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Toshiba Semiconductor and Storage TB62747AFG,C8,EL
- Part No.:
- TB62747AFG,C8,EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- LED Drivers
- Package:
- 24-SOP (0.236", 6.00mm Width)
- Datasheet:
-
TB62747AFG,C8,EL.pdf
- Description:
- 16-CH CONSTANT CURRENT LED DRIVE
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
TB62747AFG,C8,EL from Toshiba is a 16-channel constant-current LED driver IC designed for LED panel displays and signage systems. It delivers precise 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. Its 24-pin SSOP package enables compact, high-density LED array control in industrial display applications.
For engineers reviewing the TB62747AFG,C8,EL datasheet, TB62747AFG,C8,EL pinout, TB62747AFG,C8,EL application, or TB62747AFG,C8,EL equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-ready availability details - all grounded in Toshiba's official TB62747AFG/AFNG datasheet (Rev. 2017-01-24).
Technical Context
The TB62747AFG,C8,EL 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 serial clock (SCK) accepts up to 25 MHz input, and data is latched on SLAT low level, enabling cascaded daisy-chain configurations without external timing constraints.
Output current is set globally via a single external resistor (REXT) connected between pin 23 and GND, delivering ±1.5% channel-to-channel and device-to-device accuracy at 3.3 V or 5.0 V supply. The OE pin provides synchronous global enable/disable with 100 ns minimum pulse width, while SOUT supports seamless multi-device cascading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent sink-type constant-current outputs (OUT0–OUT15); enables uniform drive of LED segments or pixels without per-channel resistors. |
| Output current range | 1.5–35 mA @ 3.3 V supply; 1.5–45 mA @ 5.0 V supply - adjustable via single REXT resistor, simplifying BOM and layout. |
| Current accuracy | ±1.5% max (ch-to-ch & IC-to-IC) - ensures consistent LED brightness across channels and boards without calibration. |
| Serial data rate | Up to 25 MHz SCK frequency - supports fast refresh rates for dynamic LED displays (e.g., scrolling text, animations). |
| Logic interface | 3.3 V/5.0 V CMOS-compatible with Schmitt-trigger inputs - eliminates need for level shifters when interfacing with microcontrollers or FPGAs. |
| Max output voltage | 26 V - allows direct driving of multi-LED strings (e.g., 6–8 white LEDs in series at ~3.2 V each) without external boost circuitry. |
| Enable response | twOE(L) = 100 ns min - enables precise frame-blanking or strobing in high-speed multiplexed displays. |
Pinout & Package
Package: SSOP24-P-300-1.00B (24-pin shrink small-outline package, 0.65 mm pitch not applicable - TB62747AFG uses 1.00 mm pitch; weight 0.29 g typ.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary return path for all internal logic and output current; must be low-impedance to minimize noise coupling into analog current regulation. |
| SIN (Pin 2) | Serial data input | Accepts LSB-first serial data stream synchronized to SCK rising edge; Schmitt-trigger input rejects noise on long PCB traces. |
| SCK (Pin 3) | Serial clock input | Drives internal shift register on rising edge; 25 MHz max rate enables <1 µs per bit - critical for >1 kHz display update rates. |
| SLAT (Pin 4) | Latch signal input | Low-level active latch; transfers shift register contents to output latches - essential for glitch-free parallel output updates. |
| OUT0–OUT15 (Pins 5–20) | Constant-current sink outputs | Each drives LED cathode to GND; current set by REXT; VO(max) = 26 V allows high-side LED anode connection to up to 26 V rail. |
| OE (Pin 21) | Output enable | Active-low global shutdown; forces all outputs OFF regardless of latch state - used for PWM dimming or fault-safe blanking. |
| SOUT (Pin 22) | Serial data output | Shifts out MSB of internal register; enables daisy-chaining multiple TB62747AFG,C8,EL devices with single controller. |
| REXT (Pin 23) | Current-setting resistor node | Connects external resistor to GND; sets identical current for all 16 outputs - eliminates per-channel trimming and reduces component count. |
| VDD (Pin 24) | Power supply | 3.0–5.5 V supply for logic and output stages; Bi-CMOS process ensures stable operation across full range with low quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor current programming | One external REXT sets identical 16-channel output current - reduces BOM cost, layout area, and thermal mismatch vs. per-channel resistors. |
| High-speed serial interface | 25 MHz SCK with 100 ns OE response - supports real-time display updates and synchronized multi-chip operation in large LED walls. |
| Integrated power-on reset (POR) | Ensures known initial state (outputs OFF) at power-up - prevents unintended LED flash or latch corruption during supply ramp. |
| Bi-CMOS process technology | Combines CMOS logic density with bipolar current-source precision - achieves ±1.5% current matching and 26 V output compliance simultaneously. |
| Schmitt-trigger input logic | Hysteresis on SIN/SCK/SLAT/OE pins rejects noise and ensures clean clock/data sampling - improves reliability in electrically noisy industrial environments. |
Applications
| Indoor LED Signage | Industrial Panel Displays |
|---|---|
Use Scenario: Driving 16-segment alphanumeric modules or dot-matrix panels in factory HMIs and control cabinets. IC Role / Device Role / Timing Role: Constant-current sink driver with serial-in/parallel-out interface; provides uniform segment brightness and supports firmware-controlled character updates via SPI-like protocol. Use Value: Eliminates discrete current-limiting resistors per segment, reducing component count by >90% and improving thermal consistency across display rows. | Use Scenario: Backlighting segmented indicators and status LEDs on industrial PLC I/O modules and power supplies. IC Role / Device Role / Timing Role: Low-pin-count LED driver with global OE control; enables synchronized blink patterns and fault-indication strobing via microcontroller GPIO. Use Value: 100 ns OE response allows precise 1–10 kHz PWM dimming without visible flicker, meeting IEC 61000-3-2 harmonic limits for Class A equipment. |
| Architectural Lighting Controls | Test & Measurement Equipment UI |
Use Scenario: Controlling RGB LED strips or monochrome accent lighting in commercial building control systems. IC Role / Device Role / Timing Role: Cascadable constant-current sink; supports daisy-chained configuration to drive >100 LEDs from one MCU SPI port. Use Value: 26 V output compliance enables direct drive of 6–8 LED strings without external DC-DC converters - lowering system cost and EMI footprint. | Use Scenario: Driving status LEDs and bar-graph indicators on benchtop instruments like multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Precision current source with ±1.5% matching; ensures consistent LED luminance across measurement ranges and calibration states. Use Value: Tight current accuracy minimizes visual brightness variation between adjacent indicators - critical for user-perceived quality and readability under varying ambient light. |
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 |
|---|---|---|---|
| TB62726FNG | 16-channel, same Bi-CMOS process, but SSOP24-0.65A package (AFNG); lower thermal resistance (120°C/W vs. 94°C/W), lower weight (0.14 g). | Preferred where board space is constrained and higher thermal performance is needed; requires re-layout due to 0.65 mm pitch. | Select TB62726FNG only if PCB redesign for finer pitch is feasible and thermal margin is critical; TB62747AFG,C8,EL remains optimal for legacy 1.00 mm pitch designs. |
| AL8861T-7 | 16-channel constant-current driver with integrated PWM dimming controller; operates from 4.5–40 V input; no shift register - requires parallel digital interface. | Used in automotive interior lighting where wide-input-voltage tolerance and built-in PWM are mandatory; lacks serial interface for microcontroller-constrained systems. | Choose AL8861T-7 only when input voltage exceeds 5.5 V or integrated PWM control is required; TB62747AFG,C8,EL is superior for SPI-based embedded control with tight BOM control. |
Compared with TB62726FNG, TB62747AFG,C8,EL offers proven compatibility with existing 1.00 mm-pitch SSOP footprints and higher power dissipation capability (1.32 W vs. 1.04 W). Against AL8861T-7, TB62747AFG,C8,EL delivers lower system cost through serial interface consolidation and eliminates need for external PWM timing components - making it ideal for cost-sensitive, space-constrained industrial displays.
Availability
TB62747AFG,C8,EL is available at Aetrix Electronics and suitable for indoor LED signage, industrial panel displays, architectural lighting controls, and test & measurement equipment UI requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for TB62747AFG,C8,EL 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 devices, logic ICs, and display drivers, with decades of expertise in LED control solutions.
The TB62747 series belongs to Toshiba's dedicated LED driver product line, engineered specifically for high-reliability, constant-current-driven LED panel applications in industrial and commercial environments - emphasizing precision current matching, noise-immune serial control, and robust thermal design.
FAQ
What is the maximum output voltage rating for TB62747AFG,C8,EL?
The TB62747AFG,C8,EL has a maximum output voltage rating of 26 V, as specified in its Absolute Maximum Ratings table. This allows the IC to drive LED strings with total forward voltage up to 26 V - for example, eight white LEDs (3.2 V each) in series. Exceeding this voltage risks permanent damage to the output transistors, so proper LED string voltage selection and overvoltage protection must be implemented in the application design.
How is output current set on TB62747AFG,C8,EL?
Output current on TB62747AFG,C8,EL is set globally using a single external resistor (REXT) connected between pin 23 (REXT) and GND. The theoretical relationship is IOUT ≈ 1.13 V ÷ REXT × 14.9. For example, a 1.2 kΩ resistor yields ~14 mA per channel at 25°C. All 16 outputs share this current value, ensuring uniform brightness without per-channel calibration or trimming components.
Does TB62747AFG,C8,EL support daisy-chaining with other devices?
Yes, TB62747AFG,C8,EL supports daisy-chaining via its SOUT (pin 22) and SIN (pin 2) pins. Serial data shifted into the first device appears at SOUT and can be fed directly into the SIN of the next device in the chain. This enables expansion to dozens of outputs using a single SPI interface - confirmed in the datasheet's cascade connection specification (fSCK = 25 MHz max) and truth table behavior.
What is the operating temperature range for TB62747AFG,C8,EL?
TB62747AFG,C8,EL is rated for an operating temperature range of –40°C to +85°C, as defined in its Operating Conditions section. This industrial-grade range ensures reliable performance in factory automation panels, outdoor signage enclosures, and HVAC control units. Thermal derating must be applied above 25°C ambient per the power dissipation curves - e.g., at 85°C, maximum power drops to ~0.7 W for the AFG package.
Can TB62747AFG,C8,EL operate from a 3.3 V supply?
Yes, TB62747AFG,C8,EL fully supports 3.3 V operation. Its power supply range is 3.0 V to 5.5 V, and electrical characteristics are explicitly characterized at both 3.3 V and 5.0 V. At 3.3 V, output current is adjustable from 1.5 mA to 35 mA, and logic inputs meet CMOS thresholds (VIH ≥ 0.7×VDD, VIL ≤ 0.3×VDD), ensuring compatibility with 3.3 V microcontrollers without level shifting.
TB62747AFG,C8,EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 24-SOP (0.236", 6.00mm 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:
- LED Lighting
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TB62747AFG,C8,EL FAQ
1.How can I place an order for TB62747AFG,C8,EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB62747AFG,C8,EL 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 TB62747AFG,C8,EL reliable?
The price and inventory of TB62747AFG,C8,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB62747AFG,C8,EL is usually 5 days.
3.What payment methods are accepted for TB62747AFG,C8,EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB62747AFG,C8,EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB62747AFG,C8,EL?
TB62747AFG,C8,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB62747AFG,C8,EL 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 TB62747AFG,C8,EL?
For technical support, including TB62747AFG,C8,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB62747AFG,C8,EL requirements.
6.How does Aetrix verify that TB62747AFG,C8,EL is sourced from the original manufacturer or authorized distributors?
All TB62747AFG,C8,EL 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 TB62747AFG,C8,EL meets industry standards.
7.What is the process for return or replacement of TB62747AFG,C8,EL?
All TB62747AFG,C8,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB62747AFG,C8,EL, 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 TB62747AFG,C8,EL part is unused and in its original packaging.
Return procedure for TB62747AFG,C8,EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TB62747AFG,C8,EL 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
-
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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