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Diodes Incorporated AP2202K-ADJTRE1
- Part No.:
- AP2202K-ADJTRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2202K-ADJTRE1.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:914
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Product details
Overview
AP2202K-ADJTRE1 from Diodes Incorporated is an adjustable 150mA ultra-low dropout (ULDO) linear regulator delivering ±1% output voltage accuracy, 165mV dropout at full load, 75dB PSRR at 100Hz, and 1µA shutdown current. It operates from 2.5V to 13.2V input, supports external resistor-set output voltages down to 2.3V, and targets noise-sensitive RF power rails in portable electronics.
For engineers reviewing the AP2202K-ADJTRE1 datasheet, AP2202K-ADJTRE1 pinout, AP2202K-ADJTRE1 application, or AP2202K-ADJTRE1 equivalent, key selection criteria include adjustable output configuration, SOT-23-5 thermal performance (θJA = 200°C/W), reverse current protection, and logic-compatible enable control with 0.4V VIL.
Technical Context
The AP2202K-ADJTRE1 implements a bandgap-referenced error amplifier driving a PMOS pass transistor, enabling ultra-low dropout and reverse current blocking. Its BYP/ADJ pin accepts either a bypass capacitor for noise reduction or a resistor divider for output voltage programming (VOUT = 1.25V × (1 + R2/R1)).
Thermal shutdown, overcurrent limiting (320–550mA), and internal current limit protection operate independently of external components. The device maintains 75dB PSRR at 100Hz with only 100pF BYP-to-GND capacitance and achieves ±1% initial accuracy across -40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150mA maximum continuous - supports power delivery to RF transceivers and baseband ICs without thermal derating in SOT-23-5. |
| Dropout Voltage | 165mV at 150mA - enables stable 2.8V output from a 3.3V battery rail with ≥0.5V headroom margin. |
| PSRR | 75dB at 100Hz - suppresses low-frequency switching noise from DC-DC converters feeding the LDO input. |
| Output Accuracy | ±1% at +25°C - ensures precise biasing for analog front-ends and ADC reference supplies. |
| Standby Current | 1µA max in shutdown - extends battery life in always-on wireless sensor nodes during sleep mode. |
| Enable Threshold | VIL ≤ 0.4V, VIH ≥ 2.0V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Resistance | θJA = 200°C/W (SOT-23-5) - defines junction-to-ambient rise under PCB layout constraints typical of handheld PCBs. |
Pinout & Package
SOT-23-5 package: 2.9mm × 1.6mm × 1.1mm body, exposed pad not electrically connected, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 2.5V–13.2V; requires 1.0µF ceramic input capacitor for stability and transient response. |
| 2 (GND) | Ground reference | Low-impedance return path for regulator quiescent current and load current; connects to PCB ground plane. |
| 3 (EN) | Logic-enable control | CMOS/TTL-compatible; drives regulator into 1µA shutdown when pulled ≤0.4V. |
| 4 (BYP/ADJ) | Bypass or feedback node | Connect 100pF to GND for low-noise operation; or use resistor divider to set VOUT = 1.25V × (1 + R2/R1). |
| 5 (VOUT) | Regulated output | Delivers adjustable output (≥2.3V); requires 2.2µF ceramic output capacitor for loop stability and PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Dropout | 165mV at 150mA enables operation from single-cell Li-ion (3.0V min) while regulating 2.8V outputs. |
| Reverse Current Protection | Prevents backflow from VOUT to VIN during input brownout - eliminates need for external blocking diode. |
| Adjustable Output | Supports 2.3V–13.2V output via external resistors; minimum 2.3V avoids instability in ADJ-mode configurations. |
| High PSRR at Low Frequency | 75dB at 100Hz rejects ripple from buck converter switching frequencies and audio-band interference. |
| Integrated Thermal Shutdown | Activates at +150°C junction temperature and auto-recovers after cooldown - protects against sustained overload. |
Applications
| RF Power Amplifier Bias | Digital Camera Image Sensor Supply |
|---|---|
|
Use Scenario: Powers 2.8V PA stage in LTE/Wi-Fi modules where supply noise directly impacts EVM and ACLR. IC Role / Device Role / Timing Role: Ultra-low-noise voltage regulator providing clean bias under dynamic load transients. Use Value: 260nV/√Hz output noise and 75dB PSRR maintain RF signal integrity without requiring additional LC filtering. |
Use Scenario: Supplies CIS analog core and ADC reference in compact digital still cameras with tight space constraints. IC Role / Device Role / Timing Role: Adjustable ULDO delivering precise, ripple-free voltage to image sensor analog blocks. Use Value: ±1% accuracy and <120µV/°C tempco ensure consistent pixel response and color fidelity across operating temperature. |
| Wireless Headset Audio Codec | Industrial IoT Sensor Node MCU Core |
|
Use Scenario: Powers audio codec's analog supply rail in Bluetooth headsets where battery life and SNR are critical. IC Role / Device Role / Timing Role: Low-quiescent, enable-controlled regulator supporting rapid wake/sleep cycling. Use Value: 1µA shutdown current extends shelf life; 165mV dropout maximizes usable battery voltage range. |
Use Scenario: Provides regulated 3.0V core supply to ARM Cortex-M0+ MCU in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Enable-synchronized power domain controller managing system-level low-power states. Use Value: Logic-compatible EN pin allows direct GPIO control; thermal shutdown prevents field failure during enclosure overheating. |
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 250mV dropout at 150mA; 2.2µA quiescent current; no reverse current protection. | Lacks reverse current blocking - requires external diode in battery backup paths. | Choose when higher dropout is acceptable and board space permits discrete protection. |
| TLS850F0TESA1 | Automotive-grade AEC-Q100 qualified; fixed 5.0V output only; 3.5µA IQ; integrated watchdog. | Not adjustable; designed for automotive infotainment power domains, not portable RF systems. | Use only in automotive environments requiring PPAP documentation and extended temperature validation. |
Compared with MCP1826T-ADJ/DC and TLS850F0TESA1, the AP2202K-ADJTRE1 uniquely combines adjustable output, reverse current blocking, and 165mV dropout in a 5-pin SOT-23 package - making it optimal for space-constrained, battery-powered RF applications demanding minimal input headroom and zero backfeed risk.
Availability
AP2202K-ADJTRE1 is available at Aetrix Electronics and suitable for RF power amplifiers, digital camera image sensors, wireless headset audio codecs, and industrial IoT sensor node MCUs requiring stable component supply with guaranteed long-term sourcing.
Supply support for AP2202K-ADJTRE1 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 solutions for power management, signal integrity, and connectivity applications.
The AP2202 product line delivers ultra-low-noise, low-dropout regulators optimized for battery-powered portable electronics and RF subsystems where power efficiency and signal purity are critical.
FAQ
What is the minimum output voltage achievable with AP2202K-ADJTRE1?
The AP2202K-ADJTRE1 supports a minimum output voltage of 2.3V when configured in adjustable mode. This is defined by the internal 1.25V reference and practical resistor-divider limitations - lower values risk instability due to reduced feedback loop gain and increased sensitivity to resistor tolerance.
Does AP2202K-ADJTRE1 require an external bypass capacitor on the BYP/ADJ pin?
Yes - a 100pF capacitor between BYP/ADJ and GND is mandatory for low-noise operation. When used in adjustable mode, this capacitor remains in parallel with the R1–R2 divider and must be placed close to the pin to minimize parasitic inductance that degrades PSRR above 10kHz.
How does thermal shutdown behave during sustained overload?
Thermal shutdown activates at +150°C junction temperature and forces the output to turn off. Recovery is automatic once the junction cools below +135°C hysteresis threshold. During repeated cycling, average output current is limited by ambient temperature and PCB copper area - data sheet θJA = 200°C/W assumes minimal copper pour.
Can AP2202K-ADJTRE1 be used with ceramic output capacitors only?
Yes - the AP2202K-ADJTRE1 is stable with 2.2µF X5R/X7R ceramic output capacitors and does not require ESR-based damping. Using ceramic capacitors improves transient response and reduces board area versus tantalum alternatives, aligning with modern portable design practices.
AP2202K-ADJTRE1 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):
- 2.3V
- Voltage - Output (Max):
- 12.85V
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 2.5 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
AP2202K-ADJTRE1 FAQ
1.How can I place an order for AP2202K-ADJTRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2202K-ADJTRE1 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 AP2202K-ADJTRE1 reliable?
The price and inventory of AP2202K-ADJTRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2202K-ADJTRE1 is usually 5 days.
3.What payment methods are accepted for AP2202K-ADJTRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2202K-ADJTRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2202K-ADJTRE1?
AP2202K-ADJTRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2202K-ADJTRE1 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 AP2202K-ADJTRE1?
For technical support, including AP2202K-ADJTRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2202K-ADJTRE1 requirements.
6.How does Aetrix verify that AP2202K-ADJTRE1 is sourced from the original manufacturer or authorized distributors?
All AP2202K-ADJTRE1 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 AP2202K-ADJTRE1 meets industry standards.
7.What is the process for return or replacement of AP2202K-ADJTRE1?
All AP2202K-ADJTRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2202K-ADJTRE1, 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 AP2202K-ADJTRE1 part is unused and in its original packaging.
Return procedure for AP2202K-ADJTRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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