PAM2307BECADJR Equivalent & Substitute Parts

Part Overview

The PAM2307BECADJR is a buck switching regulator IC manufactured by Diodes Incorporated, designed for positive adjustable output applications with 3A output current capability. This component operates as a step-down converter with a single adjustable output, suitable for power management applications requiring input voltages between 2.7V and 5.5V.

The PAM2307BECADJR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

PAM2307BECADJR

Diodes IncorporatedIn Stock: 8667PAM2307BECADJR Datasheet

Current PartRFQ

L5987ATR

STMicroelectronicsIn Stock: 5940L5987ATR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PAM2307BECADJR is determined by the following critical parameters:

Core Functional Requirements:

• Function: Step-Down (Buck) topology
• Output Type: Adjustable
• Output Configuration: Positive
• Number of Outputs: 1
• Output Current: 3A minimum
• Voltage - Output (Min/Fixed): 0.6V or lower
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad or compatible footprint

Electrical Compatibility Criteria:

• Input voltage range must encompass or exceed the original 2.7V to 5.5V specification
• Output voltage range must support 0.6V minimum and accommodate the application's maximum output requirement
• Switching frequency and synchronous rectifier presence are secondary considerations that may affect performance but do not prevent substitution if core parameters align

Compliance & Certification:

• RoHS3 compliance required
• Operating temperature range should meet or exceed the original -40°C to 85°C specification

The L5987ATR from STMicroelectronics meets these substitution criteria with compatible electrical specifications and package configuration.

Parameter Comparison

Engineering Selection Recommendations

The L5987ATR is a direct functional substitute for the PAM2307BECADJR based on matching core electrical specifications and package configuration. Both devices are ROHS3 compliant and support the same 8-SOIC package footprint with exposed pad.

The L5987ATR offers extended input and output voltage ranges (2.9V to 18V input, 0.6V to 18V output) compared to the PAM2307BECADJR (2.7V to 5.5V input, 0.6V to 5.5V output), providing greater design flexibility for applications requiring higher voltage operation. The L5987ATR also features an extended operating temperature range of -40°C to 150°C (junction temperature) versus -40°C to 85°C (ambient temperature) for the original part.

The PAM2307BECADJR includes an integrated synchronous rectifier, while the L5987ATR does not. This difference may affect efficiency characteristics in specific applications but does not prevent functional substitution when output current and voltage requirements are met.

The L5987ATR is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete PAM2307BECADJR.

Frequently Asked Questions (FAQ)

Q: Can the L5987ATR directly replace the PAM2307BECADJR without PCB modifications?

A: Yes. Both devices use the identical 8-SOIC (0.154", 3.90mm Width) Exposed Pad package, enabling direct footprint compatibility. Pin configuration and functional pinout alignment must be verified against the respective datasheets to ensure proper circuit operation.

Q: What are the key differences between these two regulators?

A: The primary differences are: (1) Input voltage range: L5987ATR supports 2.9V to 18V versus PAM2307BECADJR's 2.7V to 5.5V; (2) Output voltage range: L5987ATR supports 0.6V to 18V versus PAM2307BECADJR's 0.6V to 5.5V; (3) Synchronous rectifier: PAM2307BECADJR includes one, L5987ATR does not; (4) Switching frequency: PAM2307BECADJR operates at 1.5MHz fixed, L5987ATR operates at 250kHz to 1MHz; (5) Product status: L5987ATR is active, PAM2307BECADJR is obsolete.

Q: Will the absence of a synchronous rectifier in the L5987ATR affect my application?

A: The synchronous rectifier in the PAM2307BECADJR improves efficiency by reducing conduction losses. The L5987ATR uses a standard rectifier diode, which may result in slightly lower efficiency. Application-specific thermal and power dissipation analysis is necessary to determine if this difference impacts your design requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the PAM2307BECADJR and L5987ATR are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the moisture sensitivity level difference, and does it matter?

A: The PAM2307BECADJR has MSL 1 (Unlimited), while the L5987ATR has MSL 3 (168 Hours). MSL 3 requires controlled storage conditions and has a 168-hour floor life after moisture exposure. For applications with standard manufacturing and storage practices, this difference is manageable through proper handling procedures.

Q: Can the L5987ATR handle higher input voltages than my original design requires?

A: Yes. The L5987ATR's extended input voltage range (up to 18V) accommodates higher supply voltages than the PAM2307BECADJR (5.5V maximum). If your application operates within the original 2.7V to 5.5V range, the L5987ATR will function correctly without modification.