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Diodes Incorporated AP3410BKTR-G1
- Part No.:
- AP3410BKTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP3410BKTR-G1.pdf
- Description:
- IC REG BUCK ADJ 1.2A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,938
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Product details
Overview
AP3410BKTR-G1 from Diodes Incorporated is a 1.5MHz synchronous step-down DC-DC converter with integrated high- and low-side MOSFETs, operating from 2.5V to 5.5V input and delivering up to 1.2A output current. It features adjustable output voltage (0.6V to 0.9×VIN), 600mV feedback reference, and built-in protections including UVLO, thermal shutdown, short-circuit, over-voltage, and over-current. Used in portable power regulation for PDAs and notebook computers.
For engineers reviewing the AP3410BKTR-G1 datasheet, AP3410BKTR-G1 pinout, AP3410BKTR-G1 application, or AP3410BKTR-G1 equivalent, key selection considerations include its 1.5MHz fixed-frequency operation, SOT-23-5 package constraints, 200mΩ RDS(ON) at 5V, soft-start timing of 400μs, and compatibility with small external inductors (e.g., 2.2μH) for space-constrained designs.
Technical Context
The AP3410BKTR-G1 employs peak-current mode control with internal oscillator and timing capacitors, enabling stable 1.5MHz switching without external frequency-setting components. Its synchronous rectification eliminates the need for an external Schottky diode and supports 100% duty cycle for low-dropout operation.
Feedback is regulated via a precision 600mV reference with ±2% accuracy over temperature and load. Protection circuitry includes under-voltage lockout (2.3V rising threshold), thermal shutdown at 155°C, and cycle-by-cycle current limiting with short-circuit recovery behavior confirmed in test waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.5MHz fixed - enables use of compact 2.2μH inductors and reduces output ripple filtering requirements. |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, Li-polymer, and dual-cell alkaline/NiMH battery inputs. |
| Output Current | 1.2A continuous - sufficient for core logic rails in portable computing and embedded microcontrollers. |
| Feedback Reference | 600mV ±2% - sets output voltage via external resistor divider; enables precise regulation down to 0.6V. |
| RDS(ON) (High/Low-Side) | 200mΩ each at VIN=5V - minimizes conduction loss and improves full-load efficiency (>90% typical at 1.2A). |
| Soft Start Time | 400μs - controls inrush current during power-up, preventing input rail sag and output overshoot. |
| Thermal Shutdown | 155°C with 30°C hysteresis - protects die integrity during sustained overload or poor PCB thermal design. |
Pinout & Package
The AP3410BKTR-G1 is housed in a RoHS-compliant, green SOT-23-5 package with exposed pad for thermal enhancement (mechanical dimensions per DS42574 Rev.2). Pin 1 is VIN; Pin 2 is GND; Pin 3 is EN; Pin 4 is FB; Pin 5 is LX. The package supports standard reflow profiles and requires optimized PCB copper pour for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input supply | Accepts 2.5–5.5V input; connects to bulk capacitor and must be decoupled near the pin. |
| GND (Pin 2) | Ground reference | Primary return path for power and control circuits; ties to power ground plane under IC. |
| EN (Pin 3) | Enable control input | Active-high logic input (1.5V threshold); used for sequencing or standby mode control. |
| FB (Pin 4) | Feedback node | Monitors output voltage via resistor divider; regulates VOUT to 0.6V at this pin. |
| LX (Pin 5) | Switch node | Drives external inductor; carries high di/dt switching current - requires short, low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 200mΩ high- and low-side MOSFETs eliminate external Schottky diode and improve light-load efficiency. |
| 100% duty cycle operation | Enables dropout as low as VOUT − VIN ≈ 0, supporting ultra-low input-to-output differentials (e.g., 3.3V out from 3.6V battery). |
| Built-in protection suite | UVLO (2.3V), thermal shutdown (155°C), short-circuit, over-voltage, and over-current - reduces external fault-handling circuitry. |
| Internal soft start | 400μs monotonic ramp prevents output overshoot and limits inrush into downstream capacitance. |
| No external timing components | 1.5MHz oscillator and timing network fully integrated - simplifies BOM and layout while ensuring frequency stability. |
Applications
| Portable Computing Power Rails | PDA Core Voltage Regulation |
|---|---|
Use Scenario: Regulating 3.3V or 1.2V supply for CPU I/O or memory interfaces in space-constrained notebooks. IC Role / Device Role / Timing Role: Primary buck regulator providing clean, efficient, and sequenced core voltage. Use Value: 1.5MHz switching allows 2.2μH inductor and <10mm² total solution size; 1.2A rating supports burst-mode processor loads. |
Use Scenario: Generating stable 1.8V or 2.5V rail for PDA application processors and display controllers. IC Role / Device Role / Timing Role: Adjustable synchronous buck converter with enable control for system-level power gating. Use Value: 600mV feedback reference and ±3% output accuracy ensure reliable logic-level compliance across battery discharge range. |
| USB-Powered Peripherals | Industrial Sensor Node Supplies |
Use Scenario: Converting 5V USB input to 3.3V for MCU, transceivers, and analog front-ends in portable instruments. IC Role / Device Role / Timing Role: Input-tolerant buck regulator with over-voltage protection on VIN and output. Use Value: Built-in 6V absolute max VIN and OVP prevent damage from USB transient surges; 2.5–5.5V range matches USB spec. |
Use Scenario: Providing 1.2V or 1.0V supply to ultra-low-power microcontrollers and ADCs in battery-operated sensor nodes. IC Role / Device Role / Timing Role: High-efficiency step-down converter with low quiescent current (220μA active, 0.1μA shutdown). Use Value: 90%+ efficiency at 10mA–100mA loads extends battery life; thermal shutdown ensures reliability in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP3411BKTR-G1 | Same SOT-23-5 package and 1.5MHz frequency, but fixed 3.3V output (no FB pin); lacks adjustable feedback and EN control. | Only suitable for fixed 3.3V applications; no voltage scaling or sequencing capability. | Select only when output voltage is fixed and external feedback is unnecessary. |
| MP2152GQZ-P | 2MHz switching, 2A output, QFN-8 package; higher current, smaller footprint, but requires external compensation and has different pinout. | Better suited for higher-current or higher-density layouts; not drop-in compatible due to package and control interface differences. | Choose when >1.2A output or tighter board area is required, and redesign of layout/feedback network is acceptable. |
Compared with AP3410BKTR-G1, AP3411BKTR-G1 trades adjustability for simplicity in fixed-rail systems, while MP2152GQZ-P offers higher performance at the cost of increased design complexity and non-interchangeable packaging.
Availability
AP3410BKTR-G1 is available at Aetrix Electronics and suitable for portable computing power rails, PDA voltage regulation, and USB-powered peripheral supplies requiring stable component supply and long-term design-in support despite its obsolete status.
Supply support for AP3410BKTR-G1 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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP3410B belongs to Diodes' high-frequency synchronous buck converter product line, designed specifically for compact, battery-powered applications where efficiency, small solution size, and integrated protection are critical.
FAQ
Is AP3410BKTR-G1 still in active production?
No - Diodes Incorporated has marked AP3410BKTR-G1 as obsolete per DS42574 Rev.2 (April 2020). However, Aetrix Electronics maintains legacy inventory and supports last-time buys with full traceability, documentation, and engineering consultation for ongoing production programs.
What is the maximum achievable output voltage accuracy over temperature and load?
The AP3410BKTR-G1 guarantees ±3% output voltage accuracy across input range (2.5–5.5V), output load (0–1.2A), and ambient temperature (−40°C to +85°C), based on 600mV feedback reference tolerance of ±2% and resistor divider drift contributions.
Can AP3410BKTR-G1 operate with input voltage below 2.5V?
No - the recommended minimum input voltage is 2.5V, and UVLO activates at 2.3V (rising edge). Operation below 2.5V risks unstable regulation, premature shutdown, or failure to start; it is not characterized or guaranteed in that region.
Does the LX pin require a snubber network?
Not typically - the AP3410BKTR-G1's integrated MOSFETs and optimized gate drive minimize ringing. However, if layout-induced voltage spikes exceed 6V or cause EMI issues, a 10Ω resistor + 100pF capacitor from LX to GND may be added per Diodes' layout guidelines in DS42574.
AP3410BKTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.95V
- Current - Output:
- 1.2A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AP3410BKTR-G1 FAQ
1.How can I place an order for AP3410BKTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3410BKTR-G1 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 AP3410BKTR-G1 reliable?
The price and inventory of AP3410BKTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3410BKTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3410BKTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3410BKTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3410BKTR-G1?
AP3410BKTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3410BKTR-G1 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 AP3410BKTR-G1?
For technical support, including AP3410BKTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3410BKTR-G1 requirements.
6.How does Aetrix verify that AP3410BKTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3410BKTR-G1 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 AP3410BKTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3410BKTR-G1?
All AP3410BKTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3410BKTR-G1, 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 AP3410BKTR-G1 part is unused and in its original packaging.
Return procedure for AP3410BKTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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