BA6222 Motor Driver IC - Equivalent & Substitute Parts

Part Overview

The BA6222 is a brushed DC motor driver IC manufactured by Rohm Semiconductor, designed for general-purpose motor control applications. It integrates both control and power stages in a fully integrated solution with half-bridge output configuration and on/off interface control. The device operates across an 8V to 18V supply and load voltage range with 2A output current capability.

The BA6222 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

BA6222

Rohm SemiconductorIn Stock: 746BA6222 Datasheet

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TB6549FG(O,EL)

Toshiba Semiconductor and StorageIn Stock: 897TB6549FG(O,EL) Datasheet

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TB6549PG(O)

Toshiba Semiconductor and StorageIn Stock: 870TB6549PG(O) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BA6222 are identified based on the following critical parameters that determine functional compatibility:

Core Functional Requirements:

• Motor type: Brushed DC
• Output configuration: Half Bridge (2)
• Function: Fully integrated driver with control and power stage
• Application: General purpose motor control

Electrical Compatibility Criteria:

• Output current capability: Equal to or greater than 2A
• Supply voltage range: Must encompass or exceed the 8V ~ 18V requirement
• Load voltage range: Must encompass or exceed the 8V ~ 18V requirement

Physical and Compliance Criteria:

• Mounting type: Through hole preferred for direct replacement; surface mount acceptable with adapter consideration
• RoHS compliance: ROHS3 or equivalent
• Product status: Active preferred for long-term availability

The Toshiba TB6549 series (both TB6549FG(O,EL) and TB6549PG(O)) meets these substitution criteria. Both variants provide higher output current (4.6A), extended supply voltage range (10V ~ 27V), and active product status, ensuring superior performance and supply chain continuity compared to the obsolete BA6222.

Parameter Comparison

Engineering Selection Recommendations

TB6549PG(O) - Recommended Primary Substitute

The TB6549PG(O) is the preferred substitute for direct replacement applications. It maintains through-hole mounting compatibility with the BA6222, eliminating the need for adapter boards or PCB redesign. The 16-DIP package provides a familiar form factor for legacy system integration. As an active product from Toshiba, it ensures long-term availability and supply chain stability. The device exceeds BA6222 specifications in output current (4.6A vs. 2A) and supply voltage range (10V ~ 27V vs. 8V ~ 18V), providing enhanced performance margins. RoHS compliance is maintained.

TB6549FG(O,EL) - Alternative for New Designs

The TB6549FG(O,EL) is suitable for new design implementations where PCB layout can accommodate surface-mount technology. The 20-HSOP package with integrated heat tabs provides superior thermal management compared to the BA6222. This variant offers identical electrical specifications to TB6549PG(O) with the advantage of reduced board space. Active product status and RoHS compliance support long-term production requirements.

Compatibility Considerations

Both TB6549 variants introduce enhanced interface capabilities (PWM and serial control) compared to the BA6222's on/off interface. Existing designs utilizing only on/off control will operate without modification. Designs requiring advanced control features can leverage the additional interface options without hardware changes. The operating temperature range of the TB6549 series (-20°C ~ 85°C) is narrower than the BA6222 (-25°C ~ 125°C); applications requiring extended temperature operation below -20°C or above 85°C require thermal analysis or alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can TB6549PG(O) directly replace BA6222 without PCB modification?

A: Yes. The TB6549PG(O) uses 16-DIP through-hole packaging, compatible with BA6222 footprints. Pin-to-pin functional equivalence for half-bridge motor driver operation is maintained. No PCB redesign is required.

Q: What are the key differences between TB6549FG(O,EL) and TB6549PG(O)?

A: Both variants share identical electrical specifications (4.6A output, 10V ~ 27V supply/load voltage). The primary difference is packaging: TB6549FG(O,EL) uses 20-HSOP surface-mount with heat tabs, while TB6549PG(O) uses 16-DIP through-hole. Package selection depends on mounting technology and thermal requirements of the application.

Q: Why do substitute parts have higher output current (4.6A vs. 2A)?

A: The TB6549 series represents a more advanced design generation with improved power stage efficiency. Higher current capability provides design margin and supports higher motor power without thermal stress. Existing designs rated for 2A operation remain fully compatible.

Q: Are there interface compatibility concerns with PWM/Serial control on TB6549?

A: No. The TB6549 series supports both on/off control and advanced PWM/serial interfaces. Designs using only on/off control operate without modification. The additional interface options are available but not required.

Q: What is the impact of the narrower operating temperature range on TB6549?

A: The TB6549 operates from -20°C ~ 85°C (TA), compared to BA6222's -25°C ~ 125°C (TJ). For applications within -20°C to 85°C, no impact occurs. Applications requiring operation below -20°C or above 85°C require thermal analysis or alternative component selection.

Q: Are both TB6549 variants RoHS compliant?

A: Yes. Both TB6549FG(O,EL) and TB6549PG(O) are RoHS compliant, maintaining regulatory compliance equivalent to the BA6222 ROHS3 status.

Q: Which substitute should be selected for new production designs?

A: TB6549PG(O) is recommended for designs requiring through-hole compatibility. TB6549FG(O,EL) is preferred for new designs where surface-mount technology and compact board layout are priorities. Both ensure long-term supply availability as active products.