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Diodes Incorporated AP2204K-3.3TRG1
- Part No.:
- AP2204K-3.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2204K-3.3TRG1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,269
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Product details
Overview
AP2204K-3.3TRG1 from Diodes Incorporated is a fixed-output 3.3V ultra-low dropout (ULDO) linear regulator in SOT-23-5 package, delivering up to 150mA output current with 100mV dropout at 100µA load, 60dB PSRR at 1kHz, ±2% output voltage accuracy, and 20µA ground current at zero load - deployed in USB-powered portable instrumentation and low-power microcontroller power rails.
For engineers reviewing the AP2204K-3.3TRG1 datasheet, AP2204K-3.3TRG1 pinout, AP2204K-3.3TRG1 application, or AP2204K-3.3TRG1 equivalent, key selection criteria include input voltage range (2.6V–24V), thermal shutdown behavior, enable logic thresholds (EN high ≥2.0V, low ≤0.4V), and compatibility with ceramic output capacitors down to 2.2µF.
Technical Context
The AP2204K-3.3TRG1 integrates a precision 1.24V bandgap reference, error amplifier, resistor feedback network, current-limit protection, and chip-enable circuitry. Its EPNP-based architecture enables stable regulation across wide input ranges while maintaining ultra-low quiescent current.
It operates in dropout when VIN < VOUT + 1V (per datasheet Note 9), features thermal shutdown at TJ ≈ +150°C, and supports fast transient response with typical 200mV output deviation during 1mA→150mA load steps - validated in Figure 8 of DS37168 Rev. 6-3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% (±66mV) ensures reliable MCU core/logic rail compliance without external resistors. |
| Input Voltage Range | 2.6V to 24V supports single-cell Li-ion (3.0–4.2V), multi-cell alkaline, and industrial 12V/24V bus inputs. |
| Dropout Voltage | 100mV @ 100µA; 360mV @ 150mA - enables regulation from 3.66V input at full load for 3.3V rail. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Ground Current | 20µA @ IOUT = 0A; 2.5mA @ 150mA - minimizes standby power loss in battery-critical systems. |
| Enable Threshold | EN "high" ≥2.0V, "low" ≤0.4V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
| Thermal Shutdown | Activates at TJ ≈ +150°C - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
SOT-23-5 package (3.0mm × 1.7mm × 1.3mm), thermally enhanced with exposed pad connected to GND per datasheet recommendation for optimal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN | Input supply connection | Accepts 2.6–24V; must be decoupled with ≥1.0µF ceramic capacitor near pin. |
| 2: GND | Power ground reference | Common return for VIN, VOUT, EN; ties to exposed pad for thermal conduction. |
| 3: EN | Active-high enable input | Pull ≥2.0V to activate regulator; ≤0.4V disables output and reduces IQ to 0.01µA. |
| 4: ADJ/NC | Adjust/No-connect terminal | No internal connection for fixed 3.3V version; tie to GND to maximize thermal copper area. |
| 5: VOUT | Regulated output | Delivers stable 3.3V ±2%; requires ≥2.2µF ceramic output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 20µA at zero load enables >1-year battery life in coin-cell–powered sensors. |
| Low-noise operation | 30µVrms integrated noise (10Hz–100kHz) preserves signal integrity in ADC reference or RF bias rails. |
| Ceramic capacitor compatible | Stable with 2.2µF X5R/X7R ceramics - eliminates costly tantalum or electrolytic alternatives. |
| High line/load regulation | 0.05% line regulation and 0.5% load regulation minimize output drift across operating conditions. |
| Thermal and current protection | Internal foldback current limit and thermal shutdown prevent damage during fault conditions. |
Applications
| USB-Powered Portable Instrumentation | Low-Power Microcontroller Core Rail |
|---|---|
|
Use Scenario: Handheld multimeter powered by single USB 5V source with internal 3.3V logic and analog front-end. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying MCU, display driver, and precision ADC reference. Use Value: 60dB PSRR rejects USB switcher ripple; 100mV dropout allows operation down to 3.4V input as battery depletes. |
Use Scenario: Battery-operated environmental sensor node using ARM Cortex-M0+ MCU and BLE radio. IC Role / Device Role / Timing Role: Standby-mode power source enabling <20µA system sleep current. Use Value: Ultra-low 20µA ground current extends shelf life; EN pin enables firmware-controlled power gating. |
| Industrial Field Transmitter Interface | POS Terminal Peripheral Power |
|
Use Scenario: 4–20mA loop-powered transmitter requiring isolated 3.3V for digital processing and sensor excitation. IC Role / Device Role / Timing Role: Secondary LDO after isolated DC-DC, cleaning residual switching noise before ADC sampling. Use Value: 30µVrms noise floor prevents quantization errors; ±2% accuracy meets Class A sensor calibration requirements. |
Use Scenario: Point-of-sale terminal with detachable barcode scanner powered via USB-C PD negotiation. IC Role / Device Role / Timing Role: Local 3.3V regulator for scanner's image sensor and interface logic. Use Value: Wide 2.6–24V input accommodates variable PD voltages (5V/9V/15V/20V); SOT-23-5 footprint saves board space. |
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 | 250mA max output, 175mV dropout @ 250mA, 3µA IQ, SOT-23-3 (no EN) | Lacks enable pin; higher dropout limits use below 3.475V input at full load. | Select when EN functionality is unnecessary and lower IQ is critical. |
| Torex XC6206P332MR-G | 150mA max, 160mV dropout @ 100mA, 1µA IQ, SOT-23-3 (no EN), ±2% accuracy | No enable; smaller 1.2mm × 1.0mm footprint but no thermal pad; lower PSRR (50dB @ 1kHz). | Choose for ultra-low-IQ space-constrained designs where EN and PSRR are secondary. |
Compared with MCP1700T-3302E/TT and XC6206P332MR-G, the AP2204K-3.3TRG1 uniquely combines EN control, 60dB PSRR, and thermal pad in SOT-23-5 - making it optimal for noise-sensitive, firmware-managed portable systems requiring robust thermal performance.
Availability
AP2204K-3.3TRG1 is available at Aetrix Electronics and suitable for USB-powered instrumentation, low-power microcontroller core rails, industrial field transmitters, and POS peripheral power requiring stable component supply across production lifecycles.
Supply support for AP2204K-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q standards.
The AP2204 series belongs to Diodes' high-voltage ULDO regulator product line, engineered for battery-powered and wide-input industrial applications demanding low noise, high PSRR, and extended input voltage range.
FAQ
What is the minimum input voltage required for regulation at 3.3V output?
The datasheet specifies minimum input as the larger of 2.6V or VOUT + 1V - so for 3.3V output, minimum VIN is 4.3V. Below this, the device enters dropout and output voltage drops linearly with input. This ensures stable regulation across temperature and load variations.
Can AP2204K-3.3TRG1 operate with a 1µF input and 1µF output capacitor?
No. The datasheet mandates ≥1.0µF ceramic input and ≥2.2µF ceramic output capacitance for stability. Using only 1µF on output risks oscillation under load transients, as confirmed in Typical Application Circuits (page 3) and stability testing in Figure 12.
Is the exposed pad on the SOT-23-5 package electrically connected?
Yes - the exposed pad is internally connected to GND per Diodes' recommended layout (page 15). It must be soldered to a PCB thermal pad tied to the main GND plane to achieve specified θJA = 250°C/W and prevent thermal shutdown under 150mA load.
Does AP2204K-3.3TRG1 support reverse polarity protection?
No. The device lacks intrinsic reverse-voltage blocking; applying negative voltage to VIN or VOUT relative to GND may cause latch-up or permanent damage. External protection (e.g., series Schottky diode) is required in systems prone to reverse connection.
AP2204K-3.3TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP2204K-3.3TRG1 FAQ
1.How can I place an order for AP2204K-3.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2204K-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 AP2204K-3.3TRG1 reliable?
The price and inventory of AP2204K-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 AP2204K-3.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2204K-3.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204K-3.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2204K-3.3TRG1?
AP2204K-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2204K-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 AP2204K-3.3TRG1?
For technical support, including AP2204K-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204K-3.3TRG1 requirements.
6.How does Aetrix verify that AP2204K-3.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2204K-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 AP2204K-3.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2204K-3.3TRG1?
All AP2204K-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204K-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 AP2204K-3.3TRG1 part is unused and in its original packaging.
Return procedure for AP2204K-3.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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