AM4953GSTR-G1 Equivalent & Substitute Parts

Part Overview

The AM4953GSTR-G1 is a fully integrated motor driver IC manufactured by Diodes Incorporated, designed for brushed DC motor applications. This device operates across a supply voltage range of 2.2V to 16V and delivers up to 800mA output current in a half-bridge configuration with parallel interface control. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

AM4953GSTR-G1

Diodes IncorporatedIn Stock: 1543AM4953GSTR-G1 Datasheet

Current PartRFQ

BA6845FS-E2

Rohm SemiconductorIn Stock: 35235BA6845FS-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM4953GSTR-G1 is determined by the following critical parameters:

• Motor Driver Type: Fully integrated bipolar motor driver with control and power stage
• Output Configuration: Half-bridge topology with two independent outputs
• Interface Control: Parallel logic interface
• Output Current Capability: Minimum 800mA sustained current
• Supply Voltage Range: Overlap with 2.2V to 16V operating window
• Load Voltage Range: Compatibility with 2.2V to 16V motor supply
• Mounting Technology: Surface mount package
• Compliance: ROHS3 and REACH compliance maintained

The BA6845FS-E2 qualifies as a functional equivalent based on matching core driver architecture, output configuration, interface type, and compliance certifications. However, differences in voltage rating, current capability, temperature range, and package form factor must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The BA6845FS-E2 is available as an active product from Rohm Semiconductor with established supply chain availability, addressing the obsolescence status of the AM4953GSTR-G1. Both devices maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements.

Selection of BA6845FS-E2 requires verification of the following application constraints:

• Supply Voltage Compatibility: The BA6845FS-E2 operates within 2.7V to 9V, which is a subset of the AM4953GSTR-G1 range. Applications requiring supply voltages above 9V or below 2.7V cannot use this substitute.
• Temperature Operating Range: The BA6845FS-E2 supports -25°C to 75°C, which is narrower than the AM4953GSTR-G1 range of -40°C to 105°C. Applications requiring extended temperature operation must confirm compatibility.
• Output Current: The BA6845FS-E2 provides 1A output current, exceeding the 800mA specification of the AM4953GSTR-G1, providing design margin for current-limited applications.
• Package Footprint: The BA6845FS-E2 uses a 16-LSOP package versus the 10-SOP package of the AM4953GSTR-G1, requiring PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can the BA6845FS-E2 directly replace the AM4953GSTR-G1 without circuit modification?

A: Direct replacement requires verification of three conditions: (1) supply voltage remains within 2.7V to 9V range, (2) operating temperature stays within -25°C to 75°C, and (3) PCB layout accommodates the larger 16-LSOP package. If any condition is not met, circuit redesign is necessary.

Q: What is the primary difference between these two motor drivers?

A: The AM4953GSTR-G1 is optimized for brushed DC motors with extended voltage range (2.2V to 16V) and temperature range (-40°C to 105°C). The BA6845FS-E2 is designed for bipolar stepper motors with narrower voltage (2.7V to 9V) and temperature (-25°C to 75°C) specifications. Motor type compatibility must be confirmed for your application.

Q: Are there pin-to-pin compatibility considerations?

A: No. The AM4953GSTR-G1 uses a 10-pin package while the BA6845FS-E2 uses a 16-pin package. Pin assignments differ and require schematic and layout redesign. Consult device datasheets for pinout details.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the AM4953GSTR-G1 and BA6845FS-E2 are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status for applications requiring these certifications.

Q: Which applications are suitable for the BA6845FS-E2 as a substitute?

A: The BA6845FS-E2 is suitable for brushed DC motor applications operating within 2.7V to 9V supply range and -25°C to 75°C temperature range. Applications exceeding these limits require alternative solutions.