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

Diodes Incorporated AP2204RA-5.0TRG1

Name: AP2204RA-5.0TRG1
Brand: Diodes Incorporated
SKU: AP2204RA-5.0TRG1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2204RA-5.0TRG1

Manufacturer:: Diodes Incorporated

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

Package:: TO-243AA

Datasheet:: AP2204RA-5.0TRG1.pdf

Description:: IC REG LINEAR 5V 150MA SOT89-3

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Product details

Overview

AP2204RA-5.0TRG1 from Diodes Incorporated is a fixed-output 5.0V ultra-low dropout (ULDO) linear regulator in SOT-89 (RA) package, designed for space-constrained portable electronics. It delivers up to 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-ideal for USB-powered devices and battery-operated systems requiring stable low-noise 5V rail.

For engineers reviewing the AP2204RA-5.0TRG1 datasheet, AP2204RA-5.0TRG1 pinout, AP2204RA-5.0TRG1 application, or AP2204RA-5.0TRG1 equivalent, key selection criteria include dropout performance at light-to-moderate loads, thermal behavior in SOT-89 RA configuration, compatibility with ceramic output capacitors, and enable-controlled power sequencing in compact 5V supply domains.

Technical Context

The AP2204RA-5.0TRG1 integrates a precision 1.24V bandgap reference, error amplifier, resistor network for fixed 5.0V output, current-limit protection, and active enable logic. Its EPNP-based high-voltage process enables operation up to 24V input while maintaining low ground current (20µA no-load, 2.5mA at 150mA load) and excellent line regulation (0.05%) and load regulation (0.5%).

Thermal management relies on the exposed substrate pad (connected to VIN per Note 5), delivering θ_JA = 165°C/W in SOT-89 RA configuration. The device features thermal shutdown, low-noise (30µV_rms) output, and stable operation with ≥1.0µF ceramic input and ≥2.2µF ceramic output capacitors.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0V ±2% - ensures reliable 5V logic/USB peripheral interface without external feedback components.
Input Voltage Range	2.6V to 24V - supports wide-input applications including automotive accessory rails and multi-cell battery packs.
Max Output Current	150mA - sufficient for microcontrollers, sensors, and low-power USB peripherals in portable designs.
Dropout Voltage	100mV @ 100µA load - enables regulation down to VIN = 5.1V, critical for battery end-of-life operation.
PSRR	60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input.
Quiescent Current	20µA (no load), 2.5mA @ 150mA - balances ultra-low standby power with full-load efficiency in duty-cycled systems.
Output Noise	30µV_rms (10Hz–100kHz) - minimizes jitter in analog signal chains and clock buffers powered from this rail.

Pinout & Package

SOT-89 (RA) package with exposed substrate pad connected to VIN (per datasheet Note 5); 3-pin configuration optimized for thermal dissipation in medium-power LDO applications.

Pin/Terminal	Circuit Role	Design Meaning
1	VIN	Main input supply connection; also tied to exposed substrate pad for enhanced thermal conduction from die to PCB copper.
2	VOUT	Regulated 5.0V output; requires ≥2.2µF ceramic capacitor for stability and transient response.
3	GND	Analog ground reference; must be low-impedance connection to minimize noise coupling and ensure regulation accuracy.

Key Features

Feature	Design Value
Ultra-low quiescent current	20µA no-load current enables >1-year battery life in always-on sensor nodes with 200mAh coin cell.
High PSRR at 1kHz	60dB rejection of ripple from switching regulators allows clean 5V rail without additional LC filtering.
Low-noise output	30µV_rms broadband noise preserves SNR in ADC references and RF bias supplies.
Thermal shutdown protection	Integrated junction temperature cutoff prevents damage during sustained overload or poor PCB heatsinking.
Ceramic capacitor compatible	Stable with low-ESR ceramics eliminates need for costly tantalum or electrolytic output capacitors.

Applications

USB Peripheral Power

Portable Medical Sensor

Use Scenario: Powering USB HID devices (keyboards, mice) from variable-input wall adapters or power banks.

IC Role / Device Role / Timing Role: Primary 5V LDO regulator providing clean, regulated VBUS-compatible supply independent of upstream source variation.

Use Value: Maintains 5.0V ±2% across 2.6–24V input range and 0–150mA load, enabling plug-and-play compatibility with diverse USB host sources.

Use Scenario: Supplying analog front-end and low-power MCU in handheld glucose meters or pulse oximeters.

IC Role / Device Role / Timing Role: Low-noise 5V rail generator for precision ADC reference and op-amp biasing in battery-powered diagnostics.

Use Value: 30µV_rms output noise and <±100ppm/°C tempco preserve measurement accuracy over clinical operating temperature range.

Industrial IoT Node

Laptop Auxiliary Rail

Use Scenario: Powering LoRaWAN or NB-IoT modems and environmental sensors in remote monitoring units.

IC Role / Device Role / Timing Role: Standby-optimized LDO supplying always-on real-time clock and wake-up circuitry.

Use Value: 20µA quiescent current extends 2xAA alkaline battery life to >3 years in sleep-dominated duty cycles.

Use Scenario: Generating auxiliary 5V rail for USB-C PD controller or embedded security chip in ultrabooks.

IC Role / Device Role / Timing Role: Secondary LDO decoupling high-noise system rails to meet strict EMC and signal integrity requirements.

Use Value: 60dB PSRR at 1kHz attenuates high-frequency switching noise from main CPU VRM, preventing data corruption.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low dropout linear regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-5002E/MB	Higher dropout (280mV @ 250mA), lower max current (250mA), no enable pin, SOT-23-3 package.	Lacks enable control and thermal shutdown; suited for simpler, non-sequenced 5V rails.	Select when board space is critical and enable functionality is unnecessary.
TPS7A2050PDBVR	Lower quiescent current (65nA), higher PSRR (75dB @ 1kHz), same 150mA rating, but only 6V max input.	Not suitable for >6V inputs; superior for ultra-low-power battery applications with tight noise budgets.	Prefer for coin-cell or single-Li-ion systems where input never exceeds 6V and nanoamp IQ is mandatory.

Compared with MCP1703T-5002E/MB and TPS7A2050PDBVR, the AP2204RA-5.0TRG1 uniquely balances wide-input capability (24V), integrated enable, thermal protection, and SOT-89 RA thermal performance-making it optimal for industrial and automotive-adjacent 5V point-of-load regulation where input transients and thermal margin are design constraints.

Availability

AP2204RA-5.0TRG1 is available at Aetrix Electronics and suitable for USB peripheral power, portable medical sensors, industrial IoT nodes, and laptop auxiliary rails requiring stable component supply with RoHS/Green compliance and traceable sourcing.

Supply support for AP2204RA-5.0TRG1 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 USB-connected devices needing robust regulation across volatile input sources while minimizing board area and thermal overhead.

FAQ

What is the recommended input capacitor for AP2204RA-5.0TRG1?

A minimum 1.0µF ceramic capacitor is required at the VIN pin, placed as close as possible to pins 1 and 3. X5R or X7R dielectrics are preferred for stable capacitance over temperature and bias. This capacitor stabilizes the input rail and improves transient response during load steps.

Does AP2204RA-5.0TRG1 require an external pull-up on the EN pin?

No external pull-up is required. The EN pin has an internal pull-down; applying ≥2.0V enables regulation, while ≤0.4V disables output and reduces quiescent current to 0.01µA. For default-on operation, tie EN directly to VIN. For controlled sequencing, drive EN from a GPIO or power-good signal.

Can AP2204RA-5.0TRG1 be used with a 22µF tantalum output capacitor?

Yes, but not recommended. While stable with tantalum, the device is optimized for low-ESR ceramic capacitors (≥2.2µF). Tantalum introduces higher ESR and risk of surge-current failure during startup; ceramics provide better transient response, smaller footprint, and guaranteed stability per datasheet test conditions.

What is the thermal pad connection requirement for SOT-89 RA package?

The exposed substrate pad on the SOT-89 RA variant must be connected to VIN-not GND-as specified in datasheet Note 5. This connection provides the primary thermal path from die to PCB copper. A dedicated thermal pad with ≥2cm² copper area and multiple vias to inner ground planes is recommended for continuous 150mA operation at ambient >60°C.

AP2204RA-5.0TRG1 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):: 5V

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

AP2204RA-5.0TRG1 FAQ

1.How can I place an order for AP2204RA-5.0TRG1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2204RA-5.0TRG1 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 AP2204RA-5.0TRG1 reliable?

The price and inventory of AP2204RA-5.0TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2204RA-5.0TRG1 is usually 5 days.

3.What payment methods are accepted for AP2204RA-5.0TRG1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204RA-5.0TRG1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2204RA-5.0TRG1?

AP2204RA-5.0TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2204RA-5.0TRG1 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 AP2204RA-5.0TRG1?

For technical support, including AP2204RA-5.0TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204RA-5.0TRG1 requirements.

6.How does Aetrix verify that AP2204RA-5.0TRG1 is sourced from the original manufacturer or authorized distributors?

All AP2204RA-5.0TRG1 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 AP2204RA-5.0TRG1 meets industry standards.

7.What is the process for return or replacement of AP2204RA-5.0TRG1?

All AP2204RA-5.0TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204RA-5.0TRG1, 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 AP2204RA-5.0TRG1 part is unused and in its original packaging.

Return procedure for AP2204RA-5.0TRG1:

1.Submit a request within 90 days.

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

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