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Diodes Incorporated AP2120N-3.0TRG1
- Part No.:
- AP2120N-3.0TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2120N-3.0TRG1.pdf
- Description:
- IC REG LINEAR 3V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:31,941
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Product details
Overview
AP2120N-3.0TRG1 from Diodes Incorporated is a high-speed, extremely low-noise CMOS-based positive LDO regulator delivering a fixed 3.0V output with ±2% accuracy, 200mV typical dropout at 100mA, 25µA typical quiescent current, and 65dB PSRR at 1kHz-designed for powering noise-sensitive analog circuitry in portable battery-powered devices.
For engineers reviewing the AP2120N-3.0TRG1 datasheet, AP2120N-3.0TRG1 pinout, AP2120N-3.0TRG1 application, or AP2120N-3.0TRG1 equivalent, key selection criteria include dropout voltage under load, RMS output noise (30µVrms at 10Hz–100kHz), thermal resistance (250°C/W), compatibility with 1µF ceramic capacitors, and SOT-23 package footprint constraints.
Technical Context
The AP2120N-3.0TRG1 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.0V output setting, and current-limit protection circuitry. Its CMOS process enables ultra-low quiescent current and excellent line/load regulation-4mV and 12mV typical respectively-across -40°C to +85°C operating range.
It achieves high power supply ripple rejection via internal feedback compensation optimized for stability with 1µF ceramic output capacitors (ESR 0.01Ω–100Ω). The device features fast line and load transient response, enabling use in dynamic power domains such as RF front-ends and precision ADC/DAC supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±2% - ensures stable biasing for 3.0V logic, sensors, and analog ICs without external trimming |
| Dropout Voltage | 200mV typ. @ 100mA - supports operation down to VIN = 3.2V, extending battery runtime in single-cell Li-ion systems |
| Quiescent Current | 25µA typ. - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up circuits |
| PSRR | 65dB typ. @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding sensitive analog rails |
| RMS Output Noise | 30µVrms @ 10Hz–100kHz - preserves signal integrity in audio codecs, precision amplifiers, and RF synthesizers |
| Thermal Resistance | 250°C/W (θJA, SOT-23) - defines maximum continuous power dissipation (e.g., 240mW at TA = 85°C) before derating |
| Output Current Limit | 250mA max - provides short-circuit protection while supporting peak loads in portable SoC power domains |
Pinout & Package
SOT-23 (N package), 3-pin surface-mount package with moisture sensitivity level 1 per J-STD-020; tin-plated leads, RoHS-compliant, weight ≈ 0.009g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference terminal | Return path for output current and internal bias; requires low-impedance PCB connection to minimize noise coupling |
| 2 VOUT | Regulated output voltage | Delivers stable 3.0V to load; must be decoupled with ≥1µF ceramic capacitor placed adjacent to pin |
| 3 VIN | Input voltage supply | Accepts 3.5V–6.0V input; requires ≥1µF ceramic input capacitor to suppress source impedance and high-frequency noise |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor compatibility | Stable with 1µF ceramic output caps (0.01Ω–100Ω ESR), reducing BOM count and board space vs. tantalum alternatives |
| High accuracy output | ±2% initial tolerance ensures reliable operation of 3.0V I/O interfaces and memory without margining overhead |
| Fast transient response | Minimal output voltage dip during 0→150mA load steps-critical for burst-mode processors and wireless transceivers |
| Ultra-low noise performance | 30µVrms noise floor avoids degradation of SNR in audio paths, PLL VCO supplies, and sensor signal chains |
| Wide input voltage range | Operates from 3.5V to 6.0V, accommodating both single-cell Li-ion (3.0–4.2V) and dual-cell alkaline inputs |
Applications
| Mobile Phone Baseband Power | Wireless Headset Audio Supply |
|---|---|
Use Scenario: Powers baseband processor I/O and auxiliary analog blocks in compact smartphone designs. IC Role / Device Role / Timing Role: Primary 3.0V LDO for interface voltage translation and low-noise analog rail generation. Use Value: 200mV dropout extends usable battery range; 30µVrms noise prevents audible artifacts in voice call processing. |
Use Scenario: Supplies codec and Bluetooth radio in true wireless stereo (TWS) earbuds. IC Role / Device Role / Timing Role: Low-quiescent-current LDO for always-on audio subsystems requiring minimal standby drain. Use Value: 25µA IQ enables multi-day shelf life; 65dB PSRR rejects noise from RF switching and digital core domains. |
| Digital Camera Sensor Bias | Portable Medical Pulse Oximeter |
Use Scenario: Provides clean 3.0V bias to CMOS image sensor analog front-end and ADC reference. IC Role / Device Role / Timing Role: Precision low-noise voltage source for image signal chain integrity. Use Value: 30µVrms noise directly limits achievable SNR; ±2% accuracy maintains consistent exposure calibration across units. |
Use Scenario: Powers photodiode amplifier and analog signal conditioning in handheld pulse oximeters. IC Role / Device Role / Timing Role: Stable, low-drift 3.0V supply for critical analog measurement circuitry. Use Value: Excellent load regulation (12mV) ensures consistent LED drive current and SpO₂ calculation accuracy under varying battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | Higher dropout (300mV @ 100mA), lower PSRR (55dB @ 1kHz), same 3.0V output and SOT-23-3 package | Less suitable for low-VIN battery systems; reduced noise suppression in mixed-signal environments | Select when cost sensitivity outweighs noise/dropout requirements and thermal budget allows higher θJA |
| Torex XC6206P302MR-G | Lower quiescent current (1µA), but higher noise (40µVrms), no current limit circuit, same 3.0V output | Better for ultra-low-power sleep modes; unsuitable for fault-prone or high-transient-load applications | Prefer for energy-harvesting or coin-cell applications where IQ dominates lifetime; avoid where short-circuit robustness is required |
Compared with MCP1700T-3002E/MB and XC6206P302MR-G, the AP2120N-3.0TRG1 delivers superior noise performance and tighter output accuracy at moderate IQ, making it optimal for battery-powered analog-intensive systems requiring both efficiency and signal fidelity.
Availability
AP2120N-3.0TRG1 is available at Aetrix Electronics and suitable for mobile phone baseband power, wireless headset audio supply, digital camera sensor bias, and portable medical pulse oximeter applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AP2120N-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-reliability power management, signal integrity, and protection solutions for industrial, consumer, and automotive markets.
The AP2120 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for battery-powered portable electronics demanding ultra-low noise, low dropout, and minimal quiescent current in space-constrained SOT-23 packages.
FAQ
What is the minimum input voltage required for stable 3.0V output at 150mA load?
The AP2120N-3.0TRG1 requires VIN ≥ 3.5V for stable 3.0V output at 150mA, based on its typical dropout of 300mV at that load. Below 3.5V, output voltage drops linearly with input; operation below 3.5V is only viable at reduced load currents or with derated performance.
Can AP2120N-3.0TRG1 be used with 0.47µF output capacitance?
No-Diodes specifies a minimum 1µF ceramic output capacitor for stability. Using 0.47µF risks oscillation or poor transient response due to insufficient phase margin; the device's compensation is optimized for ≥1µF with ESR between 0.01Ω and 100Ω.
Does AP2120N-3.0TRG1 include thermal shutdown protection?
No-the AP2120N-3.0TRG1 does not integrate thermal shutdown. It relies on external thermal design (PCB copper area, ambient temperature control) and its 250°C/W θJA rating to stay within the +150°C absolute maximum junction temperature. Continuous operation above rated power requires thermal derating.
Is AP2120N-3.0TRG1 qualified for automotive applications?
No-AP2120N-3.0TRG1 is specified for industrial temperature range (-40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Diodes offers the AP7361 series (AEC-Q100 Grade 1) or contact Diodes directly for PPAP-capable variants manufactured in IATF 16949-certified facilities.
AP2120N-3.0TRG1 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):
- 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-3.0TRG1 FAQ
1.How can I place an order for AP2120N-3.0TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2120N-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 AP2120N-3.0TRG1 reliable?
The price and inventory of AP2120N-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 AP2120N-3.0TRG1 is usually 5 days.
3.What payment methods are accepted for AP2120N-3.0TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2120N-3.0TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2120N-3.0TRG1?
AP2120N-3.0TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2120N-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 AP2120N-3.0TRG1?
For technical support, including AP2120N-3.0TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2120N-3.0TRG1 requirements.
6.How does Aetrix verify that AP2120N-3.0TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2120N-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 AP2120N-3.0TRG1 meets industry standards.
7.What is the process for return or replacement of AP2120N-3.0TRG1?
All AP2120N-3.0TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2120N-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 AP2120N-3.0TRG1 part is unused and in its original packaging.
Return procedure for AP2120N-3.0TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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