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Diodes Incorporated AP2205-33W5-7
- Part No.:
- AP2205-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2205-33W5-7.pdf
- Description:
- IC REG LINEAR 3.3V 250MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
AP2205-33W5-7 from Diodes Incorporated is a fixed-output 3.3V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained, battery-powered systems. It delivers up to 200mA output current with 100mV dropout at 100µA load, 60dB PSRR at 1kHz, ±2% output voltage accuracy, and ultra-low 36µA ground current at light load - enabling stable USB peripheral and portable device power rails.
For engineers reviewing the AP2205-33W5-7 datasheet, AP2205-33W5-7 pinout, AP2205-33W5-7 application, or AP2205-33W5-7 equivalent, key selection criteria include its 2.3V–24V wide input range, thermal/overcurrent protection, enable-controlled shutdown, compatibility with low-ESR ceramic capacitors, and SOT25 package footprint for compact PCB layouts.
Technical Context
The AP2205-33W5-7 integrates a precision 1.24V bandgap reference, error amplifier, current-limit circuit, thermal shutdown, reverse-current protection, and logic-level enable input. Its internal architecture supports stable regulation across –40°C to +125°C junction temperature with <±100ppm/°C output voltage drift.
It operates in low-power shutdown mode drawing only 0.01µA standby current and features adjustable startup timing via external RC on the EN pin. The fixed 3.3V output eliminates external feedback resistors while maintaining ±0.5% load regulation (1mA–200mA) and ±0.05% line regulation (VIN = VOUT+1V to 24V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures compatible logic-level supply for 3.3V microcontrollers and I/O without external resistor network. |
| Input Voltage Range | 2.3V to 24V - supports direct connection to single-cell Li-ion (2.7–4.2V), multi-cell batteries, or industrial 12V/24V rails. |
| Dropout Voltage | 100mV @ 100µA load - enables regulation down to VIN = 3.4V, critical for extending battery runtime in low-VIN conditions. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from upstream DC-DC converters, preserving signal integrity in ADCs and RF sections. |
| Ground Current | 36µA @ 100µA load - minimizes quiescent power loss, essential for always-on sensor nodes and backup power domains. |
| Enable Threshold | VEN(HI) ≥ 2.0V, VEN(LO) ≤ 0.4V - compatible with 1.8V/3.3V GPIOs for precise system-level power sequencing control. |
| Thermal Protection | Integrated OTP with automatic recovery - prevents permanent damage during sustained overload or poor heatsinking in SOT25 package. |
Pinout & Package
SOT25 (SC-74A) surface-mount package: 5-pin, 2.8mm × 2.9mm footprint, 1.05mm height, lead-free matte tin plating, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input voltage supply | Accepts 2.3V–24V unregulated input; requires 1.0µF ceramic bypass capacitor placed near pin. |
| 2 - GND | Power ground reference | Primary return path for load current and internal bias; must connect to low-impedance PCB ground plane. |
| 3 - EN | Logic-enable control input | Active-high enable; drives regulator into 0.01µA shutdown when pulled ≤0.4V; supports GPIO-driven power gating. |
| 4 - ADJ/NC | Adjust pin / Not connected | No connection required for fixed-output version; left floating or tied to GND per layout best practice. |
| 5 - VOUT | Regulated 3.3V output | Delivers up to 200mA; requires 2.2µF ceramic output capacitor with ESR < 100mΩ for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (2.3V–24V) | Eliminates need for pre-regulation stages in mixed-voltage systems, reducing BOM count and board area. |
| Ultra-low 36µA ground current @ 100µA load | Extends battery life in IoT sensors and wearables by minimizing idle power consumption. |
| 60dB PSRR @ 1kHz | Enables clean analog/RF power domains without additional LC filtering, lowering component cost and EMI risk. |
| Integrated reverse-current protection | Prevents backfeed from VOUT to VIN during input brownout or hot-swap events, protecting upstream sources. |
| Thermal shutdown with auto-recovery | Allows safe operation under transient overloads without latch-up, simplifying thermal design in sealed enclosures. |
| Low-ESR ceramic capacitor compatible | Supports compact, high-reliability designs using X5R/X7R MLCCs instead of bulkier tantalum or aluminum electrolytics. |
Applications
| USB Peripheral Power | Industrial Sensor Node |
|---|---|
|
Use Scenario: Powering USB HID devices (keyboards, mice) from variable 5V bus or battery-backed 3.3V rail. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying MCU, USB transceiver, and EEPROM with tight voltage tolerance. Use Value: Maintains regulation down to 3.4V input, ensuring uninterrupted operation during USB port voltage sag or battery discharge. |
Use Scenario: Remote environmental monitoring node powered by coin cell or energy harvester. IC Role / Device Role / Timing Role: Always-on 3.3V supply for ultra-low-power MCU, temperature/humidity sensor, and BLE radio. Use Value: 36µA ground current extends 10-year battery life; EN pin enables deep-sleep wake-up control. |
| Laptop Subsystem Rail | Automotive Infotainment Accessory |
|
Use Scenario: Dedicated 3.3V rail for SSD controller, touchpad ASIC, or camera interface in notebook designs. IC Role / Device Role / Timing Role: Secondary regulated supply decoupled from main CPU VRM, improving noise isolation. Use Value: 60dB PSRR rejects noise from high-frequency CPU switching, preventing data corruption in high-speed interfaces. |
Use Scenario: Powering OBD-II dongles, dashcam modules, or Bluetooth adapters connected to vehicle 12V system. IC Role / Device Role / Timing Role: Input-tolerant LDO handling load-dump transients and cold-crank dips (down to 2.3V). Use Value: Wide 2.3V–24V input range sustains operation during engine cranking (≤6V) and alternator surges (≤24V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | 3.3V fixed, 250mA max, 600mV dropout @ 250mA, higher quiescent current (2.5µA typical) | Larger dropout limits use below 3.9V input; better suited for higher-current, less space-constrained designs | Select when >200mA output or tighter thermal margin is required; avoid for sub-3.5V battery operation. |
| Torex XC6210B332MR-G | 3.3V fixed, 150mA max, 120mV dropout @ 100µA, 1.0µA quiescent current, SOT23-5 package | Lower current rating and smaller package reduce thermal mass; lacks EN pin and reverse-current protection | Choose for ultra-low-IQ battery-only apps where enable control and fault protection are secondary priorities. |
Compared with MCP1703T-3302E/MB and XC6210B332MR-G, the AP2205-33W5-7 uniquely balances 200mA capability, 100mV dropout, 36µA IQ, integrated EN and reverse-current protection, and SOT25 footprint - making it optimal for compact, battery-sensitive USB and portable systems requiring robust fault coverage.
Availability
AP2205-33W5-7 is available at Aetrix Electronics and suitable for USB peripheral power, industrial sensor nodes, laptop subsystem rails, and automotive infotainment accessories requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP2205-33W5-7 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 for power management, signal integrity, and connectivity applications.
The AP2205 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial systems demanding low dropout, low noise, and comprehensive protection features.
FAQ
What is the minimum input voltage required for regulation at 3.3V output?
The AP2205-33W5-7 maintains regulation down to VIN = VOUT + VDROP = 3.3V + 0.1V = 3.4V under light load (100µA). At 200mA load, dropout rises to 460mV, requiring VIN ≥ 3.76V. The absolute minimum VIN is 2.3V, but regulation is not guaranteed below 3.4V.
Can the AP2205-33W5-7 be used with ceramic output capacitors?
Yes - the AP2205-33W5-7 is explicitly designed for low-ESR ceramic capacitors. A 2.2µF X5R/X7R MLCC with ESR < 100mΩ is recommended for stability. Tantalum or aluminum electrolytic capacitors are unnecessary and may degrade phase margin.
Does the EN pin require a pull-up resistor?
No external pull-up is required. The EN pin has an internal weak pull-down; applying ≥2.0V (e.g., from a GPIO) enables the regulator. Leaving EN open disables the device, drawing only 0.01µA standby current - ideal for simple on/off control without extra components.
Is the AP2205-33W5-7 qualified for automotive applications?
The standard AP2205-33W5-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP2205-33W5-7Q) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening. Contact Diodes or Aetrix for qualified part numbers and qualification reports.
AP2205-33W5-7 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):
- 3.3V
- 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
AP2205-33W5-7 FAQ
1.How can I place an order for AP2205-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2205-33W5-7 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 AP2205-33W5-7 reliable?
The price and inventory of AP2205-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2205-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP2205-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2205-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2205-33W5-7?
AP2205-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2205-33W5-7 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 AP2205-33W5-7?
For technical support, including AP2205-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2205-33W5-7 requirements.
6.How does Aetrix verify that AP2205-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP2205-33W5-7 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 AP2205-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP2205-33W5-7?
All AP2205-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2205-33W5-7, 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 AP2205-33W5-7 part is unused and in its original packaging.
Return procedure for AP2205-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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