TLC5947RHBR

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TLC5947RHBR

IC LED DRIVER LINEAR 30MA 32VQFN

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Гарантия 365 дней

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Спецификации

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type Linear
Topology Shift Register
InternalSwitch(s) Yes
NumberofOutputs 24
Voltage-Supply(Min) 3V
Voltage-Supply(Max) 5.5V
Voltage-Output 30V
Current-Output/Channel 30mA
Frequency 4MHz
Applications Backlight
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 32-VFQFN Exposed Pad

Обзор

Description

The TLC5947RHBR is a 24-channel, constant-current LED driver from Texas Instruments. It is designed for applications requiring precise and efficient control of multiple LEDs, such as displays and lighting systems. Each of the 24 channels can be individually programmed with a 12-bit grayscale PWM, providing a wide range of brightness levels. The device supports a maximum output current of 30 mA per channel, adjustable through an external resistor, making it suitable for driving small to medium-sized LEDs.
The TLC5947RHBR operates with a supply voltage range of 3V to 5.5V and utilizes a shift register-based data input method, allowing for reduced pin count and simplified interfacing with microcontrollers. The device also features built-in circuitry to minimize flicker and ensure smooth dimming transitions. Its thermal and short-circuit protections enhance reliability in demanding environments. The device is housed in a compact 32-pin HTSSOP package, making it ideal for space-constrained designs. Overall, the TLC5947RHBR offers a versatile and efficient solution for high-density LED driving applications.

Features

The TLC5947RHBR is a 24-channel, constant-current sink LED driver designed for applications requiring precise control over LED brightness. Key features include:
1. 24 Channels: It can control up to 24 separate LEDs or LED segments, making it suitable for complex displays or lighting systems.
2. Constant Current Sinking: Each channel can sink a constant current, ensuring consistent brightness across all connected LEDs.
3. High Output Current: It supports up to 30 mA per channel, adjustable via an external resistor, allowing flexibility in LED selection.
4. PWM Control: The driver uses 12-bit PWM (Pulse Width Modulation) for each channel, providing fine granularity in brightness control.
5. Serial Interface: It features a serial interface for easy integration with microcontrollers and other digital systems.
6. Thermal Management: Built-in thermal shutdown and current limit protection enhance reliability and safety.
7. Wide Supply Voltage Range: Operates from 3.0V to 5.5V, suitable for battery-powered and low-voltage applications.
8. Package Options: Available in compact packages, ideal for space-constrained designs.
These features make the TLC5947RHBR a versatile choice for LED driving applications requiring high precision and reliability.

Package

The TLC5947RHBR is a 24-channel, 12-bit PWM LED driver from Texas Instruments, available in a QFN (Quad Flat No-leads) package. Specifically, it comes in an "RHB" package type, which is a VQFN (Very Thin Quad Flat No-lead) with 32 pins. This packaging provides efficient thermal performance and compact size, suitable for space-constrained applications.

Pinout

The TLC5947RHBR is a 24-channel, constant-current sink LED driver from Texas Instruments. It is typically available in a 32-pin QFN package. Each of its 24 channels can sink up to 30 mA of current, making it suitable for driving LED displays and lighting applications.
Key functions include:
1. Channel Control: Each of the 24 output channels can be individually controlled, allowing for precise LED brightness management.

2. PWM and Grayscale Control: The device uses 12-bit PWM for grayscale control, providing 4096 levels of brightness for each channel.
3. Serial Interface: It utilizes a serial interface for data input, making it straightforward to integrate into microcontroller systems.
4. Constant Current Sink: It maintains a constant current output, which is crucial for consistent LED brightness, regardless of LED forward voltage variations.
5. Thermal Management: The package and design support thermal management features to ensure reliable operation under various conditions.
The TLC5947RHBR is suitable for applications such as RGB LED displays, signage, and general LED lighting controls.

Manufacturer

The TLC5947RHBR is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and integrated circuits. They are a key player in the electronics industry, providing solutions and components for a wide range of applications, including industrial, automotive, consumer electronics, and communications. TI is known for its focus on innovation and development of analog and embedded processing products.

Application

The TLC5947RHBR is a 24-channel, 12-bit PWM LED driver commonly used in applications requiring precise LED control. Key areas include LED displays and signage, architectural lighting, stage lighting, and decorative lighting systems. Its ability to handle multiple LEDs with individual brightness control makes it ideal for applications needing intricate lighting effects and color mixing. Additionally, it's used in automotive lighting systems and other embedded applications where space-efficient, high-channel-count LED driving is necessary.

Equivalent

The TLC5947RHBR is a 24-channel, PWM LED driver by Texas Instruments. Equivalent products include:
1. MAX7219 by Maxim Integrated: 8-digit LED display driver with segment control.
2. STP24DP05 by STMicroelectronics: 24-bit constant current LED sink driver.
3. MBI5026 by Macroblock: 16-channel constant current LED driver.
4. LPD6803: LED driver chip often used in RGB LED strips.
Check for specific electrical compatibility and feature sets when choosing an equivalent.

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