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Diodes Incorporated AP2202K-3.3TRG1
- Part No.:
- AP2202K-3.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2202K-3.3TRG1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:61,466
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Product details
Overview
AP2202K-3.3TRG1 from Diodes Incorporated is a fixed-output 3.3V, 150mA ultra-low dropout (ULDO) linear regulator in SOT-23-5 package, delivering 165mV typical dropout at full load, ±1% output accuracy, and 75dB PSRR at 100Hz - designed for noise-sensitive RF power rails in battery-powered handheld devices.
For engineers reviewing the AP2202K-3.3TRG1 datasheet, AP2202K-3.3TRG1 pinout, AP2202K-3.3TRG1 application, or AP2202K-3.3TRG1 equivalent, key selection criteria include low-noise operation (260nV/√Hz), 1µA max shutdown current, reverse-current protection, logic-compatible enable input, and thermal/overcurrent safety features.
Technical Context
The AP2202K-3.3TRG1 integrates a bandgap reference, error amplifier, and PMOS pass transistor to achieve ultra-low dropout and high PSRR without requiring external compensation. Its internal architecture enables stable regulation with only 1.0µF input and 2.2µF output ceramic capacitors.
It implements CMOS/TTL-compatible enable control, thermal shutdown at +150°C, current limiting at 320–550mA, and reverse-current blocking via integrated MOSFET body diode isolation - all operating across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% - ensures precise biasing for 3.3V logic, RF ICs, and analog sensors without external feedback. |
| Max Output Current | 150mA - supports moderate-power subsystems like RF transceivers, camera modules, or MCU peripherals. |
| Dropout Voltage | 165mV at 150mA - enables operation from 3.465V input, critical for single-cell Li-ion or Li-poly systems under load. |
| PSRR | 75dB at 100Hz - suppresses low-frequency supply ripple from switching converters feeding the LDO input. |
| Output Noise | 260nV/√Hz - minimizes phase noise in VCOs, LNAs, and other RF signal-chain components. |
| Shutdown Current | 1µA maximum - extends battery life in standby modes of portable electronics. |
| Enable Threshold | VIL ≤ 0.4V / VIH ≥ 2.0V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT-23-5 surface-mount package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, lead-free, with exposed thermal pad on pin 2 (GND) for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 2.5V–13.2V DC; minimum 3.465V required for 3.3V output at 150mA due to 165mV dropout. |
| 2 (GND) | Ground reference and thermal pad | Primary return path and thermal conduction node; must be soldered to PCB copper pour for thermal performance. |
| 3 (EN) | Logic-enable control input | Active-high TTL/CMOS-compatible; pulls regulator into 1µA shutdown when ≤0.4V. |
| 4 (BYP) | Bypass capacitor connection | Connects 100pF capacitor to GND to reduce output noise and improve PSRR at high frequencies. |
| 5 (VOUT) | Regulated output voltage | Delivers stable 3.3V ±1% to load; requires 2.2µF ceramic output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 165mV at 150mA enables use with marginal input margins - e.g., 3.6V nominal Li-ion down to 3.465V under discharge. |
| Low-noise regulation | 260nV/√Hz output noise and 75dB PSRR preserve signal integrity in RF front-ends and precision analog circuits. |
| Reverse current protection | Integrated MOSFET blocking prevents backfeed from VOUT to VIN during shutdown or input loss - eliminates need for external diode. |
| Thermal & overcurrent protection | Auto-recovery shutdown at >+150°C junction temp and current limit at 320–550mA protect against sustained overload or PCB layout faults. |
| Logic-compatible enable | 0.4V/2.0V thresholds support direct interfacing with 1.8V and 3.3V microcontrollers without external level shifters. |
Applications
| Cellular Handset Power Rail | RF Transceiver Bias Supply |
|---|---|
|
Use Scenario: Providing clean 3.3V power to baseband processor I/O banks and memory interfaces in GSM/UMTS/LTE smartphones. IC Role / Device Role / Timing Role: ULDO regulator supplying low-noise, tightly regulated voltage to digital subsystems sensitive to supply ripple and dropout. Use Value: Enables reliable operation down to 3.465V input while maintaining ±1% output accuracy and minimizing system-level noise coupling. |
Use Scenario: Powering RF power amplifiers, low-noise amplifiers, and mixer stages in 2.4GHz/5GHz Wi-Fi or Bluetooth modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source isolating RF circuitry from noisy DC-DC converter outputs. Use Value: 260nV/√Hz noise and 75dB PSRR directly reduce phase noise and adjacent-channel interference in transmit/receive paths. |
| Digital Still Camera Sensor Core | Portable Medical Diagnostic Module |
|
Use Scenario: Delivering stable 3.3V to CMOS image sensor analog front-end and ADC reference circuitry. IC Role / Device Role / Timing Role: Precision voltage regulator ensuring consistent pixel response and low dark-current drift across temperature. Use Value: ±1% accuracy and 120µV/°C temperature coefficient minimize gain error and offset drift in image signal processing chains. |
Use Scenario: Powering analog signal conditioning, ECG/EEG front-end amplifiers, and low-power microcontrollers in handheld diagnostic tools. IC Role / Device Role / Timing Role: Safety-enhanced LDO with thermal/overcurrent protection and 1µA shutdown current for battery longevity. Use Value: Reverse-current blocking prevents cross-conduction in multi-rail medical designs; shutdown mode extends single-charge runtime beyond 100 hours. |
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 | 3.3V fixed, 250mA, 600mV dropout at 250mA, 18µA quiescent current | Higher dropout and quiescent current - less suitable for low-VIN or ultra-low-power RF use cases | Select if higher output current is needed and input headroom >0.6V is available. |
| Torex XC6206P332MR-G | 3.3V fixed, 150mA, 250mV dropout at 150mA, 1µA shutdown, no reverse-current protection | Lacks integrated reverse-current blocking - requires external diode in backfeed-prone topologies | Choose where board space allows discrete protection and PSRR >70dB is not required. |
Compared with MCP1700T-3302E/TT and XC6206P332MR-G, AP2202K-3.3TRG1 delivers superior low-dropout performance (165mV vs. ≥250mV), lower noise (260nV/√Hz), and built-in reverse-current blocking - making it optimal for compact, battery-critical RF and portable medical designs.
Availability
AP2202K-3.3TRG1 is available at Aetrix Electronics and suitable for cellular handsets, Wi-Fi modules, digital cameras, and portable medical diagnostics requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for AP2202K-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2202 series belongs to Diodes' high-performance ULDO regulator product line, engineered specifically for noise-sensitive, battery-operated RF and portable electronics demanding ultra-low dropout, low quiescent current, and robust protection features.
FAQ
What is the minimum input voltage required for AP2202K-3.3TRG1 to maintain regulation at 150mA?
The minimum input voltage is 3.465V - calculated as 3.3V output plus 165mV typical dropout. The datasheet recommends using at least VOUT + 0.5V (i.e., 3.8V) to ensure margin against worst-case dropout, temperature drift, and line/load regulation errors across –40°C to +125°C operation.
Does AP2202K-3.3TRG1 require an external bypass capacitor on the BYP pin?
Yes - a 100pF capacitor must be placed between BYP and GND to optimize high-frequency PSRR and reduce output noise. Omitting this capacitor degrades noise performance and may reduce PSRR above 10kHz; the capacitor must be placed as close as possible to pins 4 and 2 to minimize parasitic inductance.
Can AP2202K-3.3TRG1 be used in automotive applications?
No - AP2202K-3.3TRG1 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP2202Q series) with PPAP capability, IATF 16949 manufacturing, and extended qualification testing; those parts carry distinct part numbers and packaging markings.
How does the reverse-current protection function in AP2202K-3.3TRG1?
Reverse-current protection is implemented via an integrated PMOS pass transistor configured to block current flow from VOUT to VIN when the input is absent or lower than output voltage. This eliminates the need for an external series diode and prevents battery drain or system-level backfeed in multi-supply architectures.
AP2202K-3.3TRG1 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):
- 3.3V
- Voltage - Output (Max):
- -
- 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-3.3TRG1 FAQ
1.How can I place an order for AP2202K-3.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2202K-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 AP2202K-3.3TRG1 reliable?
The price and inventory of AP2202K-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 AP2202K-3.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2202K-3.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2202K-3.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2202K-3.3TRG1?
AP2202K-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2202K-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 AP2202K-3.3TRG1?
For technical support, including AP2202K-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2202K-3.3TRG1 requirements.
6.How does Aetrix verify that AP2202K-3.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2202K-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 AP2202K-3.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2202K-3.3TRG1?
All AP2202K-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2202K-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 AP2202K-3.3TRG1 part is unused and in its original packaging.
Return procedure for AP2202K-3.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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