Toshiba Semiconductor and Storage TB62262FTG,EL

Overview

TB62262FTG from Toshiba Electronic Devices & Storage Corporation is a BiCD-process monolithic PWM chopper-controlled bipolar stepping motor driver IC for two-phase motors, delivering 1.4 A (typ.) continuous output current at up to 38 V VM supply, with full/half/quarter-step resolution and integrated thermal (TSD) and overcurrent (ISD) protection - deployed in precision motion control for industrial automation actuators.

For engineers reviewing the TB62262FTG datasheet, TB62262FTG pinout, TB62262FTG application, or TB62262FTG equivalent, key selection considerations include its QFN48 package thermal design, dual-channel current-sense resistor interface (RSA/RSB), OSCM-based chopper frequency tuning (40–150 kHz), and clock-in step sequencing with CW/CCW direction control.

Technical Context

The TB62262FTG implements a three-mode PWM current regulation architecture (CHARGE/SLOW/FAST) per H-bridge leg, using external VREF and sense resistors to set peak current (e.g., 1.18 A with VREF = 3.0 V, R_S = 0.51 Ω). Its internal oscillator (OSCM) sets chopper frequency via external RC network (f_chop = f_OSCM/16), with typical 100 kHz operation enabling low-current ripple while balancing gate loss and thermal rise.

Control logic accepts TTL-compatible CLK edges for step advancement, DMODE1/DMODE2 for resolution selection (full/half/quarter/standby), and RESET for electrical angle initialization. Built-in VCC regulator (4.75–5.25 V), POR, and error flag outputs (MO) support robust system-level integration without external supervision circuitry.

Key Specifications

Pinout & Package

P-WQFN48-0707-0.50-003: 7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad - requires PCB GND connection on all four corners and center pad for effective heat dissipation (R_θJA = 10.4 mW/°C derating above 25°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bipolar stepping motor driver applications.

Compared with STSPIN220TR and MP6500DS-LF-Z, the TB62262FTG offers unique hardware-selectable step resolution, dual independent VREF inputs for asymmetric current tuning, and user-adjustable chopper frequency - making it optimal for applications demanding precise current control, flexible microstepping, and thermal-aware motor drive tuning.

Availability

TB62262FTG is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pump actuation, automated optical inspection (AOI), and 3D printer extruder control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TB62262FTG 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 analog and power ICs for industrial, automotive, and consumer applications, with emphasis on thermal robustness and functional safety.

The TB62262FTG belongs to Toshiba's BiCD-based motor driver product line, engineered specifically for cost-sensitive, thermally constrained bipolar stepper applications requiring integrated protection and flexible microstepping without external controllers.

FAQ

What is the maximum continuous output current supported by the TB62262FTG?

The TB62262FTG delivers 1.4 A (typical) continuous output current per channel under standard operating conditions (Ta = 25°C, VM = 24 V). Absolute maximum rating is 1.8 A, but sustained operation above 1.4 A requires careful thermal design - including PCB copper area, exposed pad soldering, and ambient airflow - to keep junction temperature below 120°C. The actual usable current depends on board layout and cooling capability.

How does the TB62262FTG implement microstepping, and what resolutions are supported?

The TB62262FTG supports full-step, half-step, and quarter-step microstepping via hardware configuration of DMODE1 and DMODE2 pins. It does not use software interpolation; instead, internal logic generates precise current waveforms for each resolution. Full step yields 200 steps/rev (1.8°), half step 400 steps/rev (0.9°), and quarter step 800 steps/rev (0.45°) for standard 1.8° stepper motors - all with <5% motor current setting accuracy.

Can the TB62262FTG be used with 3.3 V logic-level microcontrollers?

Yes, the TB62262FTG accepts 3.3 V logic inputs reliably: its VIN(H) threshold is 2.0 V (min), and VIN(L) is 0.8 V (max), fully compatible with standard 3.3 V CMOS outputs. All control pins - CLK, ENABLE, RESET, CW/CCW, DMODE1, DMODE2 - operate within this range. No level-shifting circuitry is needed, simplifying interface design with modern low-voltage MCUs.

What is the purpose of the OSCM pin on the TB62262FTG, and how is it configured?

OSCM sets the internal chopper oscillator frequency via an external RC network (e.g., 270 pF capacitor + 3.6 kΩ resistor yields ~1.6 MHz OSCM, resulting in ~100 kHz chopper frequency). This allows designers to optimize the trade-off between current ripple (lower at higher f_chop) and gate switching losses (higher at higher f_chop). The TB62262FTG's OSCM pin gives direct hardware control over chopper behavior - unlike fixed-frequency alternatives - enabling application-specific thermal and acoustic tuning.

Does the TB62262FTG provide diagnostic feedback, and how is it accessed?

Yes, the TB62262FTG provides real-time fault diagnostics through the MO (Monitor Output) pin - an open-drain output that pulls low during thermal shutdown (TSD) or overcurrent shutdown (ISD) events. This signal can be read by a host MCU to trigger safe-stop sequences or log error conditions. MO requires an external pull-up resistor (10–100 kΩ to VCC) and operates independently of ENABLE state, ensuring visibility even during output disable.