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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP2210N-3.3TRE1

Name: AP2210N-3.3TRE1
Brand: Diodes Incorporated
SKU: AP2210N-3.3TRE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2210N-3.3TRE1

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP2210N-3.3TRE1.pdf

Description:: IC REG LINEAR 3.3V 300MA SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:6,588

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Product details

Overview

AP2210N-3.3TRE1 from Diodes Incorporated is a 300mA ultra-low dropout (ULDO) linear regulator with fixed 3.3V output, 250mV typical dropout at full load, ±1% output voltage accuracy, and 75dB PSRR at 100Hz. It delivers low-noise power for RF front-end circuits, battery-powered handheld devices, and noise-sensitive analog signal chains.

For engineers reviewing the AP2210N-3.3TRE1 datasheet, AP2210N-3.3TRE1 pinout, AP2210N-3.3TRE1 application, or AP2210N-3.3TRE1 equivalent, this device supports critical design requirements including sub-1µA shutdown current, reverse current protection, thermal shutdown, and logic-compatible enable control in SOT-23-5 packaging.

Technical Context

The AP2210N-3.3TRE1 integrates a bandgap reference, error amplifier, and PMOS pass transistor to achieve ultra-low dropout and high PSRR. Its internal architecture enables stable operation with ceramic output capacitors as low as 2.2µF and bypass capacitor support for noise reduction.

It operates across -40°C to +125°C junction temperature, supports input voltages from 4.3V to 13.2V, and features CMOS/TTL-compatible enable input with 0.4V logic-low threshold and 2.0V logic-high threshold - enabling direct interfacing with microcontrollers and baseband processors.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.3V ±1% - ensures precise biasing for 3.3V logic, RF ICs, and ADC references without external feedback.
Max Output Current	300mA - sufficient to power multiple RF transceivers, sensor interfaces, or MCU peripherals from a single regulator.
Dropout Voltage	250mV at 300mA - enables operation from 4.3V input while maintaining regulation, ideal for single-cell Li-ion or multi-cell alkaline systems.
PSRR	75dB at 100Hz - suppresses power supply ripple from switching converters feeding the LDO input, preserving signal integrity in RF stages.
Standby Current	1µA max - extends battery life in always-on wireless sensors and standby modes of portable electronics.
Enable Threshold	V_IL ≤ 0.4V / V_IH ≥ 2.0V - compatible with 1.8V/3.3V GPIO without level-shifting, simplifying host control.
Protection Features	Overcurrent, overtemperature, and reverse current protection - prevents damage during load faults, thermal overload, or backfeed conditions.

Pinout & Package

SOT-23-5 package: compact 2.9mm × 1.6mm surface-mount footprint with 0.95mm pitch; matte tin-plated leads, RoHS-compliant and halogen-free.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIN)	Input voltage supply	Accepts 4.3V–13.2V input; requires 1.0µF ceramic decoupling close to pin for stability.
2 (GND)	Ground reference	Low-impedance return path for regulator core and load; must be connected to main system ground plane.
3 (EN)	Enable control input	Active-high logic input; pulls low (<0.4V) to enter 1µA shutdown mode; open or high (>2.0V) enables regulation.
4 (BYP/ADJ)	Bypass capacitor terminal	Connects 100pF capacitor to GND to reduce output noise; not used for fixed-output versions but retained for pin compatibility.
5 (VOUT)	Regulated output	Delivers stable 3.3V ±1%; requires 2.2µF ceramic output capacitor with low ESR for transient response and PSRR performance.

Key Features

Feature	Design Value
Ultra-low dropout	250mV at 300mA enables use in tight input-output margin applications such as Li-ion powered RF modules.
High PSRR (75dB @100Hz)	Effectively filters ripple from upstream DC/DC converters, reducing need for additional filtering stages in RF power rails.
Reverse current protection	Prevents current flow from VOUT to VIN during shutdown or input collapse - critical for systems with multiple power domains.
±1% output accuracy	Guarantees compliance with 3.3V I/O voltage tolerances of modern MCUs, FPGAs, and RF ICs across temperature and load.
Logic-compatible enable	Direct interface with 1.8V/3.3V microcontroller GPIO eliminates external level shifters and reduces BOM count.

Applications

Cellular Front-End Power

Portable Medical Sensors

Use Scenario: Powering RF transceiver ICs (e.g., LTE/WCDMA front-end modules) in smartphones and IoT cellular modems.

IC Role / Device Role / Timing Role: Primary low-noise bias rail for PA drivers, LNAs, and synthesizer VCOs requiring clean 3.3V supply.

Use Value: 75dB PSRR and 260nV/√Hz output noise prevent AM-to-PM distortion and phase noise degradation in transmit paths.

Use Scenario: Supplying analog front-end (AFE) and low-power MCU in wearable ECG or pulse oximetry devices.

IC Role / Device Role / Timing Role: Stable 3.3V rail for precision ADC reference, op-amp signal conditioning, and BLE radio subsystem.

Use Value: ±1% accuracy and <120µV/°C tempco ensure consistent measurement gain and offset calibration across body temperature range.

Industrial Handheld Terminals

Wireless Audio Transmitters

Use Scenario: Power management in ruggedized barcode scanners and field service PDAs operating on primary batteries.

IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep modes via EN pin control and fast wake-up response.

Use Value: 1µA shutdown current extends battery runtime in intermittent-scan applications; 250mV dropout preserves headroom down to 3.55V input.

Use Scenario: Clean power delivery for 2.4GHz Bluetooth audio transmitters in wireless earbud charging cases.

IC Role / Device Role / Timing Role: Dedicated LDO for Bluetooth SoC RF section, isolated from noisy digital switching supplies.

Use Value: Reverse current protection prevents discharge of backup battery when USB input is disconnected; SOT-23-5 fits tight PCB space constraints.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ULDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-3302E/TO	250mA max output, 600mV dropout at 250mA, no reverse current protection	Lacks reverse current blocking; suitable only where backfeed risk is absent	Select if cost sensitivity outweighs reverse protection need and load current stays ≤250mA
Torex XC6206P332MR-G	300mA output, 300mV dropout at 300mA, no enable pin, no thermal shutdown	Fixed-function only; no active control or fault protection - limited to simple point-of-load use	Choose only for space-constrained designs where enable control and safety features are unnecessary

Compared with MCP1700-3302E/TO and XC6206P332MR-G, the AP2210N-3.3TRE1 uniquely combines 300mA capability, 250mV dropout, reverse current blocking, and logic-enable in SOT-23-5 - making it optimal for battery-fed RF and portable systems demanding both efficiency and robustness.

Availability

AP2210N-3.3TRE1 is available at Aetrix Electronics and suitable for cellular front-end power, portable medical sensors, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AP2210N-3.3TRE1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.

The AP2210 series belongs to Diodes' precision ULDO regulator product line, engineered specifically for noise-sensitive RF, battery-powered, and portable electronics applications demanding low dropout, high PSRR, and integrated protection.

FAQ

What is the minimum input voltage required for AP2210N-3.3TRE1 to maintain regulation?

The minimum input voltage is 3.55V - calculated as V_OUT + V_DROP(MAX) = 3.3V + 0.25V. At 300mA load and +25°C, typical dropout is 250mV, but up to 400mV may occur across temperature and process variation. For reliable PSRR and regulation, Diodes recommends VIN ≥ 4.3V (V_OUT + 1.0V).

Does AP2210N-3.3TRE1 require an external bypass capacitor on the BYP pin?

Yes - a 100pF capacitor between BYP (Pin 4) and GND is required to achieve the specified 260nV/√Hz output noise and optimal PSRR performance. Omitting it degrades high-frequency noise rejection and increases output voltage ripple, especially in RF applications.

Can AP2210N-3.3TRE1 be used with ceramic output capacitors?

Yes - it is explicitly designed for stability with ceramic output capacitors ≥2.2µF and ESR ≤100mΩ. Unlike older LDOs, it does not require high-ESR tantalum or aluminum electrolytic capacitors, simplifying layout and improving reliability in space-constrained designs.

Is reverse current protection active during shutdown mode?

Yes - reverse current protection remains fully functional when EN is low (shutdown), preventing current flow from VOUT back into VIN. This protects upstream power sources (e.g., batteries or DC/DC converters) from unintended discharge during system sleep or input removal.

AP2210N-3.3TRE1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 13.2V

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 180 µA

Current - Supply (Max):: 15 mA

PSRR:: 75dB (100Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Reverse Polarity

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AP2210N-3.3TRE1 FAQ

1.How can I place an order for AP2210N-3.3TRE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2210N-3.3TRE1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AP2210N-3.3TRE1 reliable?

The price and inventory of AP2210N-3.3TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2210N-3.3TRE1 is usually 5 days.

3.What payment methods are accepted for AP2210N-3.3TRE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2210N-3.3TRE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2210N-3.3TRE1?

AP2210N-3.3TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2210N-3.3TRE1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AP2210N-3.3TRE1?

For technical support, including AP2210N-3.3TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2210N-3.3TRE1 requirements.

6.How does Aetrix verify that AP2210N-3.3TRE1 is sourced from the original manufacturer or authorized distributors?

All AP2210N-3.3TRE1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP2210N-3.3TRE1 meets industry standards.

7.What is the process for return or replacement of AP2210N-3.3TRE1?

All AP2210N-3.3TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2210N-3.3TRE1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AP2210N-3.3TRE1 part is unused and in its original packaging.

Return procedure for AP2210N-3.3TRE1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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