PAM3101AAA280 Equivalent & Substitute Parts

Part Overview

The PAM3101AAA280 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed output applications. It delivers 300mA at a fixed 2.8V output with a maximum dropout voltage of 0.45V at full load current. The device integrates over-current, over-temperature, and short-circuit protection with an enable control feature.

The PAM3101AAA280 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.8V
Output Current	300mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.45V @ 300mA
Quiescent Current	90 µA
Package	SOT-23-3
Operating Temperature Range	-40°C to 85°C
Protection Features	Over Current, Over Temperature, Short Circuit
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PAM3101AAA280 is determined by the following critical parameters:

Fixed output voltage of 2.8V
Output current capability of 300mA minimum
SOT-23-3 package compatibility
Operating temperature range of -40°C to 85°C
Protection against over-current and over-temperature conditions
Surface mount mounting type

The AP2127N-2.8TRG1 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Both devices are manufactured by Diodes Incorporated, share identical output voltage and current specifications, use the same package footprint, and operate across the same temperature range.

Parameter Comparison

Parameter	PAM3101AAA280	AP2127N-2.8TRG1	Match Status
Manufacturer	Diodes Incorporated	Diodes Incorporated	Match
Output Voltage (Fixed)	2.8V	2.8V	Match
Output Current	300mA	300mA	Match
Input Voltage (Max)	5.5V	6V	Compatible (Higher)
Dropout Voltage (Max)	0.45V @ 300mA	0.3V @ 300mA	Compatible (Lower)
Quiescent Current	90 µA	90 µA	Match
Package	SOT-23-3	SOT-23-3	Match
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Match
Protection Features	OCP, OTP, SCP	OCP, OTP	Compatible
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match

Engineering Selection Recommendations

The AP2127N-2.8TRG1 is the manufacturer-recommended substitute for the obsolete PAM3101AAA280. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and production runs.

The AP2127N-2.8TRG1 offers improved electrical performance with a lower maximum dropout voltage of 0.3V compared to 0.45V, and a higher maximum input voltage rating of 6V versus 5.5V. These enhancements provide greater design margin and operational flexibility. The substitute is currently in active production status with confirmed inventory availability.

Pin-to-pin compatibility and identical package footprint (SOT-23-3) enable direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the AP2127N-2.8TRG1 be used as a direct replacement for the PAM3101AAA280?

A: Yes. Both devices share identical output voltage (2.8V), output current (300mA), package (SOT-23-3), and operating temperature range (-40°C to 85°C). Pin configuration and footprint are compatible for direct substitution.

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

A: The AP2127N-2.8TRG1 features a lower dropout voltage (0.3V versus 0.45V) and higher maximum input voltage (6V versus 5.5V). The AP2127N-2.8TRG1 does not include short-circuit protection, while the PAM3101AAA280 includes this feature. The AP2127N-2.8TRG1 is in active production; the PAM3101AAA280 is obsolete.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and REACH unaffected. Regulatory status is equivalent for both devices.

Q: What packaging options are available for the substitute?

A: The AP2127N-2.8TRG1 is supplied in Tape & Reel (TR) packaging. The original PAM3101AAA280 packaging format is not specified in the available data.

Q: Is the quiescent current identical between the two parts?

A: Yes. Both devices draw 90 µA quiescent current, ensuring equivalent power consumption in standby or low-load conditions.

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