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

Diodes Incorporated AP2204R-3.3TRG1

Name: AP2204R-3.3TRG1
Brand: Diodes Incorporated
SKU: AP2204R-3.3TRG1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2204R-3.3TRG1

Manufacturer:: Diodes Incorporated

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

Package:: TO-243AA

Datasheet:: AP2204R-3.3TRG1.pdf

Description:: IC REG LINEAR 3.3V 150MA SOT89-3

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Product details

Overview

AP2204R-3.3TRG1 from Diodes Incorporated is a fixed-output 3.3V ultra-low dropout (ULDO) linear regulator in SOT-89 package, designed for space-constrained portable and USB-powered systems. It delivers 150mA output current with 100mV dropout at 100µA load, 60dB PSRR at 1kHz, ±2% output voltage accuracy, and operates across 2.6V–24V input range - enabling direct regulation from wide-input sources like automotive or industrial rails.

For engineers reviewing the AP2204R-3.3TRG1 datasheet, AP2204R-3.3TRG1 pinout, AP2204R-3.3TRG1 application, or AP2204R-3.3TRG1 equivalent, key selection criteria include dropout performance under light-load conditions, thermal behavior in SOT-89 Option 1 layout, compatibility with ceramic output capacitors, and enable-pin logic thresholds for power sequencing in battery-backed subsystems.

Technical Context

The AP2204R-3.3TRG1 integrates a precision 1.24V bandgap reference, error amplifier, resistor network for fixed 3.3V output, current-limit protection, thermal shutdown, and an active-high enable circuit. Its EPNP process enables stable operation with low-ESR ceramic capacitors and supports input-to-output differentials as low as 1V while maintaining regulation.

It features ultra-low quiescent current (20µA no-load, 1µA in shutdown), excellent line regulation (0.05%), load regulation (0.5%), and output voltage temperature coefficient of ±100ppm/°C - making it suitable for precision analog supply rails and low-power microcontroller cores where voltage stability across temperature and load is critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.3V ±2% - ensures reliable I/O voltage matching for 3.3V logic families without external feedback components.
Input Voltage Range	2.6V to 24V - allows direct connection to unregulated 12V/24V industrial rails or multi-cell battery stacks without pre-regulation.
Dropout Voltage	100mV @ 100µA - enables stable 3.3V output even when VIN drops to 3.4V, supporting brown-out resilience in battery discharge profiles.
PSRR	60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters, protecting sensitive RF or ADC subsystems.
Quiescent Current	20µA @ no load - minimizes standby power loss in always-on sensor nodes or real-time clock backup supplies.
Enable Threshold	V_EN(HI) = 2.0V min, V_EN(LO) = 0.4V max - compatible with 1.8V/3.3V GPIO control without level-shifting.
Thermal Resistance	θ_JA = 165°C/W (SOT-89 Option 1) - requires minimal copper pour for thermal management in compact PCB layouts.

Pinout & Package

SOT-89 (Option 1) package with exposed pad connected to GND per Note 4 - provides enhanced thermal dissipation and EMI shielding when soldered to internal ground plane.

Pin	Circuit Role	Design Meaning
1	VIN	Main input supply connection; must be decoupled with ≥1.0µF ceramic capacitor near pin.
2	VOUT	Regulated 3.3V output; requires ≥2.2µF low-ESR ceramic capacitor for stability and transient response.
3	GND	Power ground return; tied to exposed pad for thermal and electrical integrity.

Key Features

Feature	Design Value
Wide Input Range Support	2.6V–24V input enables single-regulator solutions across 1S–6S Li-ion, 12V automotive, and 24V industrial inputs.
Ultra-Low Dropout	100mV dropout at 100µA allows >95% efficiency at light loads - critical for battery runtime extension in sleep modes.
Ceramic Capacitor Compatibility	Stable with ≥2.2µF X5R/X7R ceramics - eliminates need for bulky tantalum or electrolytic output caps, reducing board area and cost.
Enable-Controlled Shutdown	Active-high EN pin draws only 1µA in OFF state - supports precise system-level power gating and wake-up sequencing.
Thermal Protection	Integrated thermal shutdown activates at +150°C junction temperature - prevents damage during sustained overload or poor heatsinking.

Applications

USB Peripheral Power Supply

Laptop Subsystem Rail

Use Scenario: Powering USB-C audio adapters or HID peripherals with variable input from USB PD negotiation (5V–20V).

IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying USB PHY, MCU, and EEPROM - regulating down from negotiated bus voltage.

Use Value: Wide VIN range eliminates need for intermediate buck converter; 60dB PSRR prevents USB data corruption from switcher noise.

Use Scenario: Providing clean 3.3V rail to embedded controller, touchpad IC, or secure element in notebook clamshell design.

IC Role / Device Role / Timing Role: Always-on LDO for firmware execution and RTC backup during S3/S4 suspend states.

Use Value: 20µA quiescent current extends battery life in sleep mode; thermal shutdown protects against localized hot spots near hinge region.

Industrial Sensor Node

POS Terminal Logic Supply

Use Scenario: Regulating 3.3V for LoRaWAN or BLE wireless sensor modules powered by 12V field bus or 4xAA alkaline stack.

IC Role / Device Role / Timing Role: Main system LDO delivering regulated voltage to MCU, radio transceiver, and analog front-end.

Use Value: 150mA output supports burst transmission; ±2% accuracy ensures ADC reference stability across -40°C to +85°C ambient.

Use Scenario: Generating 3.3V for EMV contactless reader IC, display driver, and keypad controller in retail payment terminals.

IC Role / Device Role / Timing Role: Secondary LDO fed from main 5V DC-DC, providing isolated, low-noise supply for security-critical components.

Use Value: Low noise (30µVrms) prevents false card detection; enable pin synchronizes power-up with host processor reset sequence.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-3302E/TT	300mA output, 1.6V–6.0V input, 175mV dropout @ 250mA - higher current but narrower VIN range.	Requires pre-regulation below 6V; unsuitable for direct 12V/24V input without additional stage.	Select when higher output current is needed and input is constrained to ≤6V, e.g., single-cell LiPo systems.
TPS7A2033PDQNR	300mA output, 1.6V–6.0V input, 130mV dropout @ 300mA, 6.5µA IQ - lower IQ but limited to 6V max VIN.	Cannot replace AP2204R-3.3TRG1 in 12V/24V applications without upstream buck conversion.	Prefer for ultra-low-power wearables where input is strictly ≤6V and sub-10µA IQ is mandatory.

Compared with MCP1700T-3302E/TT and TPS7A2033PDQNR, the AP2204R-3.3TRG1 uniquely supports direct 24V input with 150mA capability and 100mV dropout at microamp loads - making it the only viable option for high-VIN, low-quiescent, fixed-3.3V regulation in industrial and automotive edge nodes.

Availability

AP2204R-3.3TRG1 is available at Aetrix Electronics and suitable for USB peripheral power supplies, laptop subsystem rails, industrial sensor nodes, and POS terminal logic supplies requiring stable component supply with full RoHS and green compliance.

Supply support for AP2204R-3.3TRG1 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 for industrial, computing, and consumer markets.

The AP2204 series belongs to Diodes' wide-input ULDO regulator product line, engineered specifically for battery-powered and wide-rail applications where low dropout, low noise, and ceramic capacitor compatibility are essential design requirements.

FAQ

What is the maximum continuous output current for AP2204R-3.3TRG1?

The AP2204R-3.3TRG1 delivers 150mA continuously under recommended operating conditions (VIN ≥ VOUT+1V, TJ ≤ +125°C). At 100mA load, dropout is 320mV typical; thermal limits constrain higher currents unless PCB copper area exceeds 1.5cm² for heatsinking.

Can AP2204R-3.3TRG1 operate with a 1µF input and 2.2µF output ceramic capacitor?

Yes - the datasheet specifies 1.0µF input and 2.2µF output ceramic capacitors as standard for stability and transient response. X5R or X7R dielectrics are recommended; no ESR requirements apply due to internal compensation optimized for low-ESR ceramics.

Is the SOT-89 package for AP2204R-3.3TRG1 Option 1 or Option 2?

AP2204R-3.3TRG1 uses SOT-89 Option 1 (pinout: Pin 1=VIN, Pin 2=VOUT, Pin 3=GND), with substrate/exposed pad connected to GND. This configuration matches the mechanical drawing DS37168 Rev.6-3 Figure 1 and is validated for thermal performance at θ_JA=165°C/W.

Does AP2204R-3.3TRG1 include reverse-voltage or reverse-current protection?

No - the AP2204R-3.3TRG1 lacks integrated reverse-voltage or reverse-current blocking. External protection (e.g., series Schottky diode or ideal diode controller) is required if the output may exceed VIN during fault conditions or hot-swap events.

AP2204R-3.3TRG1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 24V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 50 µA

Current - Supply (Max):: 2.5 mA

PSRR:: 60dB (100Hz ~ 1kHz)

Control Features:: -

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89-3

AP2204R-3.3TRG1 FAQ

1.How can I place an order for AP2204R-3.3TRG1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2204R-3.3TRG1 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 AP2204R-3.3TRG1 reliable?

The price and inventory of AP2204R-3.3TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2204R-3.3TRG1 is usually 5 days.

3.What payment methods are accepted for AP2204R-3.3TRG1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204R-3.3TRG1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2204R-3.3TRG1?

AP2204R-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2204R-3.3TRG1 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 AP2204R-3.3TRG1?

For technical support, including AP2204R-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204R-3.3TRG1 requirements.

6.How does Aetrix verify that AP2204R-3.3TRG1 is sourced from the original manufacturer or authorized distributors?

All AP2204R-3.3TRG1 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 AP2204R-3.3TRG1 meets industry standards.

7.What is the process for return or replacement of AP2204R-3.3TRG1?

All AP2204R-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204R-3.3TRG1, 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 AP2204R-3.3TRG1 part is unused and in its original packaging.

Return procedure for AP2204R-3.3TRG1:

1.Submit a request within 90 days.

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

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