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Diodes Incorporated AP2205-25W5-7
- Part No.:
- AP2205-25W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2205-25W5-7.pdf
- Description:
- IC REG LINEAR 2.5V 250MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP2205-25W5-7 from Diodes Incorporated is a fixed-output 2.5V ultra-low dropout (ULDO) linear regulator in SOT25 package, delivering up to 200mA output current with 100mV dropout at 100µA load. It features 2.3V–24V wide input range, ±2% output voltage accuracy, 60dB PSRR at 1kHz, and integrated thermal shutdown, overcurrent, and reverse-current protection-designed for USB-powered portable electronics requiring stable low-noise bias.
For engineers reviewing the AP2205-25W5-7 datasheet, AP2205-25W5-7 pinout, AP2205-25W5-7 application, or AP2205-25W5-7 equivalent, key selection criteria include dropout performance at light loads, ground current vs. output current behavior, EN pin logic thresholds, compatibility with ceramic output capacitors, and thermal resistance in SOT25 layout.
Technical Context
The AP2205-25W5-7 implements an EPNP-based high-voltage LDO architecture with internal 1.24V reference, error amplifier, and resistor network preset for 2.5V output. Its enable circuit supports active-high logic with 2.0V VIH and 0.4V VIL thresholds, and shutdown mode draws only 0.01µA typical standby current.
Thermal protection activates at +150°C junction temperature, and overcurrent limiting engages at ≥250mA peak output. The device operates across –40°C to +125°C junction temperature and supports low-ESR ceramic capacitors (1.0µF input, 2.2µF output) without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - ensures stable rail for 2.5V logic, ADC references, or sensor bias without external resistors. |
| Input Voltage Range | 2.3V to 24V - supports single-cell Li-ion, multi-cell alkaline, and industrial 12V/24V supplies without pre-regulation. |
| Max Output Current | 200mA @ VOUT > 1.8V - sufficient for microcontroller cores, RF modules, or small displays in space-constrained designs. |
| Dropout Voltage | 100mV @ IOUT = 100µA - enables regulation down to VIN = 2.6V, critical for battery end-of-life operation. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Ground Current | 36µA @ IOUT = 100µA - minimizes quiescent power loss in always-on subsystems like real-time clocks or wake-up circuits. |
| Enable Threshold | VIN ≥ 2.0V for EN high, ≤ 0.4V for EN low - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT25 (SC-74A) package: 5-pin surface-mount, 1.6mm × 2.8mm footprint, 1.1mm height, lead-free matte tin plating, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 2.3–24V; requires 1.0µF ceramic capacitor close to pin for stability and transient response. |
| 2 (GND) | Power ground reference | Common return path for input/output currents; must be connected to low-impedance PCB ground plane. |
| 3 (EN) | Active-high enable control | Pulls high to enable regulation; drives low (<0.4V) to enter 1µA shutdown mode for battery preservation. |
| 4 (ADJ/NC) | Adjust pin / Not connected | No connection required for fixed 2.5V version; leave floating or tie to GND per layout best practice. |
| 5 (VOUT) | Regulated output terminal | Delivers 2.5V ±2%; requires 2.2µF low-ESR ceramic capacitor directly at pin for ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 36µA at 100µA load - extends battery runtime in IoT sensors and wearables operating intermittently. |
| Reverse current protection | Prevents backflow from VOUT to VIN when input is removed - eliminates need for external blocking diode in backup power paths. |
| Low-noise output | 30µVRMS (10Hz–100kHz) - suitable for noise-sensitive analog circuits like precision ADCs or audio codecs. |
| Thermal shutdown | Activates at +150°C junction temperature with automatic recovery - protects against sustained overload or poor heatsinking in sealed enclosures. |
| Ceramic capacitor compatible | Stable with 2.2µF X5R/X7R MLCC on output - reduces board area and cost versus tantalum or electrolytic alternatives. |
Applications
| USB-Powered Portable Instruments | Laptop Subsystem Bias |
|---|---|
Use Scenario: Handheld multimeter powered via USB-C port with variable input (4.5–5.5V) and 2.5V ADC reference requirement. IC Role / Device Role / Timing Role: Provides clean, accurate 2.5V reference rail decoupled from noisy USB bus voltage. Use Value: Enables 16-bit ADC linearity by maintaining <±2mV output deviation across temperature and load, eliminating post-calibration drift. | Use Scenario: Always-on sensor hub in clamshell laptop lid, powered from main 3.3V rail during sleep mode. IC Role / Device Role / Timing Role: Supplies 2.5V to Hall-effect lid-open detector and accelerometer with EN controlled by EC firmware. Use Value: Achieves <1µA system sleep current via EN-driven shutdown, extending suspend duration beyond 7 days on battery. |
| Industrial Sensor Node | Automotive Body Control Module |
Use Scenario: Wireless temperature node using LoRaWAN, powered by 3.6V Li-SOCl₂ battery with 10-year shelf life. IC Role / Device Role / Timing Role: Regulates 2.5V for ultra-low-power MCU and digital temperature sensor during periodic wake-up bursts. Use Value: Maintains regulation down to 2.6V input (100mV dropout), extracting final 15% capacity from aging battery without brownout resets. | Use Scenario: Interior lighting controller receiving 12V vehicle supply with load-dump transients up to 36V. IC Role / Device Role / Timing Role: Generates 2.5V bias for CAN transceiver logic and LED driver IC under harsh automotive conditions. Use Value: Survives 36V absolute max input rating and thermal shutdown during short-circuit faults, meeting ISO 7637-2 pulse 5a requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2502E/MB | 250mA max output, 200mV dropout @ 250mA, 1.8µA quiescent current | Higher IQ but lower dropout at full load; no reverse current protection | Preferred where full 250mA load is common and reverse leakage must be externally managed. |
| Torex XC6219B252MR-G | 200mA max, 160mV dropout @ 100mA, 1.0µA IQ, no EN pin | Fixed ON/OFF control only; lacks enable functionality for dynamic power gating | Select when enable control is unnecessary and lowest possible quiescent current is critical. |
Compared with MCP1703T-2502E/MB and XC6219B252MR-G, the AP2205-25W5-7 uniquely combines reverse-current blocking, active-high EN with sub-1µA shutdown, and 100mV dropout at µA loads-making it optimal for battery-gated systems requiring both ultra-low IQ and robust fault protection.
Availability
AP2205-25W5-7 is available at Aetrix Electronics and suitable for USB-powered instrumentation, industrial sensor nodes, laptop subsystem bias, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP2205-25W5-7 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 design centers across Asia, Europe, and the US, serving industrial, computing, consumer, and automotive markets.
The AP2205 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for portable and battery-critical applications demanding wide VIN range, ultra-low IQ, and integrated protection features in compact packages.
FAQ
What is the minimum input voltage required for regulation at 2.5V output?
The AP2205-25W5-7 maintains regulation down to VIN = VOUT + VDROP = 2.5V + 0.1V = 2.6V at 100µA load. At higher loads, dropout increases-e.g., 320mV at 100mA-so minimum functional VIN rises to 2.82V. Below 2.3V input, the device ceases regulation entirely per Absolute Maximum Ratings.
Can the AP2205-25W5-7 be used with a 10µF ceramic output capacitor?
Yes-datasheet specifies stability with low-ESR ceramic capacitors from 2.2µF to 100µF. A 10µF X5R 0805 MLCC improves load-transient response and further reduces output ripple compared to the 2.2µF minimum, with no risk of oscillation due to the internal compensation.
Does the EN pin require a pull-up resistor for reliable startup?
No external pull-up is required. The EN pin has an internal weak pull-down (typical 10MΩ), so connecting EN directly to VIN ensures immediate enable at power-on. For controlled sequencing, drive EN from a GPIO; floating EN results in guaranteed disable due to the internal pull-down.
Is the AP2205-25W5-7 qualified for automotive AEC-Q100 applications?
No-the AP2205-25W5-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP2205-25W5-7Q) with PPAP capability and IATF 16949 manufacturing, but this standard part is intended for industrial and commercial use only. Refer to Diodes' automotive product definitions page for qualified alternatives.
AP2205-25W5-7 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):
- 24V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP2205-25W5-7 FAQ
1.How can I place an order for AP2205-25W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2205-25W5-7 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 AP2205-25W5-7 reliable?
The price and inventory of AP2205-25W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2205-25W5-7 is usually 5 days.
3.What payment methods are accepted for AP2205-25W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2205-25W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2205-25W5-7?
AP2205-25W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2205-25W5-7 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 AP2205-25W5-7?
For technical support, including AP2205-25W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2205-25W5-7 requirements.
6.How does Aetrix verify that AP2205-25W5-7 is sourced from the original manufacturer or authorized distributors?
All AP2205-25W5-7 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 AP2205-25W5-7 meets industry standards.
7.What is the process for return or replacement of AP2205-25W5-7?
All AP2205-25W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2205-25W5-7, 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 AP2205-25W5-7 part is unused and in its original packaging.
Return procedure for AP2205-25W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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