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Texas Instruments TLC5922DAPG4
- Part No.:
- TLC5922DAPG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TLC5922DAPG4.pdf
- Description:
- IC LED DRVR LINEAR 80MA 32HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,038
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Product details
Overview
TLC5922DAPG4 from Texas Instruments is a 16-channel constant-current LED sink driver with 7-bit dot-correction (128-step brightness control) per channel, ±1% typical current accuracy, and 30 MHz SPI-compatible serial interface. It operates from 3.0 V to 5.5 V supply and supports up to 17 V LED supply voltage, enabling use in high-brightness LED signage and display backlighting systems.
For engineers reviewing the TLC5922DAPG4 datasheet, TLC5922DAPG4 pinout, TLC5922DAPG4 application, or TLC5922DAPG4 equivalent, key selection considerations include its 16-channel independent current sinking capability, programmable dot-correction register, BLANK-controlled global output disable, and HTSSOP PowerPAD™ thermal package for high-power-density LED drive.
Technical Context
The TLC5922DAPG4 integrates dual-mode serial shift registers: a 16-bit register for ON/OFF control and a 112-bit register (16 × 7-bit) for per-channel dot-correction data. Mode selection is controlled by the MODE pin, routing SCLK/SIN/XLAT signals to either register set.
Each output features a constant-current sink with externally set maximum current (via IREF resistor), 20 ns graduated output delay (OUT0–OUT15), and fast switching (10 ns typ. tr/tf). Output current is regulated independently of load voltage up to 17 V, with ±1% typical matching across channels and ±4% device-to-device error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent constant-current sink outputs |
| Max Output Current | 80 mA per channel (set by external IREF resistor) |
| Dot-Correction Resolution | 7-bit (128 steps), enabling precise per-channel brightness tuning |
| Serial Interface | SPI-compatible, 30 MHz max clock rate, MSB-first, cascading via SOUT→SIN |
| Supply Range | VCC = 3.0 V to 5.5 V; LED supply up to 17 V at outputs |
| Operating Temperature | –20°C to +85°C ambient, suitable for industrial indoor signage |
| Current Accuracy | ±1% typical channel-to-channel matching; ±4% device-to-device |
Pinout & Package
32-pin HTSSOP (DAP) package with exposed thermal PowerPAD™ die pad for enhanced heat dissipation; requires PCB thermal vias and soldered thermal pad connection per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Analog/digital ground common return for internal logic and current sensing |
| BLANK (Pin 2) | Global output enable | High = all 16 outputs forced OFF regardless of register state; low = normal operation |
| XLAT (Pin 3) | Data latch strobe | Rising edge latches serial data into either ON/OFF or dot-correction register based on MODE |
| SCLK (Pin 4) | Serial clock input | Drives internal shift register; rising edge clocks SIN data; frequency up to 30 MHz |
| SIN (Pin 5) | Serial data input | MSB-first input for 16-bit ON/OFF or 112-bit dot-correction data packets |
| PGND (Pins 6, 14, 19, 24, 27) | Power ground | Dedicated low-impedance return paths for output current sinks to minimize noise coupling |
| OUT0–OUT15 (Pins 7–8, 10–13, 15–16, 17–18, 20–23, 25–26) | Constant-current sink outputs | 16 individually controllable current sinks; each supports up to 80 mA into LED loads |
| VCC (Pin 32) | Logic supply | Powers internal CMOS logic; must be 3.0–5.5 V; decoupling required near pin |
| IREF (Pin 31) | Reference current setting | Connects to external resistor to GND; sets max output current = 40 × (1.24 V / RIREF) |
| MODE (Pin 30) | Function mode select | Low = ON/OFF register active (16-bit shift); high = dot-correction register active (112-bit shift) |
| SOUT (Pin 28) | Serial data output | Enables daisy-chaining multiple TLC5922 devices without external buffering |
Key Features
| Feature | Design Value |
|---|---|
| Controlled in-rush current | Graduated 20 ns output delay between OUT0–OUT15 reduces peak supply current during turn-on |
| Per-channel dot-correction | 7-bit (128-step) programmable current scaling enables uniform brightness across heterogeneous LED arrays |
| High-accuracy current regulation | ±1% typical channel-to-channel matching ensures consistent LED intensity without external calibration |
| Thermally enhanced packaging | HTSSOP PowerPAD™ package with exposed die pad supports >3 W power dissipation with proper PCB layout |
| Robust serial interface | 30 MHz SPI-compatible timing with 10 ns setup/hold margins ensures reliable communication in noisy environments |
Applications
| Monocolor LED Signboard | Fullcolor LED Display |
|---|---|
|
Use Scenario: Outdoor alphanumeric signboards using discrete red, green, and blue LEDs per pixel. IC Role / Device Role / Timing Role: Constant-current sink driver controlling ON/OFF and brightness of 16 LEDs per IC, synchronized via XLAT and BLANK for frame blanking. Use Value: Enables uniform luminance across large panels using per-channel dot-correction to compensate for LED binning and aging drift. |
Use Scenario: Indoor full-color video wall with RGB pixel pitch ≤10 mm. IC Role / Device Role / Timing Role: Per-pixel current sink for one color channel (e.g., 16 red LEDs per TLC5922DAPG4), driven by microcontroller with PWM timing coordinated across multiple ICs. Use Value: 30 MHz serial interface allows rapid refresh rates (>120 Hz) while minimizing MCU GPIO usage and PCB trace count. |
| Display Backlighting | Multicolor LED Lighting |
|
Use Scenario: Edge-lit LCD backlight for industrial HMIs requiring dimming and local contrast control. IC Role / Device Role / Timing Role: High-accuracy current source for 16 parallel LED strings, with BLANK used for global PWM dimming and dot-correction for zone-level luminance tuning. Use Value: ±1% current matching eliminates visible banding; 17 V output capability supports long LED strings without external boost circuitry. |
Use Scenario: Architectural accent lighting with tunable white or dynamic color mixing. IC Role / Device Role / Timing Role: Independent current control node for 16 discrete LEDs or LED groups, configured via SPI from lighting controller for scene-based intensity mapping. Use Value: Cascadable SOUT→SIN interface simplifies expansion to hundreds of LEDs with single MCU SPI port and minimal firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5940PWPR | 16-channel, 12-bit PWM + 6-bit dot-correction; integrated grayscale counter; no BLANK pin; requires external VREF | Better grayscale depth (4096 levels vs 128), but lacks dedicated global blanking and simpler current-setting interface | Choose TLC5940PWPR when high-resolution PWM dimming is prioritized over ease of BLANK-synchronized frame control. |
| MAX7219CWG+ | 8-digit/64-LED matrix driver; built-in BCD decode, scan limit, intensity control; 3-wire SPI; no per-channel current programming | Fixed 8×8 matrix architecture; no individual LED current adjustment; lower max current (40 mA) | Choose MAX7219CWG+ for numeric/character displays where matrix addressing suffices and per-LED tuning is unnecessary. |
Compared with TLC5922DAPG4, TLC5940PWPR offers deeper grayscale but less deterministic blanking control, while MAX7219CWG+ provides integrated display logic at the cost of flexible per-LED current configuration - making TLC5922DAPG4 optimal for custom LED array designs requiring precision current matching and synchronous global disable.
Availability
TLC5922DAPG4 is available at Aetrix Electronics and suitable for LED signage, display backlighting, and multicolor lighting applications requiring stable component supply, thermal reliability, and production-ready packaging.
Supply support for TLC5922DAPG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a U.S.-based semiconductor company specializing in analog, embedded processing, and power management solutions with broad industrial and automotive qualification.
The TLC5922DAPG4 belongs to TI's LED driver product line, designed specifically for high-accuracy, multi-channel constant-current LED control in signage, display, and architectural lighting systems.
FAQ
What is the maximum LED supply voltage supported by the TLC5922DAPG4?
The TLC5922DAPG4 supports an output voltage range of –0.3 V to 18 V, enabling direct connection to LED strings with up to 17 V forward voltage. This eliminates the need for external boost circuitry in many medium-voltage LED applications, and the device maintains constant-current regulation across this full range when properly heatsinked.
How does the TLC5922DAPG4 achieve per-channel brightness correction?
The TLC5922DAPG4 implements 7-bit dot-correction via a dedicated 112-bit shift register that stores a 128-step scaling factor (0–100%) for each of the 16 outputs. When MODE = HIGH, serial data is loaded into this register; the output current for OUTn becomes IMAX × (DCn/127), preserving linearity and enabling precise compensation for LED variance.
What thermal design guidance applies to the TLC5922DAPG4's PowerPAD™ package?
The TLC5922DAPG4 uses a 32-pin HTSSOP with an exposed thermal die pad (PowerPAD™). TI recommends soldering the pad to a minimum 200 mm² copper area with ≥4 thermal vias (0.3 mm diameter) to an internal ground plane. Per SLMA002, this achieves <20°C/W θJA, critical for sustaining 80 mA per channel at elevated ambient temperatures.
Can multiple TLC5922DAPG4 devices be cascaded, and how is data routed?
Yes - the TLC5922DAPG4 supports daisy-chaining via SOUT (Pin 28) to SIN (Pin 5) of the next device. Serial data propagates through the chain with each device shifting in its portion: 16 bits for ON/OFF mode or 112 bits for dot-correction mode. XLAT latches all devices simultaneously, ensuring synchronized output updates across the entire chain.
What is the function of the BLANK pin on the TLC5922DAPG4, and how does it interact with the ON/OFF registers?
The BLANK pin (Pin 2) provides hardware-level global output disable: when driven HIGH, all 16 OUTn outputs are forced OFF irrespective of their ON/OFF register state or dot-correction value. This enables flicker-free frame blanking in video applications and safe power sequencing. BLANK operates independently of MODE and serial interface timing.
TLC5922DAPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 80mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- Backlight, Lighting, Signage
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HTSSOP
TLC5922DAPG4 FAQ
1.How can I place an order for TLC5922DAPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5922DAPG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLC5922DAPG4 reliable?
The price and inventory of TLC5922DAPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5922DAPG4 is usually 5 days.
3.What payment methods are accepted for TLC5922DAPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5922DAPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5922DAPG4?
TLC5922DAPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5922DAPG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLC5922DAPG4?
For technical support, including TLC5922DAPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5922DAPG4 requirements.
6.How does Aetrix verify that TLC5922DAPG4 is sourced from the original manufacturer or authorized distributors?
All TLC5922DAPG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLC5922DAPG4 meets industry standards.
7.What is the process for return or replacement of TLC5922DAPG4?
All TLC5922DAPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC5922DAPG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLC5922DAPG4 part is unused and in its original packaging.
Return procedure for TLC5922DAPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5922DAPG4 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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