CS35L00-CNZR Equivalent & Substitute Parts

Part Overview

The CS35L00-CNZR is a Class D mono audio amplifier IC manufactured by Cirrus Logic Inc., designed for low-power audio applications requiring a single-channel output configuration. This device delivers 2.83W output power at 4Ω load impedance and operates across a 2.5V to 5.5V supply voltage range. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications, package footprint, and thermal characteristics to ensure direct replacement capability.

Substiute Parts

CS35L00-CNZR

Cirrus Logic Inc.In Stock: 101118CS35L00-CNZR Datasheet

Current PartRFQ

LM48310SD/NOPB

National SemiconductorIn Stock: 15273LM48310SD/NOPB Datasheet

MFR RecommendedRFQ

MP1720DQ-216-LF-Z

Monolithic Power Systems Inc.In Stock: 2278MP1720DQ-216-LF-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS35L00-CNZR are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility:

• Class D amplifier topology
• Single-channel (mono) output configuration
• Output power rating within acceptable range of 2.83W @ 4Ω
• Supply voltage range encompassing or exceeding 2.5V ~ 5.5V
• Presence of essential protection features (short-circuit, thermal protection)

Mechanical Compatibility:

• 10-pin DFN package with 3x3mm footprint
• Surface mount technology
• Exposed pad configuration

Regulatory Compliance:

• ECCN classification: EAR99
• HTSUS code: 8542.33.0001
• REACH compliance status

The identified substitutes (LM48310SD/NOPB and MP1720DQ-216-LF-Z) satisfy these criteria while offering active product status and extended operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

LM48310SD/NOPB (National Semiconductor): This substitute offers active product status with extended operating temperature range (-40°C to 85°C), providing superior thermal performance compared to the obsolete CS35L00-CNZR. Output power is rated at 2.6W @ 4Ω, representing a 8.2% reduction from the original specification. Supply voltage range extends to 2.4V minimum, providing enhanced low-voltage operation capability. The 10-WSON package maintains the 3x3mm footprint and exposed pad configuration, ensuring PCB layout compatibility. This part is suitable for applications where the lower output power specification is acceptable and extended temperature operation is beneficial.

MP1720DQ-216-LF-Z (Monolithic Power Systems Inc.): This substitute provides the closest electrical match to the CS35L00-CNZR, with output power rated at 2.78W @ 4Ω (1.8% reduction from original). Supply voltage range matches the original specification (2.5V ~ 5.5V). The device features active product status and extended operating temperature range (-40°C to 85°C). The 10-QFN package maintains 3x3mm footprint compatibility with exposed pad configuration. RoHS3 compliance and MSL-1 moisture sensitivity rating indicate superior manufacturing and storage characteristics. This part is recommended for applications requiring maximum electrical compatibility with the original CS35L00-CNZR specification.

Both substitutes maintain regulatory compliance (ECCN EAR99, HTSUS 8542.33.0001) and are classified as active products, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the LM48310SD/NOPB directly replace the CS35L00-CNZR on existing PCBs?

A: The LM48310SD/NOPB features a 10-WSON package versus the original 10-DFN package. While both maintain 3x3mm footprint and exposed pad configuration, the pin pitch and pad layout may differ. PCB layout verification is required before implementation. The lower output power rating (2.6W vs 2.83W @ 4Ω) must be evaluated against application requirements.

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

A: The MP1720DQ-216-LF-Z provides superior electrical compatibility with output power of 2.78W @ 4Ω compared to the LM48310SD/NOPB at 2.6W @ 4Ω. The MP1720 also matches the original supply voltage range exactly (2.5V ~ 5.5V). The LM48310 offers extended low-voltage operation (2.4V minimum) and is available in higher inventory quantities.

Q: Are package footprints identical between all three parts?

A: All three parts utilize 10-pin packages with 3x3mm footprint and exposed pad configuration. However, the specific package variants differ: CS35L00-CNZR uses 10-DFN, LM48310SD/NOPB uses 10-WSON, and MP1720DQ-216-LF-Z uses 10-QFN. Pin pitch and pad dimensions may vary; PCB design files must be cross-referenced with manufacturer datasheets.

Q: Which substitute is recommended for new designs?

A: The MP1720DQ-216-LF-Z is recommended for new designs due to closest electrical specification match, active product status, RoHS3 compliance, and MSL-1 moisture sensitivity rating. The LM48310SD/NOPB is suitable as a secondary option where extended temperature operation (-40°C to 85°C) is a design requirement.

Q: What are the supply voltage compatibility considerations?

A: The CS35L00-CNZR operates from 2.5V to 5.5V. The MP1720DQ-216-LF-Z matches this range exactly. The LM48310SD/NOPB extends the minimum to 2.4V, providing enhanced compatibility with lower-voltage supply rails. All three parts support the full 5.5V maximum specification.

Q: Are protection features equivalent across all three parts?

A: The CS35L00-CNZR includes depop, differential inputs, short-circuit protection, thermal protection, and shutdown features. The MP1720DQ-216-LF-Z includes depop, short-circuit protection, and thermal protection. The LM48310SD/NOPB datasheet does not specify these features in the provided parameters. Detailed feature comparison requires manufacturer datasheets.