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Diodes Incorporated AP2210K-ADJTRG1
- Part No.:
- AP2210K-ADJTRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2210K-ADJTRG1.pdf
- Description:
- IC REG LIN POS ADJ 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:55,041
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Product details
Overview
AP2210K-ADJTRG1 from Diodes Incorporated is a 300mA ultra-low dropout (ULDO) linear regulator with adjustable output voltage, 250mV typical dropout at full load, ±1% output accuracy, 75dB PSRR at 100Hz, and 1µA max standby current. It operates from 2.5V to 13.2V input, supports logic-compatible enable control, and delivers low-noise power for RF signal chains and battery-powered portable electronics.
For engineers reviewing the AP2210K-ADJTRG1 datasheet, AP2210K-ADJTRG1 pinout, AP2210K-ADJTRG1 application, or AP2210K-ADJTRG1 equivalent, this device is selected for noise-sensitive analog/RF subsystems requiring stable, low-quiescent-current regulation with thermal and overcurrent protection in space-constrained SOT-23-5 layouts.
Technical Context
The AP2210K-ADJTRG1 uses a bandgap-referenced error amplifier driving a PMOS pass transistor to achieve ultra-low dropout and high PSRR. Its BYP/ADJ pin accepts an external resistor divider to set output voltage per VOUT = 1.25V × (1 + R2/R1), enabling precise customization across the 1.25V–13.2V range.
It integrates CMOS/TTL-compatible enable logic, thermal shutdown triggered at +150°C junction temperature, current limiting at 450–900mA, reverse current blocking, and internal compensation for stability with 2.2µF ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA maximum - supports moderate-power analog/RF ICs without thermal derating in SOT-23-5. |
| Dropout Voltage | 250mV typical at 300mA - enables operation with minimal headroom (e.g., 3.3V out from 3.55V input). |
| Output Accuracy | ±1% over -40°C to +125°C - ensures tight voltage tolerance for precision ADC references and RF bias rails. |
| PSRR | 75dB at 100Hz - suppresses low-frequency supply ripple from switching converters feeding sensitive RF stages. |
| Standby Current | 1µA maximum - extends battery life in always-on monitoring or sleep-mode subsystems. |
| Output Noise | 260nV/√Hz - minimizes phase noise degradation in VCOs, LNAs, and PLL power domains. |
| Enable Threshold | VIL ≤ 0.4V (shutdown), VIH ≥ 2.0V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT-23-5 package: 2.9mm × 1.6mm × 1.1mm body, matte tin-plated leads, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 2.5V–13.2V unregulated input; requires 1.0µF ceramic decoupling close to pin. |
| 2 (GND) | Ground reference | Common return path for input/output currents and internal regulator circuitry; must be low-impedance. |
| 3 (EN) | Enable control input | CMOS/TTL-compatible logic input; high = active regulation, low = 1µA shutdown mode. |
| 4 (BYP/ADJ) | Adjust/bypass terminal | Connects to resistor divider for output voltage setting; 100pF bypass capacitor reduces output noise. |
| 5 (VOUT) | Regulated output | Delivers adjustable voltage (1.25V–13.2V); requires 2.2µF ceramic output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 250mV at 300mA enables use with single-cell Li-ion or multi-cell alkaline inputs. |
| Low-noise architecture | 260nV/√Hz output noise and 75dB PSRR preserve signal integrity in RF front-ends. |
| Adjustable output | VOUT = 1.25V × (1 + R2/R1) allows precise rail generation without custom fixed-voltage variants. |
| Integrated protections | Thermal shutdown, current limit, and reverse current blocking prevent damage during fault conditions. |
| Logic-compatible enable | Direct interface with microcontroller GPIO eliminates need for external level shifters or pull-ups. |
Applications
| RF Power Amplifier Biasing | Portable GPS Receiver LNA Supply |
|---|---|
|
Use Scenario: Providing clean, stable bias voltage to GaAs pHEMT power amplifiers in cellular handsets and IoT transceivers. IC Role / Device Role / Timing Role: ULDO regulator delivering low-noise, tightly regulated DC bias under dynamic RF load conditions. Use Value: 260nV/√Hz noise and 75dB PSRR prevent AM-to-PM distortion and adjacent channel leakage in transmit paths. |
Use Scenario: Powering low-noise amplifiers in battery-operated GPS modules where EMI immunity and quiescent current matter. IC Role / Device Role / Timing Role: Adjustable-output regulator supplying 2.8V–3.3V LNA rails with minimal thermal rise and shutdown control. Use Value: 1µA shutdown current extends battery runtime during satellite acquisition pauses; 250mV dropout preserves headroom on 3.6V Li-ion cells. |
| Medical Wearable Sensor Signal Chain | Industrial Wireless Sensor Node MCU Core Rail |
|
Use Scenario: Regulating power for precision analog front-ends (AFE) in ECG/PPG wearables operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-quiescent, high-accuracy regulator generating 1.8V or 3.3V for ADCs, op-amps, and reference buffers. Use Value: ±1% output accuracy ensures consistent gain calibration; 120µV/°C tempco avoids drift-induced measurement errors. |
Use Scenario: Supplying the core voltage rail (1.2V–3.3V) for ARM Cortex-M MCUs in LoRaWAN or NB-IoT sensor nodes. IC Role / Device Role / Timing Role: Enable-controlled ULDO providing fast wake-up from deep-sleep states with minimal voltage droop. Use Value: Logic-compatible EN pin synchronizes power-up with MCU reset assertion; 250mV dropout maximizes usable battery voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826T-ADJ/DC | Higher 350mV dropout at 300mA; 2.5µA quiescent current; no reverse current protection. | Lacks reverse current blocking - unsuitable for systems with back-fed outputs or shared rails. | Choose when cost sensitivity outweighs noise/efficiency requirements and reverse current risk is absent. |
| TLS850B2TE/V33 | Automotive-grade AEC-Q100 qualified; 500mA output; 400mV dropout; integrated watchdog timer. | Designed for automotive infotainment and ADAS; includes system supervision features not needed in consumer portables. | Choose only for automotive programs requiring PPAP and IATF 16949 traceability; over-specified for industrial/portable use. |
Compared with MCP1826T-ADJ/DC and TLS850B2TE/V33, the AP2210K-ADJTRG1 offers superior noise performance (260nV/√Hz vs. >400nV/√Hz), lower dropout (250mV vs. 350–400mV), and reverse current protection - critical for battery-backed and multi-rail systems.
Availability
AP2210K-ADJTRG1 is available at Aetrix Electronics and suitable for RF power amplifier biasing, portable GPS receiver LNA supply, medical wearable sensor signal chain, and industrial wireless sensor node MCU core rail applications requiring stable component supply across production lifecycles.
Supply support for AP2210K-ADJTRG1 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 AP2210 product line delivers ultra-low-noise, ultra-low-dropout linear regulators optimized for battery-powered and RF-sensitive systems where efficiency, precision, and reliability are critical.
FAQ
What is the minimum input voltage required for AP2210K-ADJTRG1 to maintain regulation at 300mA output?
The minimum input voltage is VOUT + 250mV (typical dropout). For example, with a 3.3V output, VIN must be ≥3.55V. The datasheet recommends VIN ≥ VOUT + 1V (i.e., ≥4.3V) to ensure optimal PSRR and avoid regulation loss under worst-case conditions including temperature and load transients.
Can AP2210K-ADJTRG1 be used without the BYP/ADJ capacitor in adjustable mode?
No. A 100pF capacitor between BYP/ADJ and GND is mandatory for low-noise operation and stability in adjustable configurations. Omitting it degrades PSRR by up to 20dB and increases output noise significantly, compromising RF and precision analog performance.
Does AP2210K-ADJTRG1 require an external output capacitor, and what type is recommended?
Yes. A minimum 2.2µF ceramic capacitor (X5R/X7R, 6.3V rating) is required at VOUT for stability and transient response. Tantalum or aluminum electrolytic capacitors are not recommended due to ESR and aging effects that may cause oscillation or poor load step recovery.
How does the enable pin behave during power-up, and is an external pull-up required?
The EN pin has no internal pull-up; it defaults to high-impedance. To ensure predictable startup, an external pull-up resistor (e.g., 100kΩ to VIN) is required unless driven actively by a controller. Without it, the device may remain in shutdown or exhibit erratic behavior during brown-out conditions.
AP2210K-ADJTRG1 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.2V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 12.7V
- 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-ADJTRG1 FAQ
1.How can I place an order for AP2210K-ADJTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2210K-ADJTRG1 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-ADJTRG1 reliable?
The price and inventory of AP2210K-ADJTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2210K-ADJTRG1 is usually 5 days.
3.What payment methods are accepted for AP2210K-ADJTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2210K-ADJTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2210K-ADJTRG1?
AP2210K-ADJTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2210K-ADJTRG1 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-ADJTRG1?
For technical support, including AP2210K-ADJTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2210K-ADJTRG1 requirements.
6.How does Aetrix verify that AP2210K-ADJTRG1 is sourced from the original manufacturer or authorized distributors?
All AP2210K-ADJTRG1 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-ADJTRG1 meets industry standards.
7.What is the process for return or replacement of AP2210K-ADJTRG1?
All AP2210K-ADJTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2210K-ADJTRG1, 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-ADJTRG1 part is unused and in its original packaging.
Return procedure for AP2210K-ADJTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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