Toshiba Semiconductor and Storage TBD62004AFNG,EL

Overview

TBD62004AFNG,EL from Toshiba Electronic Devices & Storage Corporation is a 7-channel sink-type DMOS transistor array IC designed for driving inductive loads such as relays, solenoids, and small DC motors. It integrates clamp diodes per channel, supports up to 50 V output voltage and 500 mA/channel continuous current, and requires minimum 7.0 V input to activate outputs. It is commonly used in industrial control I/O modules and PLC output stages.

For engineers reviewing the TBD62004AFNG,EL datasheet, TBD62004AFNG,EL pinout, TBD62004AFNG,EL application, or TBD62004AFNG,EL equivalent, key selection criteria include its 7-channel sink architecture, SSOP-16 package with 0.65 mm pitch, input threshold compatibility with 7 V logic, thermal derating behavior on PCB, and built-in clamp diode protection for inductive switching.

Technical Context

The TBD62004AFNG,EL implements seven independent N-channel DMOS sink drivers in a single monolithic BiCD silicon die. Each channel features an integrated reverse-biased clamp diode connected between output (Ox) and COMMON pin to suppress flyback voltage during inductive load turn-off.

It operates with TTL/CMOS-compatible input logic thresholds: ≥7.0 V to guarantee output ON and ≤1.0 V to ensure output OFF at 85°C. The device lacks internal overcurrent or overvoltage protection, requiring external design safeguards against short circuits, back-EMF, and thermal runaway.

Key Specifications

Pinout & Package

Package: SSOP16-P-225-0.65B - 16-pin shrink small-outline package, 5.3 mm × 6.4 mm body, 0.65 mm lead pitch, gull-wing leads, typical weight 0.07 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar sink-driver array applications.

Compared with ULN2803ADWR and TBD62004APG, the TBD62004AFNG,EL offers superior board-area efficiency in SSOP-16 and simplified COMMON-rail wiring, though it demands stricter PCB thermal design due to lower power dissipation rating (0.78 W).

Availability

TBD62004AFNG,EL is available at Aetrix Electronics and suitable for industrial control systems, PLC output modules, relay driver boards, and automated test equipment requiring stable component supply and long-term sourcing continuity.

Supply support for TBD62004AFNG,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 designs and manufactures high-reliability semiconductor components for industrial, automotive, and consumer applications, with emphasis on power management and interface solutions.

The TBD62004AFNG,EL belongs to Toshiba's BiCD DMOS transistor array product line, engineered specifically for robust, high-voltage sink switching in industrial I/O and control systems with inductive loads.

FAQ

What is the input voltage threshold to reliably turn on TBD62004AFNG,EL outputs?

The TBD62004AFNG,EL requires a minimum input voltage of 7.0 V at each I1–I7 pin to guarantee output activation across the full operating temperature range (−40 to +85°C). At 25°C, the typical turn-on threshold is lower, but design must accommodate the 7.0 V minimum to ensure robustness against voltage drop, noise, and temperature drift. This value is specified in the Operating Ranges table under VIN(ON) for the TBD62004A series.

Does TBD62004AFNG,EL include built-in overcurrent or thermal protection?

No, the TBD62004AFNG,EL does not include built-in overcurrent, overtemperature, or short-circuit protection. As explicitly stated in the "Precautions for Using" section, exceeding absolute maximum ratings-even momentarily-can cause irreversible damage. External current limiting, PCB thermal design, and fault detection circuitry must be implemented by the system designer to ensure safe operation of TBD62004AFNG,EL.

How is the COMMON pin used in TBD62004AFNG,EL circuit design?

The COMMON pin (Pin 9) serves as the common anode connection for all seven internal clamp diodes. It must be connected directly to the positive terminal of the inductive load supply (e.g., +24 V), not to GND or VCC of the logic side. This configuration allows flyback current from any active output (O1–O7) to safely recirculate through its respective clamp diode and the COMMON rail, preventing voltage overshoot at the output pins of TBD62004AFNG,EL.

Can TBD62004AFNG,EL drive multiple loads simultaneously, and what limits total current?

Yes, TBD62004AFNG,EL can drive up to seven loads simultaneously, but total current is limited by thermal dissipation-not just per-channel rating. While each channel supports 500 mA continuously under ideal conditions, the SSOP-16 package has a maximum power dissipation of 0.78 W (at 25°C ambient on a 50×50 mm PCB). With typical R_ON ≈ 2 Ω, simultaneous 350 mA per channel across 7 channels would exceed this limit. Derating to ≤300 mA average per channel across 4–5 active outputs is recommended for sustained operation at 85°C.

What is the purpose of the clamp diode in TBD62004AFNG,EL, and how does it affect layout?

The clamp diode in TBD62004AFNG,EL provides internal flyback protection for inductive loads, conducting reverse EMF current from the load coil back to the COMMON rail during turn-off. To maximize effectiveness, the COMMON trace must be low-inductance and directly tied to the load supply's positive terminal; long or narrow COMMON traces increase voltage overshoot risk. Layout should minimize loop area between O1–O7, COMMON, and load return paths to reduce EMI and ensure clamp diode responsiveness.