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Diodes Incorporated AP2204K-2.5TRG1
- Part No.:
- AP2204K-2.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2204K-2.5TRG1.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,719
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Product details
Overview
AP2204K-2.5TRG1 from Diodes Incorporated is a fixed-output 2.5V 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-2.5TRG1 datasheet, AP2204K-2.5TRG1 pinout, AP2204K-2.5TRG1 application, or AP2204K-2.5TRG1 equivalent, key selection criteria include input voltage range (2.6V–24V), thermal shutdown behavior, enable pin logic thresholds, ceramic capacitor compatibility, and junction temperature derating above +85°C.
Technical Context
The AP2204K-2.5TRG1 integrates a precision 1.24V bandgap reference, error amplifier, resistor network for fixed 2.5V output, current-limit protection, and active-high enable circuitry. Its EPNP process enables wide VIN operation while maintaining low quiescent current and high ripple rejection.
It operates across –40°C to +125°C junction temperature, supports ceramic output capacitors ≥2.2µF, and features thermal shutdown triggered at TJ > +150°C. Dropout voltage rises predictably with load: 320mV at 100mA and 360mV at 150mA under typical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% (±50mV tolerance) ensures stable MCU core or sensor biasing without external feedback. |
| Input Voltage Range | 2.6V to 24V allows direct use with single Li-ion, multi-cell alkaline, or industrial 12V/24V rails. |
| Max Output Current | 150mA continuous (200mA peak) supports low-power SoCs, BLE modules, and analog front-ends. |
| Dropout Voltage | 100mV @ 100µA; 360mV @ 150mA - enables regulation even when VIN approaches VOUT + 0.36V. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO. |
| Ground Current | 20µA @ IOUT = 0A; 2.5mA @ 150mA - minimizes standby power loss in battery-critical systems. |
| Enable Threshold | VEN(H) ≥ 2.0V, VEN(L) ≤ 0.4V - compatible with 1.8V/3.3V GPIOs for precise power sequencing control. |
Pinout & Package
SOT-23-5 package (3.1mm × 1.7mm × 1.3mm), thermally enhanced with exposed pad connected to GND per datasheet Note 6 for optimal dissipation (θJA = 250°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input supply connection | Accepts 2.6–24V; requires 1.0µF ceramic input capacitor placed near pin for stability. |
| 2 - GND | Power ground reference | Common return for VIN, VOUT, EN, and ADJ/NC; must be tied to exposed pad for thermal performance. |
| 3 - EN | Active-high enable input | Pull ≥2.0V to enable regulation; pull ≤0.4V to enter 1.0µA standby mode. |
| 4 - ADJ/NC | Adjust/No-connect terminal | No internal connection for fixed 2.5V version; recommend tying to GND to maximize PCB copper area. |
| 5 - VOUT | Regulated output node | Delivers 2.5V ±2%; requires 2.2µF ceramic output capacitor with ESR < 100mΩ. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 20µA at zero load enables >1-year battery life in always-on IoT sensors. |
| Low-noise output | 30µVrms RMS noise (10Hz–100kHz) prevents interference in ADC references or RF bias rails. |
| Thermal shutdown protection | Auto-shutdown at TJ > +150°C prevents damage during sustained overload or poor heatsinking. |
| Ceramic capacitor compatible | Stable with low-ESR ceramics ≥2.2µF - eliminates need for costly tantalum or electrolytic caps. |
| High line/load regulation | 0.05% line regulation and 0.5% load regulation ensure consistent voltage across varying input and load conditions. |
Applications
| USB-Powered Portable Test Equipment | Industrial Sensor Node Power |
|---|---|
Use Scenario: Handheld multimeter powered by USB 5V input with internal 2.5V rail for 16-bit SAR ADC and LCD driver. IC Role / Device Role / Timing Role: Primary post-regulator providing clean, low-noise 2.5V reference and analog supply. Use Value: 30µVrms noise and 60dB PSRR prevent code flicker and measurement drift under USB host switching noise. | Use Scenario: Battery-operated temperature/humidity node using CR2032 coin cell and LoRaWAN transceiver. IC Role / Device Role / Timing Role: Main system LDO supplying 2.5V to MCU, sensor IC, and RF front-end during transmit bursts. Use Value: 100mV dropout at light load extends usable battery voltage down to 2.6V, maximizing runtime. |
| Low-Power Microcontroller Core Supply | Medical Wearable Signal Chain |
Use Scenario: Cortex-M0+ MCU in hearable device operating from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Core voltage regulator enabling dynamic voltage scaling between active and sleep modes. Use Value: 1.0µA standby current during deep-sleep mode reduces average system current by >95% vs. standard LDOs. | Use Scenario: ECG patch with analog front-end, 24-bit delta-sigma ADC, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Dedicated 2.5V LDO for precision analog signal conditioning and reference generation. Use Value: ±2% output accuracy and ±100ppm/°C tempco ensure consistent gain calibration across body-worn temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 250mA max output, 170mV dropout @ 250mA, 3.5µA IQ, SOT-23-3 (no enable) | Lacks enable pin and thermal shutdown; unsuitable for sequenced or fault-tolerant systems | Select only if enable and thermal protection are unnecessary and higher output current is required. |
| TPS7A0525PDQNR | 200mA max, 175mV dropout @ 200mA, 25nA IQ, 1.5mm × 1.5mm X2SON package | Lower IQ but smaller footprint and no exposed pad; limited thermal mass for >100mA continuous loads | Prefer for space-constrained wearables where ultra-low standby dominates thermal design. |
Compared with MCP1700T-2502E/TT and TPS7A0525PDQNR, the AP2204K-2.5TRG1 uniquely balances enable functionality, thermal safety, ceramic compatibility, and 150mA capability in a thermally robust SOT-23-5 - making it optimal for portable systems requiring both reliability and moderate load headroom.
Availability
AP2204K-2.5TRG1 is available at Aetrix Electronics and suitable for USB-powered instrumentation, industrial sensor nodes, low-power microcontroller cores, and medical wearable signal chains requiring stable component supply and long-term manufacturability.
Supply support for AP2204K-2.5TRG1 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2204 series belongs to Diodes' high-voltage ULDO regulator product line, designed specifically for battery-powered and wide-input industrial systems demanding low noise, high PSRR, and extended input voltage range.
FAQ
What is the minimum input voltage required for stable 2.5V regulation?
The minimum input voltage is the greater of 2.6V or VOUT + 1V - so 3.5V is required to maintain regulation at full 150mA load. Below that, dropout occurs and output voltage drops linearly with input. At light loads (e.g., 100µA), regulation holds down to 2.6V due to the 100mV dropout spec.
Can AP2204K-2.5TRG1 be used with a 1µF output capacitor?
No - the datasheet specifies a minimum 2.2µF ceramic output capacitor for stability. Using 1µF risks oscillation or poor transient response, especially under load steps. The 2.2µF value ensures phase margin >45° and damping of LC peaking with typical PCB parasitics.
Is the exposed pad on the SOT-23-5 package electrically connected?
Yes - the exposed pad is internally connected to GND (per datasheet Note 6). It must be soldered to a PCB thermal pad tied to the system ground plane to achieve specified θJA = 250°C/W and enable thermal shutdown functionality. Leaving it floating degrades thermal performance and may cause premature shutdown.
Does AP2204K-2.5TRG1 support reverse polarity protection?
No - the device lacks integrated reverse-voltage protection. Applying reversed input voltage (e.g., –0.3V on VIN) exceeds absolute maximum ratings and may cause latch-up or permanent damage. An external series Schottky diode or ideal diode controller is required for reverse-polarity resilience.
AP2204K-2.5TRG1 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):
- 2.5V
- 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:
- 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-2.5TRG1 FAQ
1.How can I place an order for AP2204K-2.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2204K-2.5TRG1 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-2.5TRG1 reliable?
The price and inventory of AP2204K-2.5TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2204K-2.5TRG1 is usually 5 days.
3.What payment methods are accepted for AP2204K-2.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2204K-2.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2204K-2.5TRG1?
AP2204K-2.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2204K-2.5TRG1 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-2.5TRG1?
For technical support, including AP2204K-2.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2204K-2.5TRG1 requirements.
6.How does Aetrix verify that AP2204K-2.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2204K-2.5TRG1 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-2.5TRG1 meets industry standards.
7.What is the process for return or replacement of AP2204K-2.5TRG1?
All AP2204K-2.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2204K-2.5TRG1, 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-2.5TRG1 part is unused and in its original packaging.
Return procedure for AP2204K-2.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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