Toshiba Semiconductor and Storage TB9056FNG(O,EL)

Overview

TB9056FNG(O,EL) from Toshiba Electronic Devices & Storage Corporation is an automotive-grade LIN slave DC servo motor driver IC with integrated H-bridge, 8-bit potentiometer ADC, and on-chip voltage regulator (VREG). It delivers bidirectional motor control (CW/CCW), position feedback via VPBR analog input, LIN 1.3-compliant communication at up to 19.2 kbps, and embedded protection including ±1.5 A short-circuit detection, overtemperature shutdown (Tj max = 150°C), and overvoltage lockout (26 V typ.). It targets HVAC flap actuators, seat positioners, and mirror adjusters in passenger vehicles.

For engineers reviewing the TB9056FNG(O,EL) datasheet, TB9056FNG(O,EL) pinout, TB9056FNG(O,EL) application, or TB9056FNG(O,EL) equivalent, key selection criteria include LIN slave address configuration (ID0–ID3), baud rate selection (SEL0/SEL1), H-bridge R_ON (2.2 Ω typ.), standby current (≤10 μA), and operating supply range (7–18 V).

Technical Context

The TB9056FNG(O,EL) implements a dedicated LIN 1.3 slave protocol stack with hardware-level Synch Break/ID/Data/Checksum field parsing and automatic baud rate adjustment based on internal CR oscillator timing. Its motor control logic compares 8-bit AD-converted potentiometer position (VPBR) against received target command value (DATA1) and drives MT1/MT2 outputs using PWM-controlled H-bridge with configurable maximum duty ratio (4/16 to 16/16).

Protection circuitry operates autonomously: short-circuit detection triggers at ±1.5 A (typ.), overtemperature shutdown activates at T_j ≥ 150°C, and overvoltage protection engages when V_CC ≥ 26 V (typ.). The device supports up to 16 nodes per LIN bus via hardware-configurable slave ID (ID0–ID3) and enters ultra-low-power standby (≤10 μA) after 25,000 bit times of BUS inactivity.

Key Specifications

Pinout & Package

Package: SSOP-24 (3.0 × 8.2 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive LIN servo motor driver applications.

Compared with TLE9201SG and MC33816, TB9056FNG(O,EL) delivers the highest level of functional integration for cost-sensitive, single-axis LIN servo applications - combining LIN PHY, position ADC, 5 V regulator, and protected H-bridge in one SSOP-24 package without external support components.

Availability

TB9056FNG(O,EL) is available at Aetrix Electronics and suitable for automotive HVAC actuation, power seat positioning, electric mirror adjustment, and steering column control requiring stable component supply across production lifecycles.

Supply support for TB9056FNG(O,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 high-reliability semiconductor solutions for automotive, industrial, and consumer applications, with emphasis on power efficiency and functional safety.

TB9056FNG(O,EL) belongs to Toshiba's automotive LIN motor driver product line, engineered specifically for cost-effective, single-chip closed-loop DC servo control in body electronics - eliminating external transceivers, regulators, and ADCs.

FAQ

What LIN protocol version does TB9056FNG(O,EL) support?

TB9056FNG(O,EL) fully complies with LIN 1.3 Protocol Specification, including hardware-based Synch Break detection, ID field parity checking (P0/P1), checksum validation, and automatic baud rate adjustment. It does not support LIN 2.x features such as configurable frame response or diagnostic services beyond basic data transmission - its implementation is optimized for deterministic position-control messaging in automotive body networks.

How is the slave node ID configured on TB9056FNG(O,EL)?

The slave node ID for TB9056FNG(O,EL) is set by hardwiring ID0–ID3 pins (pins 3–6) to GND (logic 0) or leaving them open (logic 1), enabling 16 unique addresses (0–15). Each combination maps to a specific ID field in the LIN header per Table 7.4; no firmware programming or EEPROM is involved. This hardware-based addressing ensures deterministic boot behavior and eliminates configuration errors in mass production.

Does TB9056FNG(O,EL) require an external LIN transceiver?

No, TB9056FNG(O,EL) integrates the LIN physical layer directly: the BUS pin (pin 24) includes internal 30 kΩ pull-up and supports direct connection to the LIN bus wire without an external transceiver. This reduces bill-of-materials cost and PCB footprint - a key differentiator versus alternatives like TLE9201SG that mandate external LIN PHY components.

What is the function of the VPBR pin on TB9056FNG(O,EL)?

The VPBR pin (pin 13) is the analog input for the potentiometer wiper voltage, featuring an internal 2.5 MΩ pull-up resistor. TB9056FNG(O,EL) digitizes this signal using its on-chip 8-bit ADC to obtain real-time motor shaft position - forming the feedback path for closed-loop servo control. No external op-amp or ADC is needed, simplifying sensor interface design in space-constrained automotive actuators.

How does TB9056FNG(O,EL) handle motor stall or overload conditions?

TB9056FNG(O,EL) detects motor stall or overload via its driver short-circuit protection circuit, which triggers at ±1.5 A (typical) current through MT1/MT2. Upon detection, it disables the H-bridge outputs and sets the overcurrent flag (D0 in transmitted DATA2). Recovery requires either a clear-command (D0 = 1 in received DATA2) or a new position command - ensuring safe thermal management without external current-sense resistors or monitoring ICs.