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Diodes Incorporated AP3410KTR-G1
- Part No.:
- AP3410KTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP3410KTR-G1.pdf
- Description:
- IC REG BUCK ADJ 1.2A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,630
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Product details
Overview
AP3410KTR-G1 from Diodes Incorporated is a 1.5MHz synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs, delivering up to 1.2A output current across a 2.5V–5.5V input range and supporting adjustable output voltages from 0.6V to 0.9×VIN. It features 200mΩ RDS(ON) switches, 600mV feedback reference, and built-in protections including UVLO, thermal shutdown, and short-circuit protection - deployed in portable power regulation for PDA and notebook computers.
For engineers reviewing the AP3410KTR-G1 datasheet, AP3410KTR-G1 pinout, AP3410KTR-G1 application, or AP3410KTR-G1 equivalent, key selection criteria include its 1.5MHz fixed-frequency operation enabling compact external components, 100% duty-cycle capability for low-dropout operation, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The AP3410KTR-G1 employs peak-current mode control with an internal 1.5MHz oscillator, eliminating need for external timing components. Its synchronous rectification architecture uses matched 200mΩ PMOS and NMOS switches to minimize conduction loss and eliminate external Schottky diode requirements.
Feedback regulation is based on a precise 600mV reference voltage with ±2% accuracy over temperature and load, and the device supports soft-start (400µs), under-voltage lockout (2.3V rising threshold), and thermal shutdown at 155°C with 30°C hysteresis - all implemented in a single monolithic IC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.5MHz fixed - enables use of small 2.2µH inductors and ceramic capacitors in portable designs |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion, Li-polymer, and USB-powered systems |
| Output Current | 1.2A continuous - sufficient for core logic rails in PDAs and embedded microcontrollers |
| Feedback Reference | 600mV ±2% - sets output via resistor divider; enables 0.6V–0.9×VIN adjustment without external reference |
| RDS(ON) (HS/LS) | 200mΩ each at VIN=5V - reduces conduction loss and improves efficiency above 85% at mid-load |
| Soft-Start Time | 400µs - limits inrush current during power-up, preventing input rail collapse |
| UVLO Threshold | 2.3V (rising), 2.1V (falling) - ensures clean startup/shutdown in battery-discharge scenarios |
Pinout & Package
AP3410KTR-G1 is housed in a RoHS-compliant, lead-free SOT-23-5 package (2.9mm × 2.8mm × 1.3mm), optimized for thermal performance on standard FR-4 PCBs with minimal copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable control input | Active-high logic signal; pulls device into ultra-low 0.1µA shutdown state when low |
| GND | Power ground reference | Common return path for internal power switches and feedback circuitry; requires low-impedance PCB connection |
| LX | Switch node output | Drives external inductor; carries high di/dt switching current - must be routed with minimal loop area |
| VIN | Main power input | Supplies internal bias and power switches; requires local 4.7µF ceramic decoupling near pin |
| FB | Feedback voltage sense | Monitors resistive divider on output rail; regulates VOUT to maintain 600mV at this pin |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 200mΩ HS/LS MOSFETs eliminate external Schottky diode and associated losses |
| 100% duty-cycle operation | Enables dropout as low as VOUT − VIN ≈ 0V - critical for battery-powered systems nearing end-of-discharge |
| Built-in protection suite | UVLO, thermal shutdown (155°C), short-circuit, and over-current protection ensure robust field reliability |
| No external timing components | 1.5MHz oscillator and soft-start capacitor integrated - reduces BOM count and layout sensitivity |
| Low quiescent current | 220µA operating current and 0.1µA shutdown current extend battery life in always-on subsystems |
Applications
| Portable Computing Power Rail | PDA Core Voltage Regulation |
|---|---|
Use Scenario: Regulating 5V USB or battery input to 1.2V/1.8V core supply for ARM-based application processors in ultra-thin notebooks. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing stable, low-noise core voltage with fast transient response. Use Value: 1.5MHz switching enables <2.5mm² total passive footprint; 87% efficiency at 1A reduces thermal load on compact PCBs. | Use Scenario: Generating 3.3V I/O rail from single-cell Li-ion (3.0–4.2V) in handheld PDAs with dynamic load steps. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured via resistor divider to meet multiple voltage domain requirements. Use Value: 0.6V feedback reference and ±3% output accuracy ensure reliable interface signaling across temperature and aging. |
| USB-Powered Peripheral Supply | Low-Power Microcontroller Subsystem |
Use Scenario: Converting 5V USB power to 2.5V analog supply for ADCs, sensors, and RF front-ends in portable test equipment. IC Role / Device Role / Timing Role: Post-regulator delivering clean, low-ripple power with integrated OVP/UVP to protect sensitive analog circuitry. Use Value: Built-in output over-voltage protection clamps VOUT to safe levels during feedback fault conditions. | Use Scenario: Providing 1.0V–1.2V supply to ultra-low-power MCUs (e.g., ARM Cortex-M0+) in battery-backed IoT edge nodes. IC Role / Device Role / Timing Role: High-efficiency, enable-controlled buck converter supporting deep-sleep modes with sub-µA shutdown current. Use Value: 0.1µA shutdown current minimizes battery drain during extended idle periods without external enable logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2158GQ-Z (Monolithic Power) | 2.2MHz switching, 1.5A rating, 0.6V reference, but requires external compensation network | Higher frequency allows smaller inductors but increases EMI sensitivity in noise-critical analog sections | Preferred where board space is tighter than EMI budget permits |
| TI TPS62231DRYR | 3MHz operation, 0.6V reference, 0.65µA shutdown current, but only 600mA output capability | Lower output current limits use to sub-1A MCU cores; superior light-load efficiency below 10mA | Optimal for ultra-low-power sleep-mode dominant applications with modest peak loads |
Compared with MP2158GQ-Z and TPS62231DRYR, the AP3410KTR-G1 balances 1.2A output, 1.5MHz frequency, and full protection integration in SOT-23-5 - making it optimal for cost-sensitive, space-constrained 1A-class portable power rails where design simplicity and reliability are prioritized over extreme frequency or ultra-low quiescent current.
Availability
AP3410KTR-G1 is available at Aetrix Electronics and suitable for portable computing power rail, PDA core voltage regulation, and USB-powered peripheral supply requiring stable component supply and long-term production continuity.
Supply support for AP3410KTR-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, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and the Americas.
The AP3410 belongs to Diodes' high-efficiency DC-DC converter product line, engineered specifically for space-constrained, battery-powered consumer and computing applications demanding low quiescent current, integrated protection, and simplified bill-of-materials.
FAQ
What is the minimum recommended output capacitance for stable operation?
The AP3410KTR-G1 requires a minimum 10µF ceramic output capacitor with ≤5mΩ ESR for stable regulation and adequate ripple suppression. The datasheet specifies 10µF X5R/X7R type as standard; lower values may cause instability or excessive output voltage deviation under load transients.
Can the AP3410KTR-G1 operate with input voltage below 2.5V?
No - the device's absolute minimum input voltage is 2.5V per recommended operating conditions. Below this, UVLO prevents startup, and internal bias circuits cannot sustain regulation. Operation at 2.3V (UVLO falling threshold) results in forced shutdown, not functional operation.
Is the SOT-23-5 package thermally adequate for 1.2A continuous output?
Yes, when mounted on a 1-inch² 2oz copper pad with two thermal vias, the SOT-23-5 achieves θJA ≈ 120°C/W in typical layouts, limiting junction rise to ~100°C at 1.2A/5V input. Derating is advised above 70°C ambient or with reduced copper area.
Does the AP3410KTR-G1 support forced PWM mode or only auto PFM/PWM?
The AP3410KTR-G1 operates exclusively in automatic PFM/PWM mode - no external pin or register controls forced PWM. At light loads (<10mA), it enters PFM to maintain >80% efficiency; PWM resumes automatically above ~20mA with seamless transition and no audible switching noise.
AP3410KTR-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
AP3410KTR-G1 FAQ
1.How can I place an order for AP3410KTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3410KTR-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 AP3410KTR-G1 reliable?
The price and inventory of AP3410KTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3410KTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3410KTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3410KTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3410KTR-G1?
AP3410KTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3410KTR-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 AP3410KTR-G1?
For technical support, including AP3410KTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3410KTR-G1 requirements.
6.How does Aetrix verify that AP3410KTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3410KTR-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 AP3410KTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3410KTR-G1?
All AP3410KTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3410KTR-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 AP3410KTR-G1 part is unused and in its original packaging.
Return procedure for AP3410KTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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