Diodes Incorporated AP2210K-3.0TRG1
- Part No.:
- AP2210K-3.0TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2210K-3.0TRG1.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT23-5
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
AP2210K-3.0TRG1 from Diodes Incorporated is a 300mA ultra-low dropout (ULDO) linear regulator with fixed 3.0V output, 250mV typical dropout at full load, ±1% output voltage accuracy, and 75dB PSRR at 100Hz. It delivers low-noise power to RF circuitry and battery-powered portable devices requiring stable, clean supply rails.
For engineers reviewing the AP2210K-3.0TRG1 datasheet, AP2210K-3.0TRG1 pinout, AP2210K-3.0TRG1 application, or AP2210K-3.0TRG1 equivalent, this device is selected for noise-sensitive analog/RF subsystems, handheld electronics with tight input headroom, and applications demanding sub-1µA shutdown current and reverse current protection.
Technical Context
The AP2210K-3.0TRG1 uses a CMOS pass transistor architecture enabling ultra-low dropout and minimal ground current across load range. Its internal bandgap reference and error amplifier provide tight line/load regulation (≤4.5mV line, ≤6mV load) and low temperature coefficient (120 µV/°C).
It integrates logic-compatible enable control (VIH = 2.0V, VIL = 0.4V), thermal shutdown, overcurrent limiting (450–900mA), and reverse current blocking. The BYP pin supports external 100pF capacitor for enhanced noise filtering in RF supply paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% - ensures stable core or I/O rail for 3.0V logic without external feedback components. |
| Max Output Current | 300mA - sufficient for powering RF transceivers, baseband processors, or sensor signal chains in compact portable designs. |
| Dropout Voltage | 250mV at 300mA - enables operation from 4.0V input (VOUT + 1V), maximizing battery runtime in single-cell Li-ion or 3xAA systems. |
| PSRR | 75dB at 100Hz - suppresses low-frequency supply ripple from switching converters feeding the LDO input. |
| Standby Current | 1µA max - extends shelf life and standby time in always-on wireless sensors or IoT endpoints. |
| Output Noise | 260nV/√Hz - meets stringent spectral purity requirements for RF front-end biasing and ADC reference supplies. |
| Enable Threshold | VIL ≤ 0.4V / VIH ≥ 2.0V - compatible with 1.8V/3.3V GPIO without level-shifting in mixed-voltage SoC platforms. |
Pinout & Package
AP2210K-3.0TRG1 is packaged in SOT-23-5, a 5-pin surface-mount package with matte tin-plated leads, RoHS-compliant and halogen-free ("Green").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 4.0V to 13.2V DC input; requires 1.0µF ceramic decoupling close to pin for stability. |
| 2 (GND) | Ground reference | Low-impedance return path for both regulator and load; must be connected to main system ground plane. |
| 3 (EN) | Enable control input | CMOS/TTL-compatible; high = active, low = shutdown; drives <1µA leakage in disabled state. |
| 4 (BYP/ADJ) | Bypass capacitor terminal | Connects 100pF capacitor to GND to reduce output noise and improve PSRR in RF applications. |
| 5 (VOUT) | Regulated output | Delivers 3.0V ±1% to load; requires 2.2µF low-ESR ceramic output capacitor for transient response and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 250mV at 300mA enables use with minimal input–output differential, critical for battery voltage sag conditions. |
| Reverse current protection | Blocks backflow from VOUT to VIN during shutdown or input removal, preventing unintended discharge of backup supplies. |
| Thermal & overcurrent protection | Auto-recovering shutdown triggers at junction temperatures >150°C or output short-circuit currents >450mA. |
| Low-noise design | 260nV/√Hz output noise and 75dB PSRR support sensitive RF ICs like LNAs, mixers, and PLL VCOs. |
| Logic-compatible enable | Direct interface with 1.8V/3.3V microcontrollers eliminates need for external pull-ups or level shifters. |
Applications
| Cellular Handset Power Management | Wireless Audio Transceiver Bias |
|---|---|
|
Use Scenario: Supplies clean 3.0V bias to RF power amplifier and receive chain in GSM/UMTS handsets operating from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: ULDO regulator providing low-noise, low-dropout voltage conversion with fast enable/disable for transmit/receive duty cycling. Use Value: Maintains PA efficiency across battery discharge curve while suppressing switching noise from PMIC DC-DC stages. |
Use Scenario: Powers Bluetooth/Wi-Fi transceiver ICs in true wireless stereo (TWS) earbuds where space and quiescent current are constrained. IC Role / Device Role / Timing Role: Primary 3.0V supply with 1µA shutdown current and 250mV dropout enabling operation down to 3.25V battery voltage. Use Value: Extends playback time by >12% versus standard LDOs and prevents RF desense via 75dB PSRR at baseband frequencies. |
| PDA/Palmtop Core Logic Supply | Industrial Sensor Signal Chain |
|
Use Scenario: Delivers regulated 3.0V to ARM-based application processor and memory subsystem in legacy PDAs with multi-cell alkaline input. IC Role / Device Role / Timing Role: Fixed-output LDO with ±1% accuracy and tight load regulation ensuring stable CPU clocking and data integrity. Use Value: Eliminates need for external trimming resistors and maintains <6mV output deviation across 0.1mA–300mA load step changes. |
Use Scenario: Provides precision 3.0V reference and analog supply to 16-bit SAR ADC and low-noise instrumentation amplifier in battery-operated gas sensors. IC Role / Device Role / Timing Role: Low-noise, low-drift regulator minimizing code spread and offset drift in high-resolution measurements. Use Value: 120 µV/°C tempco and 260nV/√Hz noise contribute <0.02% FS error and <1LSB noise floor in 16-bit conversions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3002E/TO | 250mA max output, 600mV dropout at 250mA, no BYP pin, 1.6µA quiescent current | Lacks bypass pin for noise filtering; lower current rating limits RF PA use | Select when cost sensitivity outweighs RF noise performance and 300mA headroom is unnecessary |
| Torex XC6206P302MR-G | 300mA output, 300mV dropout at 300mA, no enable pin, 1µA shutdown current | Non-enable variant requires external FET for power gating; no logic-controlled shutdown | Select only for always-on applications where enable functionality is not required |
Compared with MCP1700-3002E/TO and XC6206P302MR-G, AP2210K-3.0TRG1 uniquely combines 300mA capability, 250mV dropout, integrated enable, and dedicated BYP pin-making it the only option among the three suitable for battery-powered RF transceivers requiring dynamic power control and ultra-low noise.
Availability
AP2210K-3.0TRG1 is available at Aetrix Electronics and suitable for cellular handset power management, wireless audio transceiver bias, and industrial sensor signal chain applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AP2210K-3.0TRG1 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-performance, energy-efficient solutions for consumer, industrial, and communications markets.
The AP2210 series belongs to Diodes' precision ULDO regulator product line, designed specifically for noise-sensitive RF and battery-constrained portable electronics requiring ultra-low dropout, low quiescent current, and robust protection features.
FAQ
What is the minimum input voltage required for AP2210K-3.0TRG1 to maintain regulation?
The minimum input voltage is 4.0V (VOUT + 1V), per datasheet Note 4. At 300mA load, the 250mV dropout requires VIN ≥ 3.25V to sustain 3.0V output-but 4.0V is recommended to ensure 75dB PSRR and avoid degraded ripple rejection. Below 4.0V, PSRR degrades significantly, impacting RF system sensitivity.
Does AP2210K-3.0TRG1 require an external bypass capacitor on the BYP pin?
Yes-a 100pF capacitor between BYP and GND is required for optimal noise performance. The datasheet specifies this capacitor reduces output noise and improves PSRR, especially critical in RF applications. Omitting it increases broadband noise by up to 3× and degrades 100Hz PSRR by ~15dB.
Can AP2210K-3.0TRG1 be used in automotive applications?
AP2210K-3.0TRG1 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP2210Q series) with PPAP support and IATF 16949 manufacturing, but this specific part is intended for commercial-temperature (-40°C to +125°C) industrial and consumer use only.
How does the reverse current protection function in AP2210K-3.0TRG1?
Internal circuitry blocks current flow from VOUT to VIN when VIN is absent or below VOUT, preventing backfeeding into upstream power sources. This occurs automatically-no external components needed-and remains active in both enabled and shutdown states, protecting batteries and shared supply rails in multi-rail systems.
AP2210K-3.0TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.2V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 15 mA
- PSRR:
- 75dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP2210K-3.0TRG1 FAQ
1.How can I place an order for AP2210K-3.0TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2210K-3.0TRG1 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 AP2210K-3.0TRG1 reliable?
The price and inventory of AP2210K-3.0TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2210K-3.0TRG1 is usually 5 days.
3.What payment methods are accepted for AP2210K-3.0TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2210K-3.0TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2210K-3.0TRG1?
AP2210K-3.0TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2210K-3.0TRG1 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 AP2210K-3.0TRG1?
For technical support, including AP2210K-3.0TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2210K-3.0TRG1 requirements.
6.How does Aetrix verify that AP2210K-3.0TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2210K-3.0TRG1 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 AP2210K-3.0TRG1 meets industry standards.
7.What is the process for return or replacement of AP2210K-3.0TRG1?
All AP2210K-3.0TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2210K-3.0TRG1, 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 AP2210K-3.0TRG1 part is unused and in its original packaging.
Return procedure for AP2210K-3.0TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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