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Diodes Incorporated AP2210K-2.5TRE1
- Part No.:
- AP2210K-2.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2210K-2.5TRE1.pdf
- Description:
- IC REG LINEAR 2.5V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,118
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Product details
Overview
AP2210K-2.5TRE1 from Diodes Incorporated is a 300mA ultra-low dropout (ULDO) linear regulator with fixed 2.5V output, 250mV typical dropout at full load, ±1% output voltage accuracy, and 75dB PSRR at 100Hz-designed for noise-sensitive RF power rails in handheld wireless devices.
For engineers reviewing the AP2210K-2.5TRE1 datasheet, AP2210K-2.5TRE1 pinout, AP2210K-2.5TRE1 application, or AP2210K-2.5TRE1 equivalent, key selection criteria include low-noise operation (260nV/√Hz), logic-compatible enable control, reverse current protection, thermal shutdown, and SOT-23-5 package compatibility with bypass capacitor support.
Technical Context
The AP2210K-2.5TRE1 employs a bandgap-referenced error amplifier driving a PMOS pass transistor to achieve ultra-low dropout and high PSRR. Its internal architecture integrates CMOS/TTL-compatible enable logic, thermal foldback, and current-limit circuitry that triggers at 450–900mA.
It operates across –40°C to +125°C junction temperature with input voltage range 2.5V–13.2V and supports stable regulation with 1.0µF input and 2.2µF output ceramic capacitors. The BYP/ADJ pin enables low-noise performance via 100pF bypass capacitor or adjustable output configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% over –40°C to +125°C - ensures stable core supply for RF ICs and baseband processors. |
| Dropout Voltage | 250mV typ. at 300mA - enables operation from single-cell Li-ion (3.0V min) or dual-cell NiMH with margin. |
| PSRR | 75dB at 100Hz - suppresses switching noise from adjacent DC-DC converters feeding sensitive analog/RF blocks. |
| Standby Current | ≤1µA max. in shutdown - extends battery life in always-on monitoring or sleep-mode states. |
| Output Noise | 260nV/√Hz - meets stringent spectral purity requirements for VCO biasing and LNA power domains. |
| Enable Threshold | VIH = 2.0V min., VIL = 0.4V max. - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Protection | Internally limited junction temperature (150°C) with automatic recovery - prevents latch-up during transient overload. |
Pinout & Package
SOT-23-5 surface-mount package with matte tin-plated leads, RoHS-compliant, moisture sensitivity level 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 2.5V–13.2V; requires 1.0µF ceramic decoupling close to pin for stability. |
| 2 (GND) | Ground reference | Low-impedance return path for regulator quiescent current and load current; connects to system ground plane. |
| 3 (EN) | Enable control input | CMOS/TTL-compatible; high ≥2.0V enables regulation, low ≤0.4V places device in 1µA shutdown mode. |
| 4 (BYP/ADJ) | Bypass or adjustment node | For fixed 2.5V version: connect 100pF capacitor to GND to minimize output noise; not used as ADJ. |
| 5 (VOUT) | Regulated output | Delivers up to 300mA at 2.5V ±1%; requires 2.2µF ceramic output capacitor for PSRR and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Dropout | 250mV at 300mA enables use with minimal input–output headroom, reducing power loss in battery-powered systems. |
| Reverse Current Protection | Prevents backflow from VOUT to VIN when input is removed or pulled low - critical for multi-rail sequencing and hot-swap safety. |
| High PSRR & Low Noise | 75dB @100Hz and 260nV/√Hz output noise ensure clean power delivery to RF synthesizers and ADC reference circuits. |
| Integrated Protections | Overcurrent limit (450–900mA), thermal shutdown, and short-circuit foldback eliminate need for external fault management circuitry. |
| Logic-Compatible Enable | Direct interface with microcontroller GPIO pins operating at 1.8V or 3.3V logic levels - no external pull-ups or translators required. |
Applications
| Cellular Handset RF Front-End | Wireless Headset Audio Codec Supply |
|---|---|
|
Use Scenario: Powers RF power amplifier bias and VCO tuning voltage in GSM/WCDMA/LTE handsets where supply ripple directly impacts EVM and ACLR. IC Role / Device Role / Timing Role: ULDO regulator providing ultra-clean 2.5V rail isolated from noisy main PMIC outputs. Use Value: 75dB PSRR and 260nV/√Hz noise prevent AM-to-PM conversion and phase noise degradation in transmit chain. |
Use Scenario: Supplies analog section of Bluetooth audio codec in compact wireless headsets with tight thermal and space constraints. IC Role / Device Role / Timing Role: Low-quiescent, low-dropout regulator delivering stable 2.5V to DAC/ADC reference and op-amp stages. Use Value: 1µA shutdown current extends talk time; 250mV dropout allows operation down to 2.75V battery voltage. |
| PDA Baseband Processor Core | IoT Sensor Node RF Transceiver |
|
Use Scenario: Provides regulated 2.5V supply to ARM9/ARM11 core voltage domain in legacy PDAs requiring precise voltage tolerance. IC Role / Device Role / Timing Role: Precision linear regulator maintaining ±1% output accuracy across –40°C to +85°C ambient. Use Value: Tight line/load regulation (≤6mV) and 48ppm/°C tempco ensure consistent processor timing and memory interface stability. |
Use Scenario: Powers sub-GHz or 2.4GHz transceiver IC (e.g., CC1101, nRF24L01+) in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Enable-controlled ULDO enabling duty-cycled operation synchronized with MCU wake-up events. Use Value: Logic-level EN pin allows direct MCU control; 250mV dropout maximizes usable battery energy before brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 250mA output, 175mV dropout at 250mA, 65dB PSRR at 100Hz, no reverse current protection | Limited to lower current and reduced noise rejection; suitable only for non-RF digital loads | Select if cost sensitivity outweighs RF noise performance and reverse blocking requirement |
| Torex XC6206P252MR-G | 300mA output, 200mV dropout at 100mA, 60dB PSRR at 1kHz, no enable pin or thermal shutdown | Lacks active enable control and overtemperature protection - requires external supervision | Choose only for simple always-on applications where board space is more critical than functional safety |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, the AP2210K-2.5TRE1 delivers superior RF-grade noise suppression, integrated reverse-current blocking, and robust fault coverage-making it the only choice for battery-powered RF signal chains requiring guaranteed stability and low EMI impact.
Availability
AP2210K-2.5TRE1 is available at Aetrix Electronics and suitable for cellular handset design, wireless headset development, PDA baseband power management, and IoT sensor node deployment requiring stable component supply and long-term manufacturability.
Supply support for AP2210K-2.5TRE1 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 for power management, signal integrity, and connectivity applications.
The AP2210 series belongs to Diodes' high-performance ULDO regulator product line, engineered specifically for RF and portable electronics where low noise, ultra-low dropout, and robust protection are mandatory.
FAQ
What is the minimum input voltage required for AP2210K-2.5TRE1 to maintain regulation?
The minimum input voltage is 2.75V: 2.5V output plus 250mV typical dropout. However, Diodes recommends VIN ≥ VOUT + 1V (i.e., ≥3.5V) to ensure full PSRR performance and avoid degradation under load transients or temperature extremes.
Can the BYP/ADJ pin be left floating in the AP2210K-2.5TRE1 fixed-output version?
No. For the fixed 2.5V version, the BYP/ADJ pin must be connected to a 100pF capacitor to GND to achieve specified 260nV/√Hz output noise and optimal PSRR. Leaving it floating degrades noise performance and may cause instability.
Does AP2210K-2.5TRE1 require an external diode for reverse-input protection?
No. The device integrates reverse current protection, eliminating the need for an external series diode. This reduces forward voltage drop, power loss, and PCB area-critical in space-constrained portable designs.
How does thermal shutdown behave during sustained overload conditions?
When junction temperature exceeds 150°C, the AP2210K-2.5TRE1 disables the pass transistor and enters thermal shutdown. It automatically recovers once TJ falls below ~140°C hysteresis threshold, enabling self-resetting fault recovery without external intervention.
AP2210K-2.5TRE1 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 15 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
AP2210K-2.5TRE1 FAQ
1.How can I place an order for AP2210K-2.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2210K-2.5TRE1 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 AP2210K-2.5TRE1 reliable?
The price and inventory of AP2210K-2.5TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2210K-2.5TRE1 is usually 5 days.
3.What payment methods are accepted for AP2210K-2.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2210K-2.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2210K-2.5TRE1?
AP2210K-2.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2210K-2.5TRE1 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 AP2210K-2.5TRE1?
For technical support, including AP2210K-2.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2210K-2.5TRE1 requirements.
6.How does Aetrix verify that AP2210K-2.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AP2210K-2.5TRE1 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 AP2210K-2.5TRE1 meets industry standards.
7.What is the process for return or replacement of AP2210K-2.5TRE1?
All AP2210K-2.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2210K-2.5TRE1, 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 AP2210K-2.5TRE1 part is unused and in its original packaging.
Return procedure for AP2210K-2.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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