PAM3101DAB330 Equivalent & Substitute Parts

Part Overview

The PAM3101DAB330 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 3.3V output at 300mA in a SOT-23-5 surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The regulator features integrated over-current, over-temperature, and short-circuit protection with an enable control function, suitable for low-power applications requiring stable 3.3V rails.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	300mA
Input Voltage (Max)	5.5V
Dropout Voltage @ 300mA	0.23V
Quiescent Current	90 µA
Package Type	SOT-23-5
Operating Temperature Range	-40°C to 85°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Output voltage fixed at 3.3V
Output current capability of 300mA minimum
Input voltage maximum rating of 5.5V or higher
Surface mount package compatibility (SOT-23-5 or TSOT-23-5)
Operating temperature range of -40°C minimum to 85°C minimum
Protection features including over-current and over-temperature

Substitute parts are grouped into two categories based on package type compatibility:

Category 1: SOT-23-5 Standard Package — Direct mechanical and electrical equivalents with identical package footprint: AP2127K-3.3TRG1, LDK130M33R, RT9193-33GB, TPS73233DBVR

Category 2: TSOT-23-5 Thin Package — Functionally equivalent with thinner profile, requiring PCB layout verification: ADP1712AUJZ-3.3-R7, ADP1713AUJZ-3.3-R7, MAX8887EZK33+T, MAX8888EZK33+T, MIC5323-3.3YD5-TR, RT9193-33GJ5

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout @ 300mA	Iq (µA)	Package	Temp Range	Status
PAM3101DAB330	Diodes Inc.	3.3V	300mA	5.5V	0.23V	90	SOT-23-5	-40 to 85°C	Obsolete
AP2127K-3.3TRG1	Diodes Inc.	3.3V	300mA	6V	0.3V	90	SOT-23-5	-40 to 85°C	Active
ADP1712AUJZ-3.3-R7	Analog Devices	3.3V	300mA	5.5V	0.27V	70	TSOT-23-5	-40 to 125°C	Active
ADP1713AUJZ-3.3-R7	Analog Devices	3.3V	300mA	5.5V	0.27V	70	TSOT-23-5	-40 to 125°C	Active
LDK130M33R	STMicroelectronics	3.3V	300mA	5.5V	0.4V	60	SOT-23-5	-40 to 125°C	Active
MAX8887EZK33+T	Analog Devices/Maxim	3.3V	300mA	5.5V	0.15V	100	TSOT-23-5	-40 to 85°C	Active
MAX8888EZK33+T	Analog Devices/Maxim	3.3V	300mA	5.5V	0.15V	100	TSOT-23-5	-40 to 85°C	Active
MIC5323-3.3YD5-TR	Microchip Technology	3.3V	300mA	5.5V	0.17V	150	TSOT-23-5	-40 to 125°C	Active
RT9193-33GB	Richtek USA Inc.	3.3V	300mA	5.5V	0.3V	130	SOT-23-5	-40 to 125°C	Active
RT9193-33GJ5	Richtek USA Inc.	3.3V	300mA	5.5V	0.3V	130	TSOT-23-5	-40 to 125°C	Active
TPS73233DBVR	Texas Instruments	3.3V	250mA	5.5V	0.15V	550	SOT-23-5	-40 to 125°C	Active

Engineering Selection Recommendations

Primary Recommendation (Direct Replacement): AP2127K-3.3TRG1 from Diodes Incorporated provides the closest electrical and mechanical match with identical SOT-23-5 packaging, matching quiescent current of 90µA, and active product status. This part maintains the same manufacturer ecosystem and control feature set.

Alternative for Extended Temperature Range: LDK130M33R from STMicroelectronics offers active status with extended operating temperature to 125°C and includes automotive-grade qualification (AEC-Q100), suitable for applications requiring higher temperature performance or automotive compliance.

Low Dropout Alternative: MAX8887EZK33+T and MAX8888EZK33+T from Analog Devices/Maxim deliver superior dropout voltage performance (0.15V typical) in TSOT-23-5 packaging. MAX8888EZK33+T includes power-good output functionality for additional system monitoring capability.

High-Performance Option: MIC5323-3.3YD5-TR from Microchip Technology provides the lowest dropout voltage (0.17V) with extended temperature range (-40 to 125°C) and superior PSRR characteristics (80dB at 1kHz), available in TSOT-23-5 package.

Note on TPS73233DBVR: This Texas Instruments part is electrically compatible but rated for 250mA output current, below the 300mA specification of the PAM3101DAB330. Selection requires verification that application current requirements do not exceed 250mA.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can I use a TSOT-23-5 package part as a direct replacement for SOT-23-5?

A: TSOT-23-5 (thin package) and SOT-23-5 (standard package) share identical pin configurations and footprints but differ in height. TSOT-23-5 parts are mechanically compatible with SOT-23-5 PCB layouts. However, verify clearance requirements for components or heatsinks in close proximity to the regulator.

Q: What is the significance of the dropout voltage difference between PAM3101DAB330 (0.23V) and substitute parts?

A: Dropout voltage determines the minimum input-to-output voltage differential required for proper regulation. Lower dropout voltage (e.g., MAX8887 at 0.15V) allows operation with lower input voltages or provides better efficiency. Higher dropout voltage (e.g., LDK130M33R at 0.4V) requires greater input voltage margin but may offer other benefits such as lower quiescent current or automotive qualification.

Q: Why does TPS73233DBVR have a lower output current rating (250mA vs 300mA)?

A: TPS73233DBVR is rated for 250mA maximum output current. This part is suitable only for applications drawing 250mA or less. If your design requires the full 300mA capability, select an alternative from the list rated for 300mA output current.

Q: What is the difference between AP2127K-3.3TRG1 and RT9193-33GB?

A: Both are SOT-23-5 packages with 300mA output. AP2127K-3.3TRG1 has lower dropout voltage (0.3V vs 0.3V) and lower quiescent current (90µA vs 130µA), making it more efficient. RT9193-33GB offers extended temperature range to 125°C. Select based on thermal performance requirements and operating temperature specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, consistent with the original PAM3101DAB330 specification.

Q: Which substitute part offers the best performance for battery-powered applications?

A: ADP1712AUJZ-3.3-R7 and ADP1713AUJZ-3.3-R7 offer the lowest quiescent current (70µA) among active alternatives, reducing standby power consumption. For applications prioritizing efficiency under load, MAX8887EZK33+T and MIC5323-3.3YD5-TR provide the lowest dropout voltage (0.15V and 0.17V respectively).

Q: Can I mix package types (SOT-23-5 and TSOT-23-5) within the same production run?

A: Yes, provided PCB layout accommodates both package heights and clearance requirements are verified. Both package types share identical pin assignments and electrical specifications. Document package type selection in design documentation and bill of materials to ensure manufacturing consistency.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message