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Diodes Incorporated AP2120N-3.3TRG1
- Part No.:
- AP2120N-3.3TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2120N-3.3TRG1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:912,145
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Product details
Overview
AP2120N-3.3TRG1 from Diodes Incorporated is a high-speed, extremely low-noise CMOS-based positive LDO regulator delivering 3.3V output at up to 150mA load current with 200mV typical dropout at 100mA, 65dB PSRR at 1kHz, and 30µVrms output noise (10Hz–100kHz). It operates from 3.8V to 6V input and targets precision power rails in portable wireless and imaging systems.
For engineers reviewing the AP2120N-3.3TRG1 datasheet, AP2120N-3.3TRG1 pinout, AP2120N-3.3TRG1 application, or AP2120N-3.3TRG1 equivalent, key selection criteria include ultra-low noise performance, ceramic capacitor compatibility down to 1µF, ±2% output voltage accuracy over -40°C to +85°C, and SOT-23 package thermal resistance of 250°C/W.
Technical Context
The AP2120N-3.3TRG1 integrates a precision voltage reference, error amplifier, resistor feedback network, and current-limit protection circuit in a single CMOS die. Its architecture enables fast line and load transient response without external compensation.
It achieves stable regulation using only 1µF ceramic input and output capacitors with ESR between 0.01Ω and 100Ω. The device maintains 3.3V ±2% output accuracy across 1mA–150mA load, 3.8V–6V input, and -40°C to +85°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±2% (3.234V–3.366V), ensuring stable MCU core or RF IC supply under full operating conditions |
| Dropout Voltage | 200mV typical at 100mA (300mV max), enabling operation from 3.8V input while sustaining 3.3V output |
| PSRR | 65dB typical at 1kHz, suppressing switching noise from upstream DC/DC converters |
| Output Noise | 30µVrms (10Hz–100kHz), critical for noise-sensitive analog/RF circuitry like ADCs or VCOs |
| Quiescent Current | 25µA typical, minimizing battery drain in always-on sensor or standby subsystems |
| Load Regulation | 12mV typical (1mA–80mA), limiting output shift during dynamic processor load changes |
| Line Regulation | 4mV typical (3.8V–6V input), maintaining tight voltage control as battery discharges |
Pinout & Package
SOT-23 (N package), 3-pin surface-mount package with 250°C/W junction-to-ambient thermal resistance, moisture sensitivity level 1 per J-STD-020, and lead-free matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference terminal | Low-impedance return path for regulator feedback and load current; must connect to clean analog ground plane |
| 2 VOUT | Regulated output voltage | Delivers stable 3.3V to load; requires ≥1µF ceramic capacitor placed adjacent to pin for stability |
| 3 VIN | Input voltage supply | Accepts 3.8V–6V input; requires ≥1µF ceramic decoupling capacitor within 2mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 30µVrms output noise enables direct powering of RF transceivers and precision ADCs without additional filtering |
| Ceramic capacitor compatibility | Stable with 1µF output capacitor (ESR 0.01Ω–100Ω), reducing BOM count and PCB area vs. tantalum alternatives |
| High PSRR at audio frequencies | 65dB rejection at 1kHz suppresses ripple from buck converter switching harmonics in mixed-signal systems |
| Precision output accuracy | ±2% tolerance over temperature and load ensures reliable operation of 3.3V I/O interfaces and memory subsystems |
| Low quiescent current | 25µA typical draw extends battery life in IoT edge nodes and wearable devices with intermittent wake cycles |
Applications
| Mobile Phone Baseband Power | Wireless Headset Audio Supply |
|---|---|
Use Scenario: Powers baseband processor core and memory interface in dual-SIM smartphones with Li-ion battery input. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying digital logic rail with fast transient response to burst data transmission loads. Use Value: 12mV load regulation prevents logic errors during CPU frequency scaling; 30µVrms noise avoids bit errors in high-speed DDR interface. |
Use Scenario: Supplies analog front-end and Bluetooth radio in compact true-wireless stereo earbuds. IC Role / Device Role / Timing Role: Low-noise bias source for microphone preamp and RF synthesizer VCO. Use Value: 65dB PSRR blocks 2.4GHz switching noise from charging circuitry; 25µA quiescent current extends 5-hour playback runtime. |
| Digital Camera Image Sensor Bias | Portable Medical Pulse Oximeter |
Use Scenario: Provides clean 3.3V bias to CMOS image sensor and ISP in action cameras. IC Role / Device Role / Timing Role: Dedicated low-noise LDO isolating sensor analog supply from noisy digital domain. Use Value: 30µVrms noise prevents fixed-pattern noise in low-light video; ±2% accuracy maintains consistent ADC reference scaling. |
Use Scenario: Powers photodiode signal chain and microcontroller in handheld pulse oximeters using coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low IQ regulator sustaining sensor measurement cycles during extended standby. Use Value: 25µA quiescent current enables >7-day battery life; 200mV dropout allows operation until battery reaches 3.5V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 250mV dropout at 250mA; 17µVrms noise; 6µA IQ; SOT-23-5 package | Lower noise but higher dropout; requires 5-pin layout and different footprint | Select when ultra-low IQ dominates over dropout and board space is available for 5-pin variant |
| Torex XC6206P332MR-G | 200mV dropout at 100mA; 40µVrms noise; 1µA IQ; same SOT-23-3 package | Higher output noise; significantly lower IQ enables multi-year coin-cell operation | Select for ultra-long-life battery applications where 40µVrms noise is acceptable for digital-only loads |
Compared with MCP1700T-3302E/TT, AP2120N-3.3TRG1 offers lower dropout and identical pinout but higher IQ; versus XC6206P332MR-G, it delivers 10µVrms less noise at the cost of 24µA higher quiescent current-critical for RF/analog signal chains.
Availability
AP2120N-3.3TRG1 is available at Aetrix Electronics and suitable for mobile phone baseband power, wireless headset audio supply, digital camera image sensor bias, and portable medical pulse oximeter designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP2120N-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 company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q100 for automotive use.
The AP2120 series belongs to Diodes' high-performance LDO portfolio, designed specifically for battery-powered portable electronics demanding ultra-low noise, low dropout, and ceramic capacitor compatibility.
FAQ
What is the minimum input voltage required for AP2120N-3.3TRG1 to maintain regulation?
The AP2120N-3.3TRG1 requires a minimum input voltage of 3.8V to sustain 3.3V output at full 150mA load, based on its 500mV maximum dropout specification under those conditions. At lighter loads (e.g., 10mA), input can drop to 3.32V (3.3V + 20mV) while remaining in regulation, per the 20mV typical dropout value.
Can AP2120N-3.3TRG1 be used with tantalum output capacitors?
No-AP2120N-3.3TRG1 is optimized for ceramic capacitors with ESR between 0.01Ω and 100Ω. Tantalum capacitors typically exhibit ESR below 0.01Ω and lack the necessary zero placement for stability; using them risks oscillation and output voltage overshoot during load transients.
Does AP2120N-3.3TRG1 include thermal shutdown protection?
Yes-the AP2120N-3.3TRG1 incorporates thermal shutdown that activates at +150°C junction temperature, as specified in Absolute Maximum Ratings. Recovery occurs automatically once junction temperature falls below the hysteresis threshold, enabling robust operation under sustained high-power dissipation.
Is AP2120N-3.3TRG1 qualified for automotive applications?
AP2120N-3.3TRG1 itself is not AEC-Q100 qualified; however, Diodes Incorporated offers automotive-grade variants (e.g., AP2120Q series) manufactured in IATF 16949-certified facilities with PPAP capability. For automotive designs, contact Diodes directly to obtain qualified equivalents with full change control documentation.
AP2120N-3.3TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (1kHz)
- Control Features:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP2120N-3.3TRG1 FAQ
1.How can I place an order for AP2120N-3.3TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2120N-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 AP2120N-3.3TRG1 reliable?
The price and inventory of AP2120N-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 AP2120N-3.3TRG1 is usually 5 days.
3.What payment methods are accepted for AP2120N-3.3TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2120N-3.3TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2120N-3.3TRG1?
AP2120N-3.3TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2120N-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 AP2120N-3.3TRG1?
For technical support, including AP2120N-3.3TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2120N-3.3TRG1 requirements.
6.How does Aetrix verify that AP2120N-3.3TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2120N-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 AP2120N-3.3TRG1 meets industry standards.
7.What is the process for return or replacement of AP2120N-3.3TRG1?
All AP2120N-3.3TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2120N-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 AP2120N-3.3TRG1 part is unused and in its original packaging.
Return procedure for AP2120N-3.3TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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