI reduction is a critical design constraint for the target application.
Part Context
This part belongs to the LED1642 family of LED array drivers from STMicroelectronics. These devices are engineered to meet automotive industry reliability standards while offering cost-effective solutions for display applications. The family emphasizes high channel matching accuracy and robust diagnostic capabilities for system stability.
Replacement Considerations
The ALED1642GWXTTR serves as a verified automotive-grade alternative within the same functional family. Verify pinout compatibility and thermal performance characteristics when substituting between industrial and automotive grades.
