motor-drivers

TB67H450

Full part number: TB67H450FNG

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Toshiba datasheet covers the TB67H450FNG, a PWM chopper DC brushed motor driver in the TB67H450 series. Designed for high-voltage and large-current applications, it features a monolithic BiCD process IC with an embedded output block. Key parameters include a 50V output voltage rating, 3.5A maximum current, and a combined on-resistance of 0.6Ω. The device supports four operation modes: Forward, Reverse, Brake, and Stop. It includes built-in error detection functions like thermal shutdown, overcurrent detection, and under-voltage lockout, along with an internal VCC regulator. Packaged in HSOP8, this component is ideal for precise motor control requiring robust protection and efficient power handling.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
output voltage — — 50 V —
output current — — 3.5 A (Note 1)
supply voltage range 4.5 V — 44 V
rds on — 600 mOhm 800 mOhm Tj = 25°C, Forward direction(High side + low side)Iout = 1.5 A
operating temperature -40 °C — 85 °C —
power dissipation — — 2.85 W (Note 2)
propagation delay — 500 ns — IN1 and IN2 - OUT
rise time 30 ns 60 ns 120 ns —
fall time 40 ns 80 ns 160 ns —
driver count — 1 —
03 — Alternatives

Closest matches to TB67H450

TB67H451AFNG similar fall time, similar operating temperature, similar output current
TB67S109AFNG 2.3× lower output current, 2.0× higher propagation delay, 1.3× higher rise time
DRV8803DW 4.4× lower output current, 2.9× higher rise time, 2.4× higher operating temperature
DRV8803PWPR 2.9× higher rise time, 2.2× higher fall time, 1.6× higher propagation delay
A4988 2.3× lower output current, 1.9× lower rds on, 1.4× higher operating temperature
SZNUD3160LT1G 7.0× higher power dissipation, 1.9× higher operating temperature, 1.2× higher supply voltage range
L298N 1.8× lower output current, 1.3× lower supply voltage range
TB6612FNG 8.1× lower supply voltage range, 7.8× higher operating temperature, 3.7× lower power dissipation
04 — FAQ

Frequently asked questions

What is the driver count for the TB67H450FNG?

The driver count is 1.

What is the fall time of the TB67H450FNG?

The fall time is 80 ns.

What is the operating temperature of the TB67H450FNG?

The operating temperature is 85 °C.

What is the output current?

The output current is 3.5 A (Note 1).

What is the output voltage?

The output voltage is 50 V.

What is the power dissipation of the TB67H450FNG?

The power dissipation is 2.85 W (Note 2).

What is the propagation delay from IN1 and IN2 to OUT?

The propagation delay from IN1 and IN2 to OUT is 500 ns.

What is the rds on value for the TB67H450FNG at Tj = 25°C, Forward direction(High side + low side)Iout = 1.5 A?

The rds on value is 600 mOhm at Tj = 25°C, Forward direction(High side + low side)Iout = 1.5 A.

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