Toshiba Semiconductor and Storage TCB010FNG

Overview

TCB010FNG from Toshiba Electronic Devices & Storage Corporation is a system regulator IC for car audio applications, integrating five power supply outputs (VDD: 3.3 V/300 mA, CAN: 5 V/200 mA, AUDIO: 3.3 V/1.3 A, DECK: 5–8.5 V/2 A, ILM: 4.5–8.5 V/400 mA) and two high-side switches (ANT: 500 mA, AMP: 200 mA), with built-in +B/ACC detection, thermal shutdown, over-voltage protection, RESET and MUTE signal generation.

For engineers reviewing the TCB010FNG datasheet, TCB010FNG pinout, TCB010FNG application, or TCB010FNG equivalent, this page delivers verified specifications, validated pin functions, automotive-grade protection features, and real-world car audio subsystem integration guidance - including voltage setting resistors for DECK/ILM, timing capacitor dependencies for RESET/MUTE, and thermal design constraints for multi-output operation.

Technical Context

The TCB010FNG implements a monolithic CMOS linear regulator architecture with independent control loops per output channel, supporting simultaneous regulation of fixed- and variable-voltage rails. Its integrated ACCDET/BuDET comparators use precision resistor-divider inputs with 300 mV hysteresis, while RESET generation relies on VDD under-voltage detection at 2.95 V (typ.) with 100 ms power-on-reset delay via external CT capacitor.

Thermal management is coordinated across all regulators: MUTE output asserts low at 165°C (±20°C) to signal amplifier attenuation, and full regulator shutdown (except VDD/CAN) occurs if temperature rises further by ~5°C; recovery initiates at 30°C (±10°C). Over-voltage protection (27.2 V typ.) applies to all outputs except VDD and CAN, and each high-side switch includes current-limiting foldback protection.

Key Specifications

Pinout & Package

P-HSSOP36-1116-0.65-001 package: 36-pin heat-sinked exposed-tab HSSOP with θ_j-T = 1.8°C/W, requiring external heatsink for >69.5 W total dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar system regulator applications.

Compared with BD95841MUV and TPS65381A-Q1, the TCB010FNG uniquely integrates five regulated outputs (including two adjustable rails), two high-side switches, and automotive-specific detection logic in one package - making it irreplaceable for complete car audio power architecture consolidation.

Availability

TCB010FNG is available at Aetrix Electronics and suitable for car audio head units, amplifier modules, rear-view camera systems, and tuner/antenna subsystems requiring stable component supply, automotive-grade thermal robustness, and integrated voltage monitoring.

Supply support for TCB010FNG 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 management, motor control, and optical devices.

The TCB010FNG belongs to Toshiba's automotive system regulator product line, engineered specifically to consolidate power delivery, voltage monitoring, and sequencing control for modern car audio platforms - reducing design complexity and improving functional safety margins.

FAQ

What is the maximum allowable input voltage for TCB010FNG during surge conditions?

The TCB010FNG supports +50 V surge (200 ms) on VIN and VSYS pins per ISO 7637-2 Pulse 5a. For impulse conditions (100 ms), the limit is +35 V. These ratings assume proper external clamping - such as a power Zener diode or choke coil - is implemented on the input line. Exceeding these values risks permanent damage, as the absolute maximum static rating is 30 V.

How is the output voltage of the DECK regulator set on TCB010FNG?

The DECK output voltage on TCB010FNG is set externally using a resistor divider connected to FB_DECK. The internal reference is 0.8 V (typ.), so V_DECK = 0.8 V × (R_a + R_b) / R_b. For example, to achieve 7 V output, select R_a = 77.5 kΩ and R_b = 10 kΩ. The output range is 5–8.5 V, with 2 A capability at 7 V and thermal derating above that point.

Does TCB010FNG provide reverse battery protection?

No, the TCB010FNG does not include reverse battery protection. External protection - such as a Schottky diode on the VSYS pin - is required to prevent reverse-current flow from VDD to battery during momentary disconnection. The datasheet explicitly recommends inserting a diode at the VSYS pin for this purpose, as reverse conduction could damage internal regulators or compromise backup functionality.

Can the AMP and ANT high-side switches on TCB010FNG be used simultaneously with full load?

Yes, the AMP (200 mA) and ANT (500 mA) high-side switches on TCB010FNG can operate simultaneously, but total power dissipation must remain within the IC's 69.5 W thermal limit. At maximum load (700 mA combined), dropout voltages (0.4–1.0 V) generate up to ~0.7 W additional loss. Thermal design - including heatsink sizing per θ_HS = (150°C − T_a)/P_Dmax − 1.8°C/W - must account for cumulative losses from all active regulators and switches.

What happens to the TCB010FNG outputs during thermal shutdown?

During thermal shutdown, the TCB010FNG asserts MUTE low and disables all regulators except VDD and CAN to preserve core system functionality. If temperature continues rising ~5°C beyond the initial 165°C trip point, remaining non-critical outputs (DECK, ILM, AUDIO, AMP, ANT) shut down completely. Recovery begins only after junction temperature falls to 30°C (±10°C), at which point all regulators restart in sequence, respecting CNT pin control states.