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Diodes Incorporated AL17052V5W5-7
- Part No.:
- AL17052V5W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AL17052V5W5-7.pdf
- Description:
- IC REG BUCK 5V 50MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
AL17052V5W5-7 from Diodes Incorporated is a universal AC-input 700V integrated buck converter IC with embedded high-voltage MOSFET, delivering regulated 5V output at up to 50mA. It operates across 85–300VAC input, achieves 60% system efficiency at 50mA and 50% at 10mA light load, and consumes <10mW in standby-enabling always-on IoT power supplies without opto-couplers.
For engineers reviewing the AL17052V5W5-7 datasheet, AL17052V5W5-7 pinout, AL17052V5W5-7 application, or AL17052V5W5-7 equivalent, key selection criteria include its fixed 5V output, SOT25 package integration, 700V drain rating, ultra-low no-load power, and DCM-mode operation with auto-adjusting peak current (60–140mA) and switching frequency.
Technical Context
The AL17052V5W5-7 implements constant-voltage control via internal feedback derived from VCC capacitor voltage, eliminating external opto-coupler dependency. Its control logic dynamically modulates peak inductor current (140mA → 60mA) and switching frequency based on load, maintaining DCM operation across full and light loads.
Startup relies on an internal HV regulator charging VCC to 3.05V (typ), followed by UVLO hysteresis (150mV) and soft-start with three-stage minimum off-time ramping (4×/2×/1× tMINOFF). Protection includes OTP (+150°C), OCP (200mA threshold), OLP (8192-cycle counter), and leading-edge blanking (100ns).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–300VAC universal mains input - enables single-design global deployment without hardware revision. |
| Output Voltage | Fixed 5V ±3% - eliminates external feedback resistor network and simplifies BOM for low-power IoT applications. |
| Max Output Current | 50mA - supports wireless sensor nodes, BLE/WPAN modules, and microcontroller-based peripherals requiring stable 5V rail. |
| Drain Breakdown Voltage | 700V - integrates primary-side switching capability without external HV MOSFET, reducing PCB area and component count. |
| Standby Power | <10mW - meets Energy Star Level VI and EU CoC Tier 2 requirements for always-on connected devices. |
| Efficiency | 60% @ 50mA / 50% @ 10mA - optimized for discontinuous conduction mode (DCM) across load range, minimizing light-load losses. |
| Package | SOT25 - thermally enhanced 5-pin surface-mount package with exposed drain pad for direct thermal coupling to PCB copper. |
Pinout & Package
SOT25 package with exposed drain pad for thermal dissipation and mechanical stability. Pin 1 (VCC) supplies internal control circuitry; Pins 2–4 (SOURCE) form the common ground reference and MOSFET source connection; Pin 5 (DRAIN) connects to high-voltage input and inductor node.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Control supply input | Charged by internal HV regulator; powers internal logic and gate driver; voltage sampled for output regulation. |
| 2, 3, 4 - SOURCE | MOSFET source / GND reference | Common return path for internal power switch and control circuitry; must be low-impedance connection to PCB ground plane. |
| 5 - DRAIN | High-voltage MOSFET drain | Connects to rectified AC input and inductor; carries full primary-side switching current; tied to exposed pad for thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 700V MOSFET | Eliminates external HV switch, reduces BOM count by ≥3 components, and enables compact offline buck designs. |
| Auto-adjusting peak current (60–140mA) | Maintains DCM operation across load range, improving light-load efficiency and enabling predictable transient response. |
| Ultra-fast startup (<8ms) | Reduces wake-up latency for battery-backed or event-triggered IoT systems requiring rapid power restoration. |
| VCC-based output sensing | Derives feedback from VCC capacitor voltage-no opto-coupler, no secondary-side sensing components, no isolation barrier. |
| Comprehensive protection suite | OTP, OCP, OLP, UVLO, and LEB ensure robust operation under surge, overload, overtemperature, and startup fault conditions. |
Applications
| Smart Home Sensors | Industrial Wireless Nodes |
|---|---|
|
Use Scenario: Battery-free occupancy/motion sensors powered directly from AC mains in lighting fixtures or HVAC controls. IC Role / Device Role / Timing Role: Primary-side offline buck controller providing isolated 5V rail for MCU and sub-GHz RF transceiver. Use Value: Enables maintenance-free operation with <10mW standby draw and 60% efficiency at typical 20mA active load. |
Use Scenario: DIN-rail mounted condition monitoring nodes measuring temperature/vibration in factory automation equipment. IC Role / Device Role / Timing Role: Mains-powered 5V supply for ARM Cortex-M microcontroller and LoRaWAN modem operating in harsh industrial environments. Use Value: 700V drain rating withstands line surges; SOT25 package supports conformal coating; OTP ensures reliability at +105°C ambient. |
| White Goods Control Boards | Low-Power IoT Gateways |
|
Use Scenario: Standby power supply for microcontroller and touch interface on refrigerator or washing machine control panels. IC Role / Device Role / Timing Role: Always-on CV buck converter powering real-time clock, memory, and wake-up logic during appliance sleep mode. Use Value: Fixed 5V output eliminates calibration; <10mW consumption meets IEC 62301 Ed.2 standby energy limits. |
Use Scenario: Compact Wi-Fi/BLE gateway aggregating data from multiple sensor endpoints in smart building deployments. IC Role / Device Role / Timing Role: Single-chip AC/DC solution delivering regulated 5V to SoC and USB peripherals without transformer or optocoupler. Use Value: Small inductor (330µH) and minimal external parts reduce footprint by >40% vs. traditional flyback designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar offline buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP174G-5-Z | Fixed 5V output, 650V MOSFET, 40mA max output, no integrated LEB or soft-start stages. | Lacks auto-peak-current modulation and multi-stage soft-start; less robust under dynamic load transients. | Prefer AL17052V5W5-7 when light-load efficiency, fast startup, or surge resilience are critical. |
| LNK3206D | 725V MOSFET, 60mA output, but uses opto-coupled feedback and requires transformer-based topology. | Requires isolation transformer and opto-coupler-larger size, higher cost, and more complex layout than AL17052's direct-buck approach. | Choose AL17052V5W5-7 for non-isolated, space-constrained, and cost-sensitive IoT power designs. |
Compared with MP174G-5-Z and LNK3206D, the AL17052V5W5-7 delivers superior light-load efficiency (50% @ 10mA), eliminates isolation components, and provides tighter regulation via VCC-sampling-making it optimal for compact, always-on, transformerless IoT power supplies.
Availability
AL17052V5W5-7 is available at Aetrix Electronics and suitable for smart home sensors, industrial wireless nodes, and white goods control boards requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AL17052V5W5-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AL17052 belongs to Diodes' AC/DC offline converter product line, designed specifically for cost-sensitive, space-constrained, non-isolated IoT and smart appliance power supplies requiring ultra-low standby power and minimal external components.
FAQ
What is the minimum recommended inductor value for AL17052V5W5-7?
The AL17052V5W5-7 is optimized for 330µH inductors in DCM operation. Minimum inductance is determined by Equation 5 in the datasheet: Pomax = ½·L·Ipk² / tMINOFF. For 50mA output, 330µH ensures sufficient energy transfer while maintaining ton > 100ns (LEB margin) and avoiding CCM transition. Standard off-the-shelf 330µH/140mA inductors are validated per Figure 1 design.
Does AL17052V5W5-7 require an external dummy load?
Yes-a 1–3mA dummy load is required on the 5V output to maintain regulation under no-load conditions. This ensures sufficient inductor energy to charge the VCC capacitor for accurate output voltage sampling. Removing the dummy load causes output voltage drift above 5.3V and may trigger OLP due to unstable VCC discharge timing.
How does AL17052V5W5-7 achieve regulation without an opto-coupler?
It uses VCC capacitor voltage as a proxy for output voltage: during MOSFET OFF time, the freewheeling diode charges both COUT and CVCC, making VCC track VOUT with a fixed ratio. Internal error amplifier compares VCC to 2.5V reference, adjusting peak current to regulate VOUT within ±3%-eliminating opto-coupler, TL431, and secondary-side components.
Can AL17052V5W5-7 operate with full-wave rectification?
Yes-it supports both half-wave and full-wave rectified inputs. For full-wave, use 1µF input capacitor (C1); for half-wave, use 2.2µF. Input capacitance must maintain DC bus voltage >70V under worst-case 85VAC/low-line conditions to avoid thermal shutdown. Surge test compliance can be tuned by adjusting C1/C2 values per IEC 61000-4-5 requirements.
AL17052V5W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 50mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AL17052V5W5-7 FAQ
1.How can I place an order for AL17052V5W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL17052V5W5-7 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 AL17052V5W5-7 reliable?
The price and inventory of AL17052V5W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL17052V5W5-7 is usually 5 days.
3.What payment methods are accepted for AL17052V5W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL17052V5W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL17052V5W5-7?
AL17052V5W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL17052V5W5-7 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 AL17052V5W5-7?
For technical support, including AL17052V5W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL17052V5W5-7 requirements.
6.How does Aetrix verify that AL17052V5W5-7 is sourced from the original manufacturer or authorized distributors?
All AL17052V5W5-7 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 AL17052V5W5-7 meets industry standards.
7.What is the process for return or replacement of AL17052V5W5-7?
All AL17052V5W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL17052V5W5-7, 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 AL17052V5W5-7 part is unused and in its original packaging.
Return procedure for AL17052V5W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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