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Diodes Incorporated AP2204R-2.8TRG1
- Part No.:
- AP2204R-2.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP2204R-2.8TRG1.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,554
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Product details
Overview
AP2204R-2.8TRG1 from Diodes Incorporated is a fixed-output 2.8 V, 150 mA ultra-low dropout (ULDO) linear regulator in SOT-89 package, featuring 2.6 V to 24 V input range, 100 mV dropout at 100 µA, 60 dB PSRR at 1 kHz, ±2% output voltage accuracy, and thermal shutdown protection-designed for USB-powered portable instrumentation and low-power embedded subsystems.
For engineers reviewing the AP2204R-2.8TRG1 datasheet, AP2204R-2.8TRG1 pinout, AP2204R-2.8TRG1 application, or AP2204R-2.8TRG1 equivalent, key selection criteria include dropout performance under light-load conditions, ground current vs. load behavior, compatibility with ceramic output capacitors, and thermal dissipation capability in space-constrained SOT-89 layouts.
Technical Context
The AP2204R-2.8TRG1 integrates a precision 1.24 V bandgap reference, error amplifier, resistor network for fixed 2.8 V output, current-limit circuitry, and enable-controlled startup logic. Its EPNP process enables wide VIN operation while maintaining low quiescent current.
It operates in dropout when VIN falls below VOUT + 1 V (i.e., <3.8 V), with dropout voltage rising predictably from 100 mV at 100 µA to 360 mV at 150 mA. The EN pin accepts TTL-compatible logic levels (VIH ≥2.0 V, VIL ≤0.4 V) and draws ≤1 µA in active state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% - ensures stable biasing for 2.8 V logic rails and analog sensors without external feedback. |
| Input Voltage Range | 2.6 V to 24 V - supports single-cell Li-ion (3.0–4.2 V), multi-cell alkaline, and industrial 12/24 V supplies. |
| Max Output Current | 150 mA - sufficient for microcontroller cores, RF transceivers, and small display drivers in portable systems. |
| Dropout Voltage | 100 mV @ 100 µA - enables regulation down to 2.9 V input, critical for battery end-of-life operation. |
| PSRR | 60 dB @ 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO. |
| Quiescent Current | 20 µA @ IOUT = 0 A - minimizes standby power loss in always-on monitoring circuits. |
| Thermal Resistance θJA | 165 °C/W (SOT-89) - requires PCB copper pour on exposed pad (connected to GND) for >100 mA continuous operation. |
Pinout & Package
SOT-89 package (Option 1) with exposed pad connected to GND per Note 4; 3-pin configuration optimized for thermal performance in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; must be decoupled with ≥1.0 µF ceramic capacitor near pin. |
| 2 | VOUT | Regulated 2.8 V output; requires ≥2.2 µF low-ESR ceramic capacitor for stability and transient response. |
| 3 | GND | Power ground reference; tied to exposed pad for thermal conduction and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 20 µA at zero load - extends battery life in IoT endpoint sleep modes. |
| Low-noise regulation | 30 µVrms output noise (10 Hz–100 kHz) - suitable for ADC reference and RF front-end biasing. |
| Ceramic capacitor compatible | Stable with ≥2.2 µF X5R/X7R ceramics - eliminates need for costly tantalum or electrolytic capacitors. |
| Enable control | EN pin with 1 µA max input current and 0.4 V/2.0 V logic thresholds - enables system-level power sequencing. |
| Thermal shutdown | Activates at TJ ≥ +150 °C - prevents damage during overload or poor heatsinking conditions. |
Applications
| USB-Powered Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Compact wearable device measuring temperature and pulse oximetry using 2.8 V analog front-end and BLE SoC. IC Role / Device Role / Timing Role: Primary 2.8 V rail regulator supplying analog sensor interface and digital core; no timing function. Use Value: 100 mV dropout preserves regulation until battery drops to 2.9 V, extending usable runtime by ~12% versus standard LDOs. |
Use Scenario: Handheld blood glucose meter with LCD, button interface, and electrochemical sensor. IC Role / Device Role / Timing Role: Main power regulator for mixed-signal ASIC and display driver IC; no clock generation. Use Value: 30 µVrms noise avoids interference with µV-level sensor signal conditioning, eliminating post-processing filtering. |
| Industrial Data Logger | Smart Home Hub Controller |
|
Use Scenario: Battery-backed environmental logger recording temperature/humidity every 5 minutes using 2.8 V MCU and EEPROM. IC Role / Device Role / Timing Role: Standby power regulator enabling ultra-low-IQ wake-up from deep sleep. Use Value: 20 µA quiescent current reduces annual battery drain to <1.8 mAh, supporting 5-year operation on CR2032. |
Use Scenario: Wi-Fi/Zigbee hub powering 2.8 V PMIC, audio codec, and status LEDs from 5 V USB adapter. IC Role / Device Role / Timing Role: Point-of-load regulator for noise-sensitive audio section; no timing role. Use Value: 60 dB PSRR at 1 kHz attenuates 5 V DC-DC ripple, preventing audible buzz in speaker output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/TT | 250 mA rated, 170 mV dropout @ 250 mA, 3.5 µA IQ, SOT-23-3 (no EN) | Lacks enable control and has higher dropout above 100 mA; better for cost-sensitive non-sequenced designs. | Select when board space is tighter (SOT-23-3) and enable functionality is unnecessary. |
| TPS7A2028PDQNR | 300 mA rated, 130 mV dropout @ 300 mA, 6.5 µA IQ, WSON-6 (EN + PG) | Includes power-good flag and lower noise (7 µVrms); requires larger footprint and different layout. | Choose when system-level fault reporting and sub-10 µVrms noise are required for high-precision analog. |
Compared with MCP1700T-2802E/TT and TPS7A2028PDQNR, the AP2204R-2.8TRG1 uniquely balances 150 mA capability, 100 mV ultra-low-light-load dropout, and SOT-89 thermal performance-making it optimal for thermally constrained portable devices needing precise 2.8 V regulation without PG or ultra-low-noise overhead.
Availability
AP2204R-2.8TRG1 is available at Aetrix Electronics and suitable for USB-powered instrumentation, portable medical monitors, and industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP2204R-2.8TRG1 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP2204 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial applications where low dropout, low IQ, and ceramic-capacitor compatibility are mandatory.
FAQ
What is the minimum input voltage required for regulation at 2.8 V output?
The AP2204R-2.8TRG1 requires VIN ≥ VOUT + 1 V = 3.8 V for guaranteed regulation under all loads and temperatures. Below this, dropout occurs-output voltage tracks VIN minus dropout voltage. At 100 µA load, regulation holds down to 2.9 V input due to 100 mV dropout, but full 150 mA capability requires ≥3.8 V.
Can the AP2204R-2.8TRG1 be used with a 1 µF input and 2.2 µF output ceramic capacitor?
Yes-the AP2204R-2.8TRG1 is explicitly characterized and stable with 1.0 µF X5R/X7R input and 2.2 µF ceramic output capacitors, as confirmed in the Typical Applications Circuit and Electrical Characteristics table. No ESR requirements or damping resistors are needed.
Is the exposed pad on the SOT-89 package electrically connected, and how should it be routed?
Yes-the exposed pad on the SOT-89 (Option 1) is internally connected to GND (per Note 4). It must be soldered to a PCB copper pour tied to the main GND plane to achieve the specified θJA = 165 °C/W and prevent thermal shutdown during 100+ mA operation.
Does the AP2204R-2.8TRG1 have reverse polarity or reverse current protection?
No-the AP2204R-2.8TRG1 lacks internal reverse-polarity or reverse-current blocking. If VIN can fall below VOUT (e.g., during hot-swap or battery removal), an external Schottky diode in series with VIN is recommended to prevent backfeed and potential damage.
AP2204R-2.8TRG1 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):
- 2.8V
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP2204R-2.8TRG1 FAQ
1.How can I place an order for AP2204R-2.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2204R-2.8TRG1 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-2.8TRG1 reliable?
The price and inventory of AP2204R-2.8TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2204R-2.8TRG1 is usually 5 days.
3.What payment methods are accepted for AP2204R-2.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204R-2.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2204R-2.8TRG1?
AP2204R-2.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2204R-2.8TRG1 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-2.8TRG1?
For technical support, including AP2204R-2.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204R-2.8TRG1 requirements.
6.How does Aetrix verify that AP2204R-2.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2204R-2.8TRG1 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-2.8TRG1 meets industry standards.
7.What is the process for return or replacement of AP2204R-2.8TRG1?
All AP2204R-2.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204R-2.8TRG1, 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-2.8TRG1 part is unused and in its original packaging.
Return procedure for AP2204R-2.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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