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Diodes Incorporated AP2138N-2.2TRG1
- Part No.:
- AP2138N-2.2TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP2138N-2.2TRG1.pdf
- Description:
- IC REG LINEAR 250MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
AP2138N-2.2TRG1 from Diodes Incorporated is a fixed-output 2.2V CMOS low-dropout (LDO) regulator in SOT-23-3 package, delivering up to 250mA output current with ±2% output voltage accuracy, 1.0µA typical quiescent current, and 25mV typical dropout at 10mA load. It operates from 2.5V to 6.0V input and targets battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the AP2138N-2.2TRG1 datasheet, AP2138N-2.2TRG1 pinout, AP2138N-2.2TRG1 application, or AP2138N-2.2TRG1 equivalent, key selection criteria include its 2.2V fixed output, SOT-23-3 footprint, 250mA current capability, ±100ppm/°C temperature coefficient, and absence of enable control-distinguishing it from the AP2139 series.
Technical Context
The AP2138N-2.2TRG1 integrates a precision voltage reference, error amplifier, feedback resistor network, and current-limit protection circuit in a single CMOS die. Its architecture delivers stable regulation without external feedback components due to factory-trimmed internal resistors setting the 2.2V output.
It lacks an enable pin or quick-discharge function-confirmed by pin assignment diagrams showing only VIN, VOUT, and GND terminals in SOT-23-3. Thermal performance is defined by θJA = 250°C/W and θJC = 81.9°C/W, supporting operation from –40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.2V ±2% (±44mV tolerance; ensures stable supply for 2.2V logic or analog rails) |
| Quiescent Current | 1.0µA typical (enables >1-year battery life in always-on sensor nodes powered by coin cells) |
| Max Output Current | 250mA (supports moderate-power peripherals like Bluetooth LE modules or small displays) |
| Dropout Voltage | 25mV typical at 10mA (allows regulation from 2.225V input; critical for single-cell Li-ion or NiMH systems) |
| Load Regulation | 25mV typical (0–100mA load step; maintains tight voltage control across dynamic current demands) |
| Line Regulation | 6mV typical (2.2V ≤ VIN ≤ 6.0V; rejects input ripple and battery sag effectively) |
| Temp Coefficient | ±100ppm/°C (±220µV/°C drift; preserves ADC reference stability over industrial temperature range) |
Pinout & Package
SOT-23-3 package: 3-pin surface-mount plastic package with standard lead pitch (0.95mm), exposed pad not present, JEDEC MO-178 compliant, thermal resistance θJA = 250°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Input voltage supply (2.5V–6.0V); requires ≥1µF ceramic input capacitor for stability |
| 2 | VOUT | Regulated 2.2V output; requires ≥1µF ceramic output capacitor with ESR 0.01Ω–100Ω |
| 3 | GND | Power ground reference; must be low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 1.0µA typical enables multi-year operation on CR2032 batteries in IoT endpoints |
| High accuracy | ±2% output tolerance eliminates need for post-regulation trimming in cost-sensitive designs |
| Low dropout | 25mV @10mA allows use with depleting single-cell alkaline or LiFePO₄ sources |
| Thermal protection | Internal junction temperature limit prevents damage during sustained 250mA loads in confined PCB areas |
| RoHS/Green | Fully lead-free, halogen- and antimony-free per Diodes Inc. definitions (Br/Cl <900ppm, Sb <1000ppm) |
Applications
| Wearable Health Sensors | Smart Remote Controls |
|---|---|
Use Scenario: Continuous ECG/PPG monitoring using coin-cell-powered wearable patch. IC Role / Device Role / Timing Role: Primary 2.2V LDO supplying analog front-end and BLE SoC core voltage. Use Value: 1.0µA quiescent current extends CR2032 battery life beyond 18 months at 1Hz sampling. |
Use Scenario: IR remote with motion wake-up and RF transmission. IC Role / Device Role / Timing Role: Fixed 2.2V regulator for microcontroller and IR LED driver logic. Use Value: Low dropout enables reliable operation down to 2.25V input as alkaline cells discharge. |
| Industrial Wireless Transmitters | Portable Diagnostic Tools |
Use Scenario: Battery-operated LoRaWAN node in factory floor monitoring. IC Role / Device Role / Timing Role: Powering 32-bit MCU, LoRa transceiver, and temperature/humidity sensor. Use Value: ±2% output accuracy ensures consistent ADC reference across temperature (-40°C to +85°C). |
Use Scenario: Handheld medical device with OLED display and touch interface. IC Role / Device Role / Timing Role: Main 2.2V rail for display driver IC and capacitive touch controller. Use Value: 250mA output supports brief peak currents during display refresh without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7354-22SAG-7 | Successor device: 2.2V output, 300mA rating, 0.6µA IQ, SOT-23-3, AEC-Q100 qualified | Supports automotive-grade reliability and higher current; requires no design change for footprint | Select for new designs requiring extended lifecycle support or IATF 16949-compliant supply chain |
| MCP1700T-2202E/TT | Microchip part: 2.2V, 250mA, 1.6µA IQ, SOT-23-3, ±2% accuracy, but higher dropout (115mV @100mA) | Lacks Diodes' ultra-low 25mV dropout at light loads; suitable where input headroom exceeds 150mV | Choose when cross-supplier second sourcing is required and 25mV dropout advantage is non-critical |
Compared with AP2138N-2.2TRG1, AP7354-22SAG-7 improves quiescent current and adds automotive qualification, while MCP1700T-2202E/TT trades off dropout performance for broader supplier availability-making AP2138N-2.2TRG1 optimal where minimal input-to-output voltage difference is essential at microamp-level IQ.
Availability
AP2138N-2.2TRG1 is available at Aetrix Electronics and suitable for battery-powered equipment, portable AV systems, mobile phones, and communication tools requiring stable component supply and long-term obsolescence management.
Supply support for AP2138N-2.2TRG1 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 devices, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
The AP2138 series belongs to Diodes' ultra-low-IQ LDO product line, engineered specifically for energy-constrained portable and wireless applications where battery longevity and minimal voltage overhead are primary design constraints.
FAQ
What is the maximum input voltage for AP2138N-2.2TRG1?
The absolute maximum input voltage is 6.6V, but the recommended operating range is 2.5V to 6.0V. Exceeding 6.0V continuously risks accelerated parametric shift and reduced reliability, especially at high ambient temperatures. Operation above 6.0V should be limited to transient conditions only, per DS37428 Rev. 6–3 Section 4.
Does AP2138N-2.2TRG1 include an enable pin?
No. AP2138N-2.2TRG1 has no enable functionality-it is always active when VIN is within specification. The AP2139 series provides CE control and quick discharge; this part is the non-enable variant in SOT-23-3 package, confirmed by pinout diagrams and electrical characteristics tables listing only VIN, VOUT, and GND.
What output capacitor is required for stability?
A minimum 1µF ceramic capacitor with ESR between 0.01Ω and 100Ω is required at VOUT. X5R or X7R dielectrics are recommended. Lower ESR values improve transient response but may risk instability if below 0.01Ω; tantalum or aluminum electrolytics are not recommended due to ESR and aging effects.
Is AP2138N-2.2TRG1 suitable for automotive applications?
No. AP2138N-2.2TRG1 is not AEC-Q100 qualified and is not manufactured in an IATF 16949-certified facility per Diodes' documentation. For automotive use, Diodes recommends AP7354-22SAG-7, which is AEC-Q100 Grade 1 qualified and PPAP-capable, as stated in the "For automotive applications" note on page 1 of DS37428.
AP2138N-2.2TRG1 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):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 1.5 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP2138N-2.2TRG1 FAQ
1.How can I place an order for AP2138N-2.2TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2138N-2.2TRG1 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 AP2138N-2.2TRG1 reliable?
The price and inventory of AP2138N-2.2TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2138N-2.2TRG1 is usually 5 days.
3.What payment methods are accepted for AP2138N-2.2TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2138N-2.2TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2138N-2.2TRG1?
AP2138N-2.2TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2138N-2.2TRG1 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 AP2138N-2.2TRG1?
For technical support, including AP2138N-2.2TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2138N-2.2TRG1 requirements.
6.How does Aetrix verify that AP2138N-2.2TRG1 is sourced from the original manufacturer or authorized distributors?
All AP2138N-2.2TRG1 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 AP2138N-2.2TRG1 meets industry standards.
7.What is the process for return or replacement of AP2138N-2.2TRG1?
All AP2138N-2.2TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2138N-2.2TRG1, 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 AP2138N-2.2TRG1 part is unused and in its original packaging.
Return procedure for AP2138N-2.2TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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