AP1034AER Equivalent & Substitute Parts

Part Overview

The AP1034AER is a bipolar motor driver IC manufactured by Asahi Kasei Microdevices (AKM), classified as a Power Management PMIC. This fully integrated driver combines control and power stage functionality in a 24-QFN (4x4) surface mount package, designed for stepper motor applications with step resolution options of 1, 1/2, 1/4, and 1/8. The device operates across a supply voltage range of 8V to 35V with a maximum output current of 2A per channel. The AP1034AER is currently classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

AP1034AER

Asahi Kasei Microdevices/AKMIn Stock: 963AP1034AER Datasheet

Current PartRFQ

AP1037AER

Asahi Kasei Microdevices/AKMIn Stock: 1366AP1037AER Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The AP1037AER qualifies as a parametric equivalent to the AP1034AER based on the following critical substitution criteria:

Matching Parameters:

• Identical manufacturer (Asahi Kasei Microdevices)
• Identical motor driver category and function (Bipolar stepper, fully integrated control and power stage)
• Identical output configuration (Half Bridge with 4 channels)
• Identical interface technology (Power MOSFET Logic)
• Identical step resolution capability (1, 1/2, 1/4, 1/8)
• Identical supply and load voltage range (8V ~ 35V)
• Identical operating temperature range (-30°C ~ 150°C TJ)
• Identical package type (24-WFQFN Exposed Pad, 24-QFN 4x4)
• Identical mounting type (Surface Mount)
• Identical compliance certifications (ROHS3, MSL 3)

Distinguishing Parameter:

• Output current rating: AP1034AER rated at 2A; AP1037AER rated at 1.5A

The AP1037AER is suitable as a substitute where the application current requirement does not exceed 1.5A per output channel.

Parameter Comparison

Engineering Selection Recommendations

Both the AP1034AER and AP1037AER are classified as obsolete products. Selection between these parts should be based on application current requirements and component availability.

The AP1034AER, with its 2A output current rating, is suitable for applications requiring maximum current delivery per channel. The AP1037AER, rated at 1.5A, is suitable for lower-current stepper motor applications.

Both parts maintain identical ROHS3 compliance and MSL 3 moisture sensitivity specifications, ensuring equivalent environmental and regulatory compliance. The identical package footprint (24-WFQFN Exposed Pad) and mounting type (Surface Mount) allow for direct PCB layout compatibility without redesign.

Selection should prioritize component availability and application current requirements as the primary differentiators.

Frequently Asked Questions (FAQ)

Q: Can the AP1037AER directly replace the AP1034AER in existing designs?

A: Direct replacement is possible only if the application current requirement per output channel does not exceed 1.5A. The AP1037AER has a lower maximum output current rating (1.5A vs. 2A). If the design operates at or near the 2A limit, substitution is not recommended.

Q: Are the package footprints identical between AP1034AER and AP1037AER?

A: Yes. Both parts use the 24-WFQFN Exposed Pad package with identical 4x4mm dimensions. No PCB layout modifications are required for physical substitution.

Q: Do both parts support the same step resolution options?

A: Yes. Both the AP1034AER and AP1037AER support identical step resolution configurations: 1, 1/2, 1/4, and 1/8 stepping.

Q: What is the primary difference between these two parts?

A: The primary difference is the maximum output current rating. The AP1034AER is rated for 2A per channel, while the AP1037AER is rated for 1.5A per channel. All other electrical and mechanical specifications are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP1034AER and AP1037AER are ROHS3 compliant with identical Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours).

Q: What voltage range do these motor drivers support?

A: Both parts operate with supply and load voltages ranging from 8V to 35V, with an operating junction temperature range of -30°C to 150°C.