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TI TLC5957RTQRRoHS

Manufacturer
TI
MPN
TLC5957RTQR
LCSC Part #
C2679170
Packaging
HVQFN-56-EP(8x8)
Customer #
Key Attributes
48-channel, 16-bit ES-PWM LED driver with pre-charge FET, LED open-circuit detection, and Caterpillar elimination functions
Datasheetpdf iconTI TLC5957RTQR
In-Stock: 1,702
1,702 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 2.9549$ 2.95
10+$ 2.4875$ 24.88
30+$ 2.1971$ 65.91
100+$ 1.8969$ 189.69
500+$ 1.7622$ 881.10
1,000+$ 1.7038$ 1703.80
Standard Packaging2000/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/LED Drivers ICs
ManufacturerTI
PackagingHVQFN-56-EP(8x8)
Output Voltage-
FeaturesLED open-circuit protection;Over-Temperature Protection (OTP);Built-in soft-start
Frequency - Switching33MHz
Switch Tube (Built-In/External)Built-in
Voltage - Input(AC)-
Operating temperature-40℃~+85℃
Number of Channels48
Topology-
Type-
Output Current25mA
Voltage - Input(DC)3V~5.5V
Constant Current Accuracy3%
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2000
Sales UnitPiece

Introduction

AI Translation

The TLC5957 is a 48-channel constant-current sink driver. Each channel features individually adjustable 65,536-step pulse-width modulation (PWM) grayscale (GS) brightness control. The output channels are divided into three groups, each with a 512-step color brightness control (CC) function. CC can adjust the brightness between colors. The maximum current values of all 48 channels can be set through an 8-step global brightness control (BC) function. BC adjusts the brightness deviation between LED drivers. The GS, CC, and BC data can be accessed via a serial interface port. The TLC5957 has an error flag: LED open detection (LOD), which can be read via the serial interface port. Each constant-current output has a pre-charged field-effect transistor (FET), which can eliminate ghosting in multiplexed LED displays and improve display performance. In addition, the TLC5957 has an enhancement circuit to eliminate the caterpillar effect caused by LED open circuits. The TLC5957 has a poker data transmission mode; the GS data length can be configured from 9 bits to 16 bits, depending on the PWM bits in each sub-segment. The poker mode can significantly improve the visual refresh rate of multiplexed applications.

Features

AI Translation
  • 48 constant current sink output channels with maximum BC/CC data sink current: 1~20mA (VCC = 3.3V), 1~25mA (VCC = 5V)
  • Global brightness control (BC): 3-bit (8 steps)
  • Global color brightness control (CC) per color group: 9-bit (512 steps), three groups
  • LED supply voltage up to 10V
  • VCC = 3.0V to 5.5V
  • Knee voltage at 10mA: Vout = 0.24V
  • Constant current accuracy: channel-to-channel = ±1% (typ), ±3% (max); device-to-device = ±1% (typ), ±2% (max)
  • Data transfer rate: 33MHz
  • Grayscale control clock: 33MHz
  • Pre-charge FET eliminates ghosting
  • Enhanced circuit eliminates Caterpillar effect
  • Selectable data bits and PWM bits (9-bit to 16-bit)
  • Selectable conventional PWM and ES-PWM
  • LED open detection (LOD)
  • Thermal shutdown (TSD)
  • Auto display repeat / auto data refresh
  • Delayed switching prevents inrush current
  • Operating temperature range: -40°C to +85°C

Applications

AI Translation
  • LED signal boards with multiplexed systems
  • Multiple daisy-chain TLC5957 typical application circuits