RT9469WSC Equivalent & Substitute Parts

Part Overview

The RT9469WSC is an active, production-status lithium-ion/polymer battery charger IC manufactured by Richtek USA Inc. This single-cell charger integrates programmable current and voltage control with comprehensive fault protection including over-current, over-temperature, over-voltage, reverse battery, and short-circuit detection. The device operates across -40°C to 85°C and communicates via I2C interface. Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain disruptions, or application-specific requirements that align with alternative charger specifications.

Substiute Parts

RT9469WSC

Richtek USA Inc.In Stock: 4033RT9469WSC Datasheet

Current PartRFQ

RT9460WSC

Richtek USA Inc.In Stock: 6383RT9460WSC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9469WSC is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use 25-UFBGA, WLCSP (2.52x2.52) packaging to ensure PCB footprint and assembly compatibility.
• Battery Chemistry & Cell Count: Single-cell lithium-ion/polymer charging capability is required.
• Interface Protocol: I2C communication interface must be present for system integration.
• Operating Temperature Range: -40°C to 85°C minimum operating range ensures thermal compatibility.
• Supply Voltage Tolerance: Maximum supply voltage rating must accommodate the application's input voltage.
• Charge Current Capability: Maximum charging current must meet or exceed application requirements.
• Battery Voltage Rating: Maximum battery pack voltage must support the target cell voltage.
• Regulatory Compliance: ROHS3 compliance and MSL rating must be maintained.

The RT9460WSC qualifies as a substitute based on matching package, battery chemistry, cell count, interface, operating temperature, and compliance certifications. Differences in programmable features, fault protection scope, and electrical ratings are noted in the parameter comparison.

Parameter Comparison

Engineering Selection Recommendations

Both the RT9469WSC and RT9460WSC maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and moisture-handling compatibility. The RT9460WSC supports higher maximum supply voltage (12V vs. 9V) and higher maximum charge current (3.125A vs. 2.275A), making it suitable for applications requiring increased input voltage headroom or higher charging rates. The RT9469WSC provides additional programmable current control and expanded fault protection (over-current and reverse-battery detection), which may be critical for applications requiring granular charge management or enhanced safety features. Selection between these parts should be based on specific application voltage and current requirements, as well as the necessity of programmable current control and comprehensive fault detection.

Frequently Asked Questions (FAQ)

Q: Can RT9460WSC directly replace RT9469WSC in existing designs?

A: Physical and electrical compatibility exists due to identical packaging (25-WLCSP), interface (I2C), operating temperature range, and battery chemistry support. However, functional differences must be evaluated: RT9460WSC lacks programmable current control and over-current/reverse-battery protection. Design validation is required if these features are utilized in the original application.

Q: What are the key differences between these two charger ICs?

A: The RT9469WSC offers programmable current and voltage control with five fault protection mechanisms (over-current, over-temperature, over-voltage, reverse-battery, short-circuit). The RT9460WSC provides two fault protections (over-temperature, over-voltage) without programmable current control. The RT9460WSC supports higher supply voltage (12V maximum vs. 9V) and higher charging current (3.125A vs. 2.275A).

Q: Are the package dimensions identical?

A: Yes. Both parts use 25-UFBGA, WLCSP packaging with 2.52x2.52mm dimensions, ensuring identical PCB footprint and assembly compatibility.

Q: Do both parts support I2C communication?

A: Yes. Both RT9469WSC and RT9460WSC feature I2C interface for system integration and configuration.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL rating 3 with 168-hour floor life, requiring identical moisture handling and storage protocols.

Q: Which part should be selected for high-current charging applications?

A: The RT9460WSC supports maximum charging current of 3.125A compared to 2.275A for the RT9469WSC, making it suitable for higher-current applications. Verify that the application does not require programmable current control or over-current protection before substitution.