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Toshiba Semiconductor and Storage TB62747AFNG,C8EL
- Part No.:
- TB62747AFNG,C8EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- LED Drivers
- Package:
- 24-LSSOP (0.220", 5.60mm Width)
- Datasheet:
-
TB62747AFNG,C8EL.pdf
- Description:
- IC LED DRIVER LINEAR 45MA 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:15,655
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Product details
Overview
TB62747AFNG,C8EL from Toshiba is a 16-channel constant-current LED driver IC designed for LED panel displays and signage systems. It delivers precise, adjustable sink-current outputs (1.5–45 mA), supports 3.3 V/5.0 V CMOS logic interfaces with Schmitt-trigger inputs, and features serial-in/parallel-out shift register + latch architecture for high-speed data transfer up to 25 MHz.
For engineers reviewing the TB62747AFNG,C8EL datasheet, TB62747AFNG,C8EL pinout, TB62747AFNG,C8EL application, or TB62747AFNG,C8EL equivalent, key selection considerations include output current accuracy (±1.5% channel-to-channel), 100 ns minimum OE pulse width, SSOP24-0.65 mm pitch package compatibility, and thermal performance (Rth(j-a) = 120 °C/W on PCB).
Technical Context
The TB62747AFNG,C8EL integrates a 16-bit shift register, 16-bit D-latch, AND-gated output control, and 16 matched constant-current sinks-all fabricated in Bi-CMOS process. Its leveled-latch architecture requires SLAT held low to retain data, while OE provides global output enable/disable with fast 100 ns turn-off timing.
It operates across 3.0–5.5 V supply, supports cascade connection via SOUT, and uses a single external REXT resistor to set all 16 output currents identically. Output voltage compliance reaches 26 V, enabling direct drive of multi-LED strings without external transistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sink outputs for LED string control |
| Output current range | 1.5–45 mA per channel (set by single REXT resistor; 5.0 V supply) |
| Current accuracy | ±1.5% max between outputs and between devices at same REXT/VDD/VO |
| Serial clock frequency | Up to 25 MHz - enables rapid LED pattern updates in high-refresh-rate displays |
| Enable pulse width | twOE(L) ≥ 100 ns - supports tight PWM dimming control without output glitches |
| Supply voltage | 3.0–5.5 V - compatible with both 3.3 V and 5.0 V system logic rails |
| Operating temperature | −40 to +85 °C - suitable for indoor/outdoor industrial LED signage environments |
| Output voltage rating | 26 V max - supports driving 6–8 white LEDs in series at typical forward voltage |
Pinout & Package
Package: SSOP24-P-300-0.65A (24-pin shrink small outline package, 0.65 mm pitch, 8.6 × 3.9 mm body, 0.14 g typical weight).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for all internal logic and output current sinks |
| SIN (Pin 2) | Serial data input | CMOS-level serial data input synchronized to rising edge of SCK |
| SCK (Pin 3) | Serial clock input | Rising-edge-triggered clock for shifting data into 16-bit shift register |
| SLAT (Pin 4) | Latch signal input | Low-active signal that transfers shift register contents to 16-bit latch |
| OUT0–OUT15 (Pins 5–20) | Constant-current sink outputs | 16 open-drain outputs each capable of sinking up to 45 mA with ±1.5% matching |
| OE (Pin 21) | Output enable | Active-low global enable; forces all outputs OFF when high (no current flow) |
| SOUT (Pin 22) | Serial data output | Shift register Q15 output for daisy-chaining multiple TB62747AFNG,C8EL devices |
| REXT (Pin 23) | Current setting reference | Connection point for external resistor to ground; sets all 16 output currents identically |
| VDD (Pin 24) | Power supply | Primary supply rail (3.0–5.5 V) powering logic and current regulation circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor current programming | One external REXT sets identical current for all 16 outputs - simplifies BOM and layout vs. per-channel resistors |
| High-speed serial interface | 25 MHz max SCK frequency enables <400 ns per bit - critical for real-time LED animation in large panels |
| Channel-to-channel current matching | ±1.5% max deviation ensures uniform LED brightness across entire display without per-channel calibration |
| Integrated power-on reset (POR) | Ensures known initial state (all outputs disabled) at power-up - prevents unintended LED flash or latch corruption |
| Bi-CMOS process technology | Combines CMOS logic density with bipolar current-source precision - achieves high speed and tight current tolerance |
| 3.3 V / 5.0 V dual-voltage logic compatibility | Schmitt-trigger inputs accept both 3.3 V and 5.0 V logic levels - eliminates level-shifting in mixed-supply systems |
Applications
| Indoor LED Signage | Architectural Lighting Panels |
|---|---|
Use Scenario: Driving segmented alphanumeric characters and icons in retail store signage with variable brightness control. IC Role / Device Role / Timing Role: Constant-current sink driver providing stable per-segment current under PWM dimming at 1–2 kHz. Use Value: Eliminates brightness variation across segments using ±1.5% current matching and supports smooth 256-step dimming via high-speed serial update. | Use Scenario: Controlling uniform illumination zones in ceiling-mounted linear LED panels for office buildings. IC Role / Device Role / Timing Role: 16-channel current source managing parallel LED strings per zone with centralized REXT tuning. Use Value: Enables consistent lumen output across zones without per-string current sensing or trimming, reducing assembly cost and calibration time. |
| Industrial HMI Displays | Transportation Information Boards |
Use Scenario: Backlighting status indicators and warning lights on factory HMIs exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Robust LED driver operating from −40 to +85 °C with integrated POR and overvoltage protection. Use Value: Maintains specified current accuracy across full temperature range and prevents startup glitches via hardware POR - improves system reliability. | Use Scenario: Driving high-brightness red/green LED matrix modules in outdoor bus/train arrival boards. IC Role / Device Role / Timing Role: High-voltage (26 V) sink driver supporting long LED strings powered from 24 V rail with minimal external components. Use Value: Reduces bill-of-materials by eliminating external current-setting transistors and enables compact module design using SSOP24-0.65A footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB62747AFG | Same die, SSOP24-1.00 mm pitch package (larger footprint, higher thermal resistance: 94 °C/W) | Preferred where PCB reflow compatibility with legacy 1.00 mm pitch footprints is required | Select TB62747AFG if existing layout uses 1.00 mm pitch land pattern; TB62747AFNG,C8EL requires updated stencil and placement. |
| AL8862T-7 | 16-channel constant-current driver with integrated boost controller; requires external inductor; no serial interface | Used in isolated or high-VF LED string designs where input voltage < LED string VF | Choose AL8862T-7 only when boosting from low input (e.g., 5 V) to high-output (e.g., 48 V) is needed; TB62747AFNG,C8EL is simpler for fixed-rail, non-boosted applications. |
Compared with TB62747AFG, the TB62747AFNG,C8EL offers finer pitch (0.65 mm vs. 1.00 mm) and lower thermal resistance on PCB (120 vs. 94 °C/W), while the AL8862T-7 adds DC-DC conversion capability but removes serial control - making TB62747AFNG,C8EL optimal for space-constrained, logic-controlled LED arrays with stable supply rails.
Availability
TB62747AFNG,C8EL is available at Aetrix Electronics and suitable for indoor LED signage, architectural lighting panels, industrial HMI displays, and transportation information boards requiring stable component supply and long-term production continuity.
Supply support for TB62747AFNG,C8EL 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
Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in power management, motor drivers, and LED control ICs for industrial and consumer applications.
The TB62747 series was developed specifically for high-reliability, high-density LED panel displays - emphasizing current matching, serial scalability, and robust operation across commercial temperature ranges.
FAQ
What is the maximum output voltage compliance of the TB62747AFNG,C8EL?
The TB62747AFNG,C8EL supports a maximum output voltage (VO) of 26 V. This allows it to drive longer LED strings-such as six to eight white LEDs in series-without requiring external high-voltage transistors. The specification is validated under absolute maximum ratings and applies across the full operating temperature range (−40 to +85 °C). Exceeding 26 V may cause permanent damage.
How does the REXT resistor set output current in the TB62747AFNG,C8EL?
The TB62747AFNG,C8EL uses a single external resistor (REXT) connected between Pin 23 and GND to set all 16 output currents identically. The theoretical relationship is IOUT ≈ 1.13 V ÷ REXT × 14.9. For example, a 1.2 kΩ REXT yields ~14 mA per channel at 25 °C. Current scales inversely with REXT value and remains tightly matched (±1.5%) across channels and devices.
Can the TB62747AFNG,C8EL be used in cascade configuration?
Yes, the TB62747AFNG,C8EL supports daisy-chain operation via its SOUT (Pin 22) pin, which outputs the Q15 bit of the internal shift register. Multiple TB62747AFNG,C8EL devices can be cascaded by connecting SOUT of one to SIN of the next, sharing SCK and SLAT. Maximum SCK frequency drops slightly in cascade due to signal degradation; Toshiba specifies 25 MHz max for single-device and confirms functional operation in multi-device chains with proper PCB routing.
What is the function of the SLAT pin on the TB62747AFNG,C8EL?
The SLAT (latch) pin (Pin 4) on the TB62747AFNG,C8EL is a level-sensitive control input that transfers data from the 16-bit shift register to the output latch. When SLAT is held low, the latch holds its state and outputs reflect the latched data. When SLAT goes high, data passes transparently - but outputs only change when OE is active. This architecture enables precise timing control for LED pattern updates without ghosting.
Does the TB62747AFNG,C8EL include built-in protection features?
The TB62747AFNG,C8EL incorporates Power-On Reset (POR) to ensure all outputs default to OFF at startup, preventing unintended LED activation. It also includes absolute maximum ratings protection against overvoltage (6.0 V on VDD, 26 V on outputs) and overcurrent (55 mA per output). However, it lacks integrated thermal shutdown or short-circuit foldback - external design measures (e.g., fuse, PCB thermal relief) are recommended for sustained overload conditions.
TB62747AFNG,C8EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 24-LSSOP (0.220", 5.60mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 26V
- Current - Output / Channel:
- 45mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TB62747AFNG,C8EL FAQ
1.How can I place an order for TB62747AFNG,C8EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB62747AFNG,C8EL 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 TB62747AFNG,C8EL reliable?
The price and inventory of TB62747AFNG,C8EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB62747AFNG,C8EL is usually 5 days.
3.What payment methods are accepted for TB62747AFNG,C8EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB62747AFNG,C8EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB62747AFNG,C8EL?
TB62747AFNG,C8EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB62747AFNG,C8EL 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 TB62747AFNG,C8EL?
For technical support, including TB62747AFNG,C8EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB62747AFNG,C8EL requirements.
6.How does Aetrix verify that TB62747AFNG,C8EL is sourced from the original manufacturer or authorized distributors?
All TB62747AFNG,C8EL 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 TB62747AFNG,C8EL meets industry standards.
7.What is the process for return or replacement of TB62747AFNG,C8EL?
All TB62747AFNG,C8EL units undergo pre-shipment inspection (PSI). If there is an issue with TB62747AFNG,C8EL, 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 TB62747AFNG,C8EL part is unused and in its original packaging.
Return procedure for TB62747AFNG,C8EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TB62747AFNG,C8EL 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
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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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