AP65111AWU-7 Equivalent & Substitute Parts

Part Overview

The AP65111AWU-7 is a buck switching regulator IC from Diodes Incorporated, designed for positive adjustable output applications. It delivers 1.5A output current with an adjustable output voltage range from 0.8V to 14.72V, operating from a 4.5V to 18V input supply. The device is packaged in SOT-23-6 Thin (TSOT-23-6) form factor and operates across the industrial temperature range of -40°C to 85°C.

The AP65111AWU-7 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

AP65111AWU-7

Diodes IncorporatedIn Stock: 24118AP65111AWU-7 Datasheet

Current PartRFQ

AP62200WU-7

Diodes IncorporatedIn Stock: 150368AP62200WU-7 Datasheet

MFR RecommendedRFQ

RT6212AHGJ6F

Richtek USA Inc.In Stock: 45876RT6212AHGJ6F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP65111AWU-7 are identified based on the following critical parameters that determine functional compatibility:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Output Voltage Range: Minimum 0.8V adjustable output capability
• Package: SOT-23-6 Thin (TSOT-23-6) form factor for direct PCB compatibility
• Operating Temperature: -40°C to 85°C industrial range
• Synchronous Rectifier: Integrated synchronous rectification capability
• Input Voltage Range: 4.5V minimum to 18V maximum input support

The identified substitutes meet or exceed these core parameters. Output current capability may be higher in substitutes, which is acceptable for drop-in replacement applications. Switching frequency variations within the 500kHz to 740kHz range do not preclude substitution for standard buck regulator applications.

Parameter Comparison

Engineering Selection Recommendations

AP62200WU-7 (Diodes Incorporated)

The AP62200WU-7 is an active product from the same manufacturer as the obsolete AP65111AWU-7. It provides 2A output current capability compared to the original 1.5A, supporting higher load requirements. The output voltage range is constrained to 0.8V to 7V, which is suitable for applications requiring output voltages within this specification. The device maintains identical operating temperature range, package form factor, and RoHS3 compliance. The higher switching frequency of 740kHz may reduce external component size in certain applications. Moisture sensitivity level remains at MSL 1, indicating unlimited shelf life.

RT6212AHGJ6F (Richtek USA Inc.)

The RT6212AHGJ6F is an active product from Richtek USA Inc., part of the ACOT™ series. It delivers 2A output current with an extended output voltage range of 0.8V to 15.48V, accommodating a broader range of application requirements. The switching frequency matches the original AP65111AWU-7 at 500kHz. The device maintains identical operating temperature range and package form factor. RoHS3 compliance is confirmed. Moisture sensitivity level is MSL 3 (168 hours), requiring controlled storage conditions compared to the MSL 1 rating of the original part.

Both substitutes are active products with established supply availability, supporting long-term design continuity.

Frequently Asked Questions (FAQ)

Q: Can the AP62200WU-7 replace the AP65111AWU-7 in all applications?

A: The AP62200WU-7 is compatible with applications requiring output voltages between 0.8V and 7V. If your design requires output voltages above 7V, the AP62200WU-7 is not suitable. Verify your application's output voltage requirement against the 0.8V to 7V specification before selection.

Q: What is the advantage of the higher 2A output current in the substitute parts?

A: The AP62200WU-7 and RT6212AHGJ6F both provide 2A output current, compared to the original 1.5A. This higher current capability allows the same devices to support higher load currents or provides design margin for applications originally designed for 1.5A. The devices will operate within specification at lower current levels, making them suitable for drop-in replacement.

Q: Are there package compatibility concerns between the main part and substitutes?

A: All three devices use the SOT-23-6 Thin (TSOT-23-6) package. Pin-to-pin compatibility is maintained, allowing direct PCB layout reuse without modification.

Q: What is the difference in switching frequency between these parts?

A: The AP65111AWU-7 and RT6212AHGJ6F operate at 500kHz, while the AP62200WU-7 operates at 740kHz. Higher switching frequency typically allows for smaller external filter components but may increase switching losses. For standard buck regulator applications, both frequencies are acceptable.

Q: Does moisture sensitivity level affect part selection?

A: The AP65111AWU-7 and AP62200WU-7 have MSL 1 (unlimited shelf life), while the RT6212AHGJ6F has MSL 3 (168-hour floor life after moisture exposure). If your supply chain or storage conditions involve extended shelf periods, MSL 1 rated parts are preferred. MSL 3 parts require controlled storage and handling procedures.

Q: Are all substitutes RoHS3 compliant?

A: Yes. The AP65111AWU-7, AP62200WU-7, and RT6212AHGJ6F are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

Q: Which substitute should I select for new designs?

A: For new designs, select based on your specific output voltage requirement. If output voltage must exceed 7V, use the RT6212AHGJ6F. If output voltage is within 0.8V to 7V range, either the AP62200WU-7 or RT6212AHGJ6F is acceptable. Both are active products with established supply chains.