APM8600FB-7 Equivalent & Substitute Parts

Part Overview

The APM8600FB-7 is a single-cell lithium ion/polymer battery charger IC manufactured by Diodes Incorporated in a 14-UFDFN exposed pad package. This component provides constant-current, programmable charging with integrated over-temperature and over-voltage protection. The part is currently obsolete, making equivalent substitutes necessary for new designs or production continuity. Substitute parts must maintain compatibility with the core charging parameters: single-cell lithium chemistry, 4.2V battery pack voltage, programmable current control, and equivalent thermal protection features.

Substiute Parts

APM8600FB-7

Diodes IncorporatedIn Stock: 1003APM8600FB-7 Datasheet

Current PartRFQ

BQ24109RHLR

Texas InstrumentsIn Stock: 11849BQ24109RHLR Datasheet

MFR RecommendedRFQ

MAX8606ETD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3793MAX8606ETD+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core parameters:

• Battery chemistry and cell count (must be Lithium Ion/Polymer, single-cell)
• Battery pack voltage (must be 4.2V)
• Charging mode (must support constant-current, programmable operation)
• Fault protection features (must include over-temperature and over-voltage protection)
• Operating temperature range (must support -40°C ~ 85°C minimum)
• RoHS compliance status

The identified substitute parts meet these criteria with the following considerations:

BQ24109RHLR (Texas Instruments): Supports single-cell lithium charging at 4.2V with programmable current and timer functions. Provides equivalent thermal and voltage protection. Active product status ensures ongoing availability and support.

MAX8606ETD+T (Analog Devices Inc./Maxim Integrated): Supports single-cell lithium charging at 4.2V with programmable current control and integrated over-temperature/over-voltage protection. Active product status with established supply chain.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with ROHS3 compliance, ensuring regulatory alignment and long-term supply availability compared to the obsolete APM8600FB-7.

BQ24109RHLR is suitable for applications requiring higher maximum charge current (2A) and higher input supply voltage tolerance (16V maximum). The part supports both current and timer programmability, matching the original feature set. Package change from 14-UFDFN to 20-VFQFN requires PCB layout modification.

MAX8606ETD+T maintains the original 1A maximum charge current specification and provides the closest package footprint compatibility with a 14-pin WFDFN package. Supply voltage maximum is 5.5V, which is lower than the original 7V specification. Programmable features are limited to current control without timer functionality. USB interface support is included.

Selection between these substitutes depends on application-specific requirements for charge current capacity, input voltage range, programmable features, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can BQ24109RHLR be used as a direct replacement for APM8600FB-7?

A: BQ24109RHLR meets all core functional requirements for single-cell lithium charging at 4.2V with programmable current and timer control. However, the package changes from 14-UFDFN to 20-VFQFN, requiring PCB redesign. The higher maximum charge current (2A vs. 1A) and input voltage rating (16V vs. 7V) provide additional capability margins.

Q: What are the package differences between the substitute parts?

A: APM8600FB-7 uses 14-UFDFN (3x3mm). BQ24109RHLR uses 20-VFQFN (4.6x4.5mm). MAX8606ETD+T uses 14-WFDFN (3x3mm). The MAX8606ETD+T maintains the original 14-pin count and similar footprint, while BQ24109RHLR requires a larger package footprint.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both BQ24109RHLR and MAX8606ETD+T are ROHS3 compliant, matching the original APM8600FB-7 compliance status.

Q: What is the key difference in programmable features between the substitutes?

A: APM8600FB-7 and BQ24109RHLR both support programmable current and timer functions. MAX8606ETD+T supports programmable current control only, without timer programmability.

Q: Which substitute is better for low-voltage input applications?

A: MAX8606ETD+T has a maximum supply voltage of 5.5V, making it suitable for applications with tightly constrained input voltage. BQ24109RHLR supports up to 16V input, providing greater flexibility for higher-voltage supply designs.