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Diodes Incorporated AP65111AWU-7
- Part No.:
- AP65111AWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP65111AWU-7.pdf
- Description:
- IC REG BUCK ADJ 1.5A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:4,236
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Product details
Overview
AP65111AWU-7 from Diodes Incorporated is a 500kHz, internally compensated synchronous DC/DC buck converter in TSOT26 package, integrating high- and low-side MOSFETs with RDS(ON) of 200mΩ/120mΩ. It delivers up to 1.5A continuous output current with peak efficiency of 97%, features automated light-load efficiency improvement, and operates across 4.5V–18V input for FPGA/DSP power rails in consumer electronics.
For engineers reviewing the AP65111AWU-7 datasheet, AP65111AWU-7 pinout, AP65111AWU-7 application, or AP65111AWU-7 equivalent, key selection criteria include its 0.8V feedback threshold, hiccup-mode overcurrent protection, thermal shutdown at +160°C, and compatibility with standard 6.5µH inductors and 22µF ceramic output capacitors.
Technical Context
The AP65111AWU-7 implements current-mode control with 0.22V/A current sense gain and 0.9V/T slope compensation to suppress subharmonic oscillation above 50% duty cycle. Its internal error amplifier regulates output via a 0.8V reference, and the 500kHz oscillator drives PWM logic with dead-time control to prevent shoot-through.
It integrates undervoltage lockout (4.05V rising threshold, 250mV hysteresis), overvoltage protection (trip at 115% of 0.8V), and thermal shutdown with +20°C hysteresis. The EN pin supports automatic startup via 100kΩ pull-up, and BST requires ≥0.01µF capacitor from SW to enable high-side gate drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 18V - supports 5V, 12V, and 18V intermediate bus architectures without external LDO pre-regulation. |
| Output Current | 1.5A continuous - sufficient for powering single-core FPGA I/O banks or DSP core supplies under full load. |
| Switching Frequency | 500kHz (±20%) - enables use of compact 6.5µH inductors while maintaining EMI below 1MHz fundamental. |
| Feedback Voltage | 0.8V ±24mV - sets precise output regulation point; allows adjustable VOUT from 0.8V using resistor divider. |
| Efficiency Peak | 97% at 12VIN/3.3VOUT/1A - minimizes thermal load in space-constrained consumer enclosures. |
| Quiescent Current | 0.725mA typical - ensures low standby power in always-on subsystems like HDMI receiver logic. |
| Thermal Shutdown | +160°C with +20°C hysteresis - protects against sustained overload or poor PCB heatsinking in sealed devices. |
Pinout & Package
AP65111AWU-7 is housed in a RoHS-compliant, halogen-free Green TSOT26 package (2.9mm × 1.6mm × 0.6mm, 0.95mm pitch), optimized for thermal dissipation (θJA = 120°C/W) on 2oz copper FR-4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Supplies IC bias and switching stage; requires ≥22µF ceramic bypass capacitor close to pin to suppress dI/dt noise. |
| 2 GND | Ground Reference | Common return for power switches, feedback, and internal regulators; must connect to solid ground plane with minimal impedance. |
| 3 SW | Switch Node | Drives external LC filter; voltage swings from ~0V to VIN; connects directly to BST capacitor and inductor. |
| 4 BST | Bootstrap Supply | Provides gate drive voltage for high-side MOSFET; requires ≥0.01µF capacitor between BST and SW pins. |
| 5 EN | Enable Control | Digital ON/OFF input (1.4–1.6V rising threshold); internal pull-down enables default-off behavior; 100kΩ pull-up enables auto-start. |
| 6 FB | Feedback Input | Senses output via resistive divider; 0.8V reference enables accurate VOUT setting; sensitive node requiring short trace to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Automated Light-Load Efficiency Mode | Enters discontinuous conduction mode when inductor valley current drops below 0A, reducing quiescent loss at no-load. |
| Hiccup-Mode Overcurrent Protection | Disables switching and retries periodically upon OCP trigger, limiting average power dissipation during sustained short-circuit. |
| Internal Soft-Start | 1ms ramp time prevents inrush current into output capacitors, eliminating need for external soft-start circuitry. |
| Integrated Power MOSFETs | 200mΩ high-side and 120mΩ low-side RDS(ON) reduce conduction loss and eliminate discrete FET layout complexity. |
| Robust Protection Suite | Combines UVLO (4.05V), OVP (0.92V FB trip), thermal shutdown (+160°C), and cycle-by-cycle current limit (3.0A peak). |
Applications
| Gaming Console Power Rails | FPGA Core Voltage Supply |
|---|---|
|
Use Scenario: Providing stable 1.2V/1.8V rails for GPU memory interfaces and controller logic in compact handheld gaming systems. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated voltage with fast transient response to burst-mode GPU loads. Use Value: 97% peak efficiency and automated light-load mode extend battery runtime during menu navigation and suspend states. |
Use Scenario: Generating configurable core voltage (0.8V–1.2V) for Xilinx Artix-7 or Intel Cyclone V FPGA fabric under dynamic logic utilization. IC Role / Device Role / Timing Role: Adjustable-output DC/DC converter with tight 0.8V feedback reference enabling precise VCCINT compliance per device spec. Use Value: Internal compensation and current-mode control ensure stability across wide load range without external loop tuning components. |
| Flat Panel TV Backlight Driver Bias | Network Router PoE-Powered Subsystem |
|
Use Scenario: Powering LED driver IC bias rails and microcontroller peripherals in 4K UHD TV mainboards with strict thermal limits. IC Role / Device Role / Timing Role: Secondary buck converter stepping down 12V system rail to 3.3V/5V for analog front-end and timing controllers. Use Value: TSOT26 footprint and 120°C/W θJA allow placement near heat-sensitive display timing ICs without derating. |
Use Scenario: Converting 48V PoE-derived 12V intermediate bus to 1.0V/1.8V for switch ASICs and PHY transceivers in compact SOHO routers. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator supporting bursty packet-processing loads with <100µs transient recovery. Use Value: 500kHz switching frequency balances inductor size and EMI filtering requirements in dense, shielded router PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP62200WU-7 | Successor part with identical pinout, same 4.5–18V input, but improved 2.0A rating and 98% peak efficiency. | Supports higher-current FPGA cores and multi-lane SerDes supplies where AP65111AWU-7 reaches thermal limit. | Select when new designs require extended lifetime support and higher output capability without layout change. |
| MP2451DT-LF-Z | Monolithic 2A buck with 36V max input, 340kHz fSW, and different pinout (no BST pin; integrated bootstrap capacitor). | Better suited for industrial 24V input systems; lacks automated light-load mode and has lower light-load efficiency. | Choose only if input exceeds 18V or if board redesign accommodates non-pin-compatible layout and different feedback network. |
Compared with AP65111AWU-7, AP62200WU-7 offers higher current headroom and longer-term supply assurance, while MP2451DT-LF-Z trades pin compatibility for wider input range-neither is drop-in replaceable without validation of thermal, transient, and light-load behavior.
Availability
AP65111AWU-7 is available at Aetrix Electronics and suitable for gaming consoles, flat-panel TVs, and FPGA power delivery requiring stable component supply despite its obsolete status-inventory is secured for legacy design continuity and repair programs.
Supply support for AP65111AWU-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-performance power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.
The AP65111A belongs to Diodes' monolithic synchronous buck converter product line, designed specifically for space-constrained, efficiency-critical DC/DC conversion in consumer electronics and distributed power architectures.
FAQ
Is AP65111AWU-7 still in production?
No-AP65111AWU-7 is officially discontinued by Diodes Incorporated as of August 2023 (DS39760 Rev. 3–4). Aetrix Electronics maintains limited legacy stock for last-time buy and repair fulfillment, with documented traceability and full RoHS/Green compliance verification per original lot data.
Can AP65111AWU-7 be replaced with AP62200WU-7 on the same PCB?
Yes-AP62200WU-7 is a direct pin- and function-compatible successor with identical TSOT26 footprint, EN/FB/SW/BST/IN/GND pin mapping, and matching feedback voltage (0.8V). No layout changes are required; only minor output capacitor revalidation may be needed due to higher 2A capability.
What is the minimum recommended output capacitor for stable operation?
Diodes specifies a minimum 22µF X5R/X7R ceramic capacitor at the output, placed within 3mm of the FB and GND pins. This value ensures loop stability across 0.8V–5V outputs and supports ≤100mVpp ripple at 1.5A with typical 6.5µH inductor and 20mΩ ESR.
Does AP65111AWU-7 require an external bootstrap diode?
An external Schottky bootstrap diode (e.g., B130 or SK13) is recommended only when VIN ≤ 5V or when duty cycle exceeds 65%, to maintain high-side gate drive strength. At 12V input and typical 3.3V output (28% duty), the internal charge pump suffices without added diode.
AP65111AWU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 14.72V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26
AP65111AWU-7 FAQ
1.How can I place an order for AP65111AWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP65111AWU-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 AP65111AWU-7 reliable?
The price and inventory of AP65111AWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP65111AWU-7 is usually 5 days.
3.What payment methods are accepted for AP65111AWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP65111AWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP65111AWU-7?
AP65111AWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP65111AWU-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 AP65111AWU-7?
For technical support, including AP65111AWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP65111AWU-7 requirements.
6.How does Aetrix verify that AP65111AWU-7 is sourced from the original manufacturer or authorized distributors?
All AP65111AWU-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 AP65111AWU-7 meets industry standards.
7.What is the process for return or replacement of AP65111AWU-7?
All AP65111AWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP65111AWU-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 AP65111AWU-7 part is unused and in its original packaging.
Return procedure for AP65111AWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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