PAM8302LASCR Equivalent & Substitute Parts

Part Overview

The PAM8302LASCR is a Class D monaural amplifier IC manufactured by Diodes Incorporated, designed to deliver 2.5W output power at 4Ω load in a compact 8-MSOP surface mount package. This device integrates depop, short-circuit, and thermal protection features for audio amplification applications operating across a 2V to 5.5V supply voltage range.

The PAM8302LASCR has reached obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives from Diodes Incorporated and other manufacturers provide compatible electrical and mechanical specifications suitable for direct replacement or design migration.

Key Parameters

Parameter	Value
Amplifier Type	Class D
Output Configuration	1-Channel (Mono)
Max Output Power @ 4Ω	2.5W
Supply Voltage Range	2V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-MSOP / 8-TSSOP
Mounting Type	Surface Mount
Protection Features	Depop, Short-Circuit, Thermal Protection
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PAM8302LASCR is determined by the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: Class D
Output Configuration: 1-Channel (Mono)
Package Type: 8-MSOP or 8-TSSOP
Mounting Type: Surface Mount
Operating Temperature Range: -40°C ~ 85°C minimum
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Criteria:

Supply Voltage Range: Must encompass or overlap with 2V ~ 5.5V
Output Power: Minimum 2.5W at 4Ω load (or equivalent performance at specified load impedance)
Protection Features: Short-circuit and thermal protection required

Substitute parts are grouped into two categories based on electrical performance alignment:

Category 1 - Direct Equivalents (Identical Output Power): Parts delivering 2.5W or greater output power at 4Ω load with identical or superior supply voltage range and protection feature sets.

Category 2 - Functional Alternatives (Comparable Performance): Parts with output power specifications at different load impedances (8Ω) that maintain functional compatibility within the application envelope, with enhanced feature integration.

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Power @ Load	Supply Voltage	Package	Operating Temp	Protection Features	Inventory (Pcs)
PAM8302LASCR	Diodes Incorporated	Obsolete	2.5W @ 4Ω	2V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Short-Circuit, Thermal	19,719
PAM8302AASCR	Diodes Incorporated	Active	2.5W @ 4Ω	2V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Short-Circuit, Thermal	131,045
IS31AP2005-SLS2-TR	Lumissil Microsystems	Active	2.95W @ 4Ω	2.7V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Differential Inputs, Shutdown	9,778
SSM2305RMZ-R2	Analog Devices Inc.	Active	2.8W @ 4Ω	2.2V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Differential Inputs, Short-Circuit, Thermal, Shutdown	3,645
SSM2305RMZ-REEL	Analog Devices Inc.	Active	2.8W @ 4Ω	2.2V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Differential Inputs, Short-Circuit, Thermal, Shutdown	16,235
SSM2305RMZ-REEL7	Analog Devices Inc.	Active	2.8W @ 4Ω	2.2V ~ 5.5V	8-MSOP	-40°C ~ 85°C	Depop, Differential Inputs, Short-Circuit, Thermal, Shutdown	53,571
TPA2005D1DGNR	Texas Instruments	Active	1.45W @ 8Ω	2.5V ~ 5.5V	8-HVSSOP	-40°C ~ 85°C	Differential Inputs, Short-Circuit, Thermal, Shutdown	15,850
TPA2005D1DGNRQ1	Texas Instruments	Active	1.45W @ 8Ω	2.5V ~ 5.5V	8-HVSSOP	-40°C ~ 85°C	Differential Inputs, Short-Circuit, Thermal, Shutdown	1,434
TPA2005D1TDGNRQ1	Texas Instruments	Active	1.45W @ 8Ω	2.5V ~ 5.5V	8-HVSSOP	-40°C ~ 85°C	Differential Inputs, Short-Circuit, Thermal, Shutdown	8,617

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement:

The PAM8302AASCR is the recommended direct substitute for the obsolete PAM8302LASCR. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications: 2.5W output power at 4Ω, 2V to 5.5V supply voltage range, and -40°C to 85°C operating temperature. The PAM8302AASCR maintains active product status with significantly higher inventory availability (131,045 units), ensuring supply chain continuity. Both devices are ROHS3 compliant and feature equivalent protection mechanisms. The primary difference is packaging format (Cut Tape & Digi-Reel® versus standard packaging) and moisture sensitivity level classification.

Secondary Recommendations - Enhanced Performance Alternatives:

The SSM2305RMZ series (SSM2305RMZ-R2, SSM2305RMZ-REEL, SSM2305RMZ-REEL7) from Analog Devices Inc. provides 2.8W output power at 4Ω, exceeding the PAM8302LASCR specification by 12%. These devices maintain identical package geometry (8-MSOP), operating temperature range (-40°C to 85°C), and ROHS3 compliance. The SSM2305RMZ variants incorporate differential input capability and shutdown functionality in addition to standard protection features. Supply voltage range extends to 2.2V minimum, providing broader operational envelope. Inventory availability is substantial across all three variants (3,645 to 53,571 units).

The IS31AP2005-SLS2-TR from Lumissil Microsystems delivers 2.95W at 4Ω with 8-MSOP packaging and identical operating temperature specifications. This device features differential inputs and shutdown control. Supply voltage minimum is 2.7V, which is compatible with the original 2V to 5.5V range for applications operating above 2.7V. Active product status and 9,778 units in inventory support availability.

Alternative for Lower Power Applications:

The TPA2005D1DGNR and TPA2005D1DGNRQ1 from Texas Instruments are functional alternatives for applications where 1.45W output power at 8Ω load is acceptable. These devices employ 8-HVSSOP packaging with exposed pad design, maintain -40°C to 85°C operating temperature, and include differential inputs with comprehensive protection. The automotive-qualified variants (TPA2005D1DGNRQ1 and TPA2005D1TDGNRQ1) carry AEC-Q100 certification for automotive applications. These parts are not direct replacements due to lower output power specification but serve applications with reduced power requirements.

Frequently Asked Questions (FAQ)

Q: Can the PAM8302AASCR be used as a direct replacement for the PAM8302LASCR?

A: Yes. The PAM8302AASCR is a direct equivalent with identical electrical specifications: 2.5W output power at 4Ω, 2V to 5.5V supply voltage, -40°C to 85°C operating temperature, and equivalent protection features. Both are 8-MSOP surface mount packages. The primary difference is packaging format and product status (Active versus Obsolete).

Q: What is the difference between the SSM2305RMZ-R2, SSM2305RMZ-REEL, and SSM2305RMZ-REEL7?

A: These three variants are electrically identical Class D amplifiers with 2.8W output power at 4Ω. The designations reflect packaging and reel configuration differences. All three maintain 8-MSOP package geometry, identical electrical performance, and ROHS3 compliance. Selection between variants depends on procurement and assembly requirements.

Q: Are the TPA2005D1DGNR variants suitable replacements for the PAM8302LASCR?

A: The TPA2005D1DGNR series provides functional compatibility in 8-MSOP package form factor and operating temperature range but deliver lower output power (1.45W at 8Ω versus 2.5W at 4Ω). These parts are suitable for applications with reduced power requirements or where 8Ω load impedance is specified. They are not direct replacements for 4Ω load applications requiring 2.5W output.

Q: What is the significance of the 8-HVSSOP package variant in the TPA2005 series?

A: The 8-HVSSOP package includes an exposed pad for enhanced thermal dissipation compared to standard 8-MSOP packages. This design supports improved heat transfer during operation. The TPA2005 series uses this package variant to manage thermal performance at specified output power levels.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, consistent with the original PAM8302LASCR specification.

Q: What is the difference between the TPA2005D1DGNRQ1 and TPA2005D1TDGNRQ1?

A: Both variants are automotive-qualified (AEC-Q100) with identical electrical specifications and 8-HVSSOP packaging. The primary difference is operating temperature range: TPA2005D1DGNRQ1 operates -40°C to 85°C, while TPA2005D1TDGNRQ1 extends to -40°C to 105°C. Selection depends on application temperature requirements.

Q: Can the IS31AP2005-SLS2-TR be used in applications requiring 2V minimum supply voltage?

A: The IS31AP2005-SLS2-TR specifies 2.7V minimum supply voltage, which is higher than the original PAM8302LASCR specification of 2V minimum. This part is suitable for applications operating at 2.7V or above but not for designs requiring operation below 2.7V.

Q: What protection features are common across all substitute parts?

A: Short-circuit and thermal protection are present in all substitute parts. Depop functionality is included in the PAM8302AASCR, IS31AP2005-SLS2-TR, and SSM2305RMZ series. Shutdown control is available in the IS31AP2005-SLS2-TR, SSM2305RMZ series, and TPA2005 variants.

Q: Are differential input capabilities required for substitution?

A: Differential inputs are not required for substitution. The original PAM8302LASCR does not specify differential inputs. Substitute parts offering differential inputs (IS31AP2005-SLS2-TR, SSM2305RMZ series, TPA2005 variants) provide this as an enhanced feature but remain compatible with single-ended input designs through appropriate circuit configuration.

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