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Diodes Incorporated AP2120N-5.0TRG1
- Part No.:
- AP2120N-5.0TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2120N-5.0TRG1.pdf
- Description:
- IC REG LINEAR 5V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,206
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Product details
Overview
AP2120N-5.0TRG1 from Diodes Incorporated is a high-speed, extremely low-noise 5.0V fixed-output LDO regulator in SOT-23 package, delivering up to 150mA output current with 200mV typical dropout at 100mA, 65dB PSRR at 1kHz, and 30µVrms output noise (10Hz–100kHz). It serves as a precision local power rail for noise-sensitive analog and RF circuitry in portable battery-powered systems.
For engineers reviewing the AP2120N-5.0TRG1 datasheet, AP2120N-5.0TRG1 pinout, AP2120N-5.0TRG1 application, or AP2120N-5.0TRG1 equivalent, key selection criteria include dropout voltage under load, RMS noise performance at target VOUT, PSRR across audio and switching frequencies, thermal resistance in SOT-23, and compatibility with 1µF ceramic output capacitors.
Technical Context
The AP2120N-5.0TRG1 employs a CMOS-based error amplifier with internal voltage reference and resistor network to regulate output precisely at 5.0V ±2%. Its architecture enables fast line and load transient response without external compensation.
It integrates current-limit protection (50mA short-circuit limit), operates over -40°C to +85°C junction temperature, and supports input voltages from 2V to 6V - enabling use after primary DC/DC converters or directly from Li-ion or dual-cell alkaline sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±2% - ensures stable logic-level supply for 5V microcontrollers and analog sensors within tolerance limits. |
| Dropout Voltage | 200mV typ. @ 100mA - allows regulation from 5.2V input, supporting single-cell LiFePO₄ or regulated 5.5V rails. |
| PSRR | 65dB typ. @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding sensitive ADCs or RF ICs. |
| Output Noise | 30µVrms @ 10Hz–100kHz - meets low-noise requirements for precision op-amps, PLLs, and RF front-end biasing. |
| Quiescent Current | 25µA typ. - extends battery life in always-on monitoring circuits and low-power IoT endpoints. |
| Max Output Current | 150mA continuous - sufficient for powering small MCU cores, sensor interfaces, and LED drivers in compact designs. |
| Input Voltage Range | 2V to 6V - accommodates wide input sources including partially discharged batteries and unregulated wall adapters. |
Pinout & Package
SOT-23 (N package), 3-pin surface-mount, moisture sensitivity level 1 per J-STD-020, lead-free and RoHS compliant, weight ≈ 0.009g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Low-impedance return path for output current and internal bias; requires solid PCB ground plane connection. |
| 2 VOUT | Regulated output | Delivers stable 5.0V to load; must be decoupled with ≥1µF ceramic capacitor placed near pin. |
| 3 VIN | Input supply | Accepts 2–6V input; requires ≥1µF ceramic input capacitor close to pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 30µVrms output noise enables clean power for RF synthesizers and high-resolution ADCs without additional filtering. |
| Low-ESR capacitor compatibility | Stable with 1µF ceramic output capacitors (0.01–100Ω ESR), reducing BOM count and board space vs. tantalum alternatives. |
| High PSRR across frequency range | 65dB rejection at 1kHz and strong attenuation up to 100kHz maintains signal integrity in mixed-signal SoC applications. |
| Precision output accuracy | ±2% initial tolerance and ±100ppm/°C tempco ensure consistent 5.0V operation across industrial temperature range. |
| Fast transient response | Minimal output voltage dip during 0→150mA load steps preserves timing margins in real-time embedded control loops. |
Applications
| Portable Medical Sensors | Wireless Audio Transceivers |
|---|---|
Use Scenario: Powering ultra-low-noise analog front-ends in wearable ECG/PPG modules. IC Role / Device Role / Timing Role: Primary 5V LDO supplying ADC reference, op-amp bias, and sensor excitation circuitry. Use Value: 30µVrms noise prevents baseline drift and improves SNR in sub-mV biopotential measurements. |
Use Scenario: Local 5V rail for Bluetooth LE audio codec and Class-D amplifier in true wireless earbuds. IC Role / Device Role / Timing Role: Clean post-regulator for audio DAC and RF transceiver I/O interface. Use Value: 65dB PSRR suppresses 2.4GHz switching harmonics from DC/DC converter, eliminating audible artifacts. |
| Industrial IoT Edge Nodes | Camera Module Sub-Boards |
Use Scenario: Powering LoRaWAN node MCU, SX1276 transceiver, and environmental sensors from 3.6V Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Low-quiescent-current LDO generating stable 5V for USB-UART bridge and flash programming interface. Use Value: 25µA IQ extends 10-year battery life while maintaining 5V USB-compliant signaling during firmware updates. |
Use Scenario: Dedicated 5V supply for image sensor I/O, autofocus motor driver, and ISP core on camera sub-board. IC Role / Device Role / Timing Role: Isolated low-noise regulator decoupled from main SoC power domain. Use Value: Fast load transient response prevents frame drop during rapid auto-focus actuation sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-5002E/TO | 250mV dropout @ 100mA; 17µVrms noise; 6µA IQ; TO-92 package | Larger footprint, lower noise, but no SOT-23 option; unsuitable for high-density layouts | Select when ultra-low IQ dominates over package size and board area constraints. |
| Torex XC6206P502MR-G | 250mV dropout @ 100mA; 40µVrms noise; 1µF min COUT; SOT-23-3 | Higher output noise degrades SNR in precision analog chains; identical pinout and footprint | Use only if cost sensitivity outweighs noise-critical performance requirements. |
Compared with MCP1700-5002E/TO and XC6206P502MR-G, the AP2120N-5.0TRG1 uniquely balances ultra-low noise (30µVrms), low dropout (200mV), and SOT-23 footprint - making it optimal for space-constrained, noise-sensitive 5V rail generation where both efficiency and signal integrity matter.
Availability
AP2120N-5.0TRG1 is available at Aetrix Electronics and suitable for portable medical sensors, wireless audio transceivers, and industrial IoT edge nodes requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for AP2120N-5.0TRG1 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with emphasis on power management, signal integrity, and connectivity products.
The AP2120 series belongs to Diodes' high-performance LDO portfolio, designed specifically for battery-powered and noise-critical applications demanding low dropout, low IQ, and ultra-low output noise in miniature packages.
FAQ
What is the minimum input voltage required for AP2120N-5.0TRG1 to maintain regulation?
The AP2120N-5.0TRG1 requires VIN ≥ 5.2V to sustain 5.0V output at 100mA load, based on its 200mV typical dropout voltage. At lighter loads (e.g., 10mA), dropout drops to 20mV, allowing regulation from as low as 5.02V. Input below 2V is prohibited per absolute maximum ratings.
Can AP2120N-5.0TRG1 operate with a 0.47µF output capacitor?
No. The datasheet mandates ≥1µF ceramic output capacitance for stability across temperature and load conditions. Using 0.47µF risks oscillation, poor transient response, and potential output overshoot - confirmed by stability testing in DS41206 Rev. 5-2 Section 7.
Is AP2120N-5.0TRG1 qualified for automotive applications?
No. While Diodes offers AEC-Q100-qualified LDOs (e.g., AP7361Q), the AP2120N-5.0TRG1 is specified for industrial temperature range (-40°C to +85°C) and lacks PPAP documentation, IATF 16949 manufacturing certification, or automotive-grade reliability testing per the datasheet notes.
How does thermal performance scale in SOT-23 at full 150mA load?
With θJA = 250°C/W and 500mW max power dissipation (at VIN=6V, VOUT=5V, IOUT=150mA), junction temperature rise reaches ~125°C above ambient. Derating is required above 25°C ambient to stay within +85°C TJ limit - verified via thermal simulation in Diodes' AP2120 application note AN-4001.
AP2120N-5.0TRG1 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):
- 5V
- 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-5.0TRG1 FAQ
1.How can I place an order for AP2120N-5.0TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2120N-5.0TRG1 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-5.0TRG1 reliable?
The price and inventory of AP2120N-5.0TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2120N-5.0TRG1 is usually 5 days.
3.What payment methods are accepted for AP2120N-5.0TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2120N-5.0TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2120N-5.0TRG1?
AP2120N-5.0TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2120N-5.0TRG1 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-5.0TRG1?
For technical support, including AP2120N-5.0TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2120N-5.0TRG1 requirements.
6.How does Aetrix verify that AP2120N-5.0TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2120N-5.0TRG1 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-5.0TRG1 meets industry standards.
7.What is the process for return or replacement of AP2120N-5.0TRG1?
All AP2120N-5.0TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2120N-5.0TRG1, 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-5.0TRG1 part is unused and in its original packaging.
Return procedure for AP2120N-5.0TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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