Toshiba Semiconductor and Storage TB67Z800FTG,EL

Overview

TB67Z800FTG from Toshiba Electronic Devices & Storage Corporation is a 3-channel half-bridge motor driver IC designed for brushless DC (BLDC) motor control in compact industrial and consumer systems. It delivers up to 3 A per channel, operates from 4.0 V to 22 V VM supply, and integrates independent high-/low-side gate control (UH/UL, VH/VL, WH/WL), overcurrent protection (ISD), thermal shutdown (TSD), and under-voltage lockout (UVLO). It is used in compact fan modules, small pumps, and precision positioning actuators.

For engineers reviewing the TB67Z800FTG datasheet, TB67Z800FTG pinout, TB67Z800FTG application, or TB67Z800FTG equivalent, this page provides verified functional roles, validated pin assignments, confirmed protection thresholds (165°C TSD, 4.5 A ISD trip), real-world thermal design guidance (E-PAD grounding), and direct alternative part comparisons for BLDC driver selection.

Technical Context

The TB67Z800FTG implements three independent half-bridge output stages with integrated N-channel high-side and low-side power MOSFET drivers. Each channel accepts complementary PWM inputs (e.g., UH/UL) with 3-clock-cycle dead-time insertion (9 MHz internal oscillator) to prevent shoot-through. Control logic remains active only when VM ≥ 3.7 V and VREG ≥ 3.2 V, enforced by dual UVLO circuits with hysteresis.

Protection functions operate autonomously: ISD monitors current via RS pins and forces Hi-Z output after configurable recovery time (set by TRE capacitor); TSD disables all outputs at 165°C junction temperature with 15°C hysteresis; both ISD_OUT and TSD_OUT signal open-drain fault flags. The VREG pin supplies a regulated 5.0 V (±0.5 V) reference for external logic or level-shifting.

Key Specifications

Pinout & Package

P-VQFN36-0505-0.50-001 package: 5.0 mm × 5.0 mm body, 0.50 mm pitch, 36-pin quad flat no-lead with exposed thermal pad (E-PAD: 3.4 mm × 3.4 mm). E-PAD and four corner pads must be soldered to GND plane for thermal management and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-channel half-bridge driver applications.

Compared with STSPIN32F0A and DRV8313, the TB67Z800FTG offers plug-and-play half-bridge control without MCU overhead or external protection components-ideal for cost-sensitive, space-constrained BLDC systems needing guaranteed fault response and 5 V regulation.

Availability

TB67Z800FTG is available at Aetrix Electronics and suitable for compact BLDC fan modules, small industrial pumps, automated office printers, robotic end-effector actuators, and precision positioning stages requiring stable component supply across production lifecycles.

Supply support for TB67Z800FTG 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 high-reliability semiconductor solutions for industrial, automotive, and consumer applications, with expertise in power management and motor control ICs.

The TB67Z800FTG belongs to Toshiba's Bi-CD family of monolithic motor drivers, engineered specifically for space-constrained BLDC systems requiring integrated protection, precise timing, and simplified layout-targeting applications where discrete driver + protection ICs increase cost and complexity.

FAQ

What is the maximum continuous output current per channel for the TB67Z800FTG?

The TB67Z800FTG supports 3 A continuous output current per channel under specified thermal conditions (Ta ≤ 85°C, 4-layer board with adequate copper pour). This rating assumes proper E-PAD grounding and use within the 4.0 V–22 V VM range. At elevated ambient temperatures or reduced copper area, derating applies-consult the package power dissipation curve (PD vs. Ta) in the datasheet for precise limits.

How does the TB67Z800FTG implement dead-time control between high-side and low-side switches?

The TB67Z800FTG uses an internal 9 MHz oscillator to enforce a fixed 3-clock-cycle delay (≈333 ns) between complementary input transitions (e.g., UH rising and UL falling). This hardware-based dead-time prevents shoot-through without external timing components or MCU intervention, ensuring robust operation across voltage and temperature ranges.

Can the TB67Z800FTG operate from a 5 V motor supply, and what impact does that have on performance?

Yes, the TB67Z800FTG operates from 4.0 V to 22 V VM, including 5 V systems. At VM = 5 V, the VREG output drops to 3.9 V (min), and R_ON increases slightly (0.33 Ω typ. vs. 0.3 Ω at 12 V), but full functionality-including ISD, TSD, and UVLO-is retained. Designers should verify motor torque requirements at low VM due to reduced gate drive headroom.

What is the purpose of the TRE pin on the TB67Z800FTG, and how is it configured?

The TRE pin on the TB67Z800FTG sets the auto-recovery time after an overcurrent (ISD) event. A capacitor (e.g., 1 μF) connected between TRE and GND configures the delay-calculated as T ≈ 9.9 s for 1 μF. This allows system-level tuning of fault hold-off duration without firmware changes, supporting mechanical jam recovery or transient overload tolerance.

How many ground connections does the TB67Z800FTG require, and why are they distributed across so many pins?

The TB67Z800FTG has 15 dedicated ground terminals (G1–G13 plus two GND pins), all electrically tied internally. This distribution minimizes ground loop impedance, suppresses switching noise coupling, and improves thermal conduction from the die through the E-PAD. Proper soldering of all GND pins to a solid PCB ground plane is mandatory for achieving rated 3 A current and thermal shutdown accuracy.