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Diodes Incorporated AP3406AMM-ADJTRG1
- Part No.:
- AP3406AMM-ADJTRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AP3406AMM-ADJTRG1.pdf
- Description:
- IC REG BUCK ADJ 800MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
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Product details
Overview
AP3406AMM-ADJTRG1 from BCD Semiconductor Manufacturing Limited is a 1.1MHz current-mode synchronous buck DC-DC converter in MSOP-10 package, delivering up to 800mA output current with input range 2.5V–5.5V and adjustable output voltage via external resistor divider on FB pin. It integrates high-side PFET (0.44Ω RDS(ON)) and low-side NFET (0.29Ω), supports 100% duty cycle in dropout, and features thermal shutdown (160°C), short-circuit protection, and <1µA shutdown current - used in GPS modules and portable media players powered by single Li-ion cells.
For engineers reviewing the AP3406AMM-ADJTRG1 datasheet, AP3406AMM-ADJTRG1 pinout, AP3406AMM-ADJTRG1 application, or AP3406AMM-ADJTRG1 equivalent, key selection criteria include its 1.1MHz fixed-frequency operation, synchronous topology eliminating external Schottky diode, EN-controlled enable/disable functionality, and compatibility with standard 10µH inductors for rapid power supply design.
Technical Context
The AP3406AMM-ADJTRG1 employs peak current-mode control with internal oscillator set to 1.1MHz (±30%), enabling stable regulation across line (2.5–5.5V) and load (0–800mA) variations. Its feedback loop uses a precision 0.600V reference (±2%) at FB pin, allowing output voltage adjustment from ~0.6V to near VIN via resistor divider.
It integrates complementary power switches (PFET/NFET) with matched RDS(ON), supports 100% duty cycle for ultra-low dropout, and includes autonomous protection mechanisms: hiccup-mode short-circuit response, thermal shutdown with 30°C hysteresis, and under-voltage lockout (2.27V with 200mV hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (2.7–4.2V) and USB-powered systems without pre-regulation. |
| Output Current | 800mA continuous - sufficient for core logic rails in GPS/WiFi SoCs and camera ISPs. |
| Switching Frequency | 1.1MHz (typ.) - enables use of compact 10µH inductors and 10µF ceramic capacitors for space-constrained PCBs. |
| Feedback Reference | 0.600V ±2% - sets output voltage accuracy; allows 0.6V–VIN adjustment using standard resistor tolerances. |
| Shutdown Current | <1µA - preserves battery life in standby mode for portable devices with frequent sleep/wake cycles. |
| Thermal Shutdown | 160°C with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Current Limit | 0.95–1.25A - provides robust overcurrent protection while allowing transient peaks above 800mA nominal. |
Pinout & Package
AP3406AMM-ADJTRG1 is housed in a thermally enhanced MSOP-10 package (3mm × 3mm × 1.0mm), featuring exposed PGND pad for improved thermal dissipation and EMI performance. Pin 1 marked with dot; pin 10 is PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 8) | Enable control input | Logic-level interface: >1.5V enables regulator; <0.6V disables with sub-1µA quiescent draw. |
| VIN (Pin 1) | Main power input | Accepts 2.5–5.5V; requires ≥10µF ceramic bypass capacitor to GND/PGND for stability and noise suppression. |
| FB (Pin 5) | Feedback sensing node | Connects to resistor divider; regulates output by maintaining 0.600V at this pin - sets VOUT = 0.6×(1+R1/R2). |
| GND (Pin 3) | Analog ground reference | Low-noise return path for internal error amplifier and oscillator; must be separated from PGND in layout. |
| SW (Pin 4) | Power switch node | Drain connection of internal PFET/NFET; drives external inductor; high dv/dt node requiring tight loop area. |
| PGND (Pin 10) | Power ground terminal | High-current return for internal switches and inductor; connects to thermal pad for heat conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated PFET (0.44Ω) + NFET (0.29Ω) eliminates external Schottky diode, improving efficiency by ~8–12% at medium loads. |
| 100% duty-cycle operation | Enables VOUT regulation down to VIN − 0.2V, critical for Li-ion end-of-discharge support (e.g., 3.0V → 2.8V rail). |
| Current-mode PWM control | Provides inherent cycle-by-cycle current limiting, fast transient response (<100µs), and simplified loop compensation. |
| Built-in protection suite | Includes thermal shutdown (160°C), hiccup-mode short-circuit recovery, and UVLO (2.27V) - no external components required. |
| Ultra-low shutdown current | <1µA enables multi-week battery shelf life in always-on portable devices with periodic wake-up intervals. |
Applications
| GPS Module Power Supply | WiFi Card Core Rail |
|---|---|
|
Use Scenario: Powers baseband processor and RF front-end in compact GPS receivers operating from 3.7V Li-ion battery. IC Role / Device Role / Timing Role: Primary step-down regulator generating stable 1.8V or 3.3V core voltage with tight load regulation during satellite acquisition bursts. Use Value: 95% peak efficiency at 300mA reduces thermal load in sealed enclosures; 1.1MHz switching avoids AM radio band interference. |
Use Scenario: Supplies 3.3V logic rail to IEEE 802.11b/g/n WiFi cards in handheld scanners and IoT gateways. IC Role / Device Role / Timing Role: High-efficiency buck converter with fast load transient response to handle MAC-layer packet transmission spikes (0→600mA in <50µs). Use Value: Built-in current limit (1.25A) and thermal shutdown prevent latch-up during antenna mismatch or firmware faults. |
| Portable Media Player SoC | Digital Camera Image Sensor Bias |
|
Use Scenario: Generates 1.2V core voltage for ARM-based application processors in MP3/MP4 players with 20-hour battery life. IC Role / Device Role / Timing Role: Adjustable-output buck regulator supporting dynamic voltage scaling (DVS) via MCU-controlled FB divider resistors. Use Value: 100% duty cycle extends usable battery range from 4.2V down to 2.8V, adding ~12% runtime versus non-dropout converters. |
Use Scenario: Provides clean, low-noise 2.8V bias to CMOS image sensors in digital still/video cameras during active exposure. IC Role / Device Role / Timing Role: Low-ripple DC-DC supply with soft-start (220µs) preventing sensor reset glitches during power-up sequences. Use Value: Integrated synchronous switches reduce output ripple to <20mVpp, minimizing image sensor fixed-pattern noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2108DJ-LF-Z (Monolithic Power) | Fixed 1.5MHz frequency; 600mA rating; no 100% duty cycle; requires external bootstrap capacitor. | Limited to higher-VIN applications (>3V); unsuitable for deep Li-ion discharge below 3.0V. | Prefer when board space is tighter (TSOT-23-6) and full 800mA not required. |
| TPS62231DRVR (Texas Instruments) | 1.8MHz switching; 600mA; integrated soft-start; lower IQ (25µA) but no thermal shutdown hysteresis spec. | Better light-load efficiency; lacks hiccup-mode short-circuit recovery and explicit thermal hysteresis. | Select for ultra-low-power always-on nodes where 600mA suffices and thermal margin is well controlled. |
Compared with MP2108DJ-LF-Z and TPS62231DRVR, AP3406AMM-ADJTRG1 uniquely combines 800mA capability, 100% duty cycle, and fully autonomous thermal/short-circuit protection - making it optimal for cost-sensitive, battery-critical portable designs where reliability across full voltage range matters.
Availability
AP3406AMM-ADJTRG1 is available at Aetrix Electronics and suitable for GPS modules, WiFi cards, and portable media players requiring stable component supply, RoHS-compliant green packaging (G1 suffix), and long-term industrial temperature support (−40°C to +85°C).
Supply support for AP3406AMM-ADJTRG1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and mixed-signal IC designer and foundry, specializing in high-performance power management, LED drivers, and audio amplifiers for consumer and industrial markets.
The AP3406A series targets space-constrained portable electronics, delivering high-efficiency synchronous buck conversion with minimal external components - designed specifically for Li-ion-powered devices needing wide input range, low quiescent current, and robust protection.
FAQ
What is the minimum recommended output capacitor value for AP3406AMM-ADJTRG1?
The datasheet specifies ≥10µF ceramic output capacitance for stable operation. Using X5R/X7R 10µF/6.3V MLCCs with ≤10mΩ ESR ensures adequate phase margin and limits output ripple to <30mVpp at 800mA. Lower values risk instability or excessive voltage deviation during load transients.
Can AP3406AMM-ADJTRG1 operate with an input voltage below 2.5V?
No - the absolute minimum input voltage is 2.5V per Recommended Operating Conditions. Below this, UVLO activates (threshold 2.27V) and the device shuts down. Sustained operation below 2.5V risks failure to regulate or uncontrolled behavior, even if EN is asserted.
How does the EN pin behave during power-up sequencing?
The EN pin has 1.5V turn-on and 0.6V turn-off thresholds with hysteresis. During slow-ramping VIN, EN must exceed 1.5V *after* VIN stabilizes above 2.5V to avoid premature enable. Fast-rising EN (e.g., from MCU GPIO) initiates soft-start (220µs) only after internal bias is established.
Is the MSOP-10 package of AP3406AMM-ADJTRG1 pin-compatible with other AP3406A variants?
No - TSOT-23-5 (5-pin), MSOP-10 (10-pin), and DFN-2×2-6(1) (6-pin) packages have distinct pin counts and layouts. The MSOP-10 includes dedicated PGND (Pin 10) and NC pins (Pins 2, 6, 7, 9), unlike TSOT-23-5 which merges GND and PGND. Layouts are not interchangeable.
AP3406AMM-ADJTRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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):
- 5.5V
- Current - Output:
- 800mA
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
AP3406AMM-ADJTRG1 FAQ
1.How can I place an order for AP3406AMM-ADJTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3406AMM-ADJTRG1 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 AP3406AMM-ADJTRG1 reliable?
The price and inventory of AP3406AMM-ADJTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3406AMM-ADJTRG1 is usually 5 days.
3.What payment methods are accepted for AP3406AMM-ADJTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3406AMM-ADJTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3406AMM-ADJTRG1?
AP3406AMM-ADJTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3406AMM-ADJTRG1 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 AP3406AMM-ADJTRG1?
For technical support, including AP3406AMM-ADJTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3406AMM-ADJTRG1 requirements.
6.How does Aetrix verify that AP3406AMM-ADJTRG1 is sourced from the original manufacturer or authorized distributors?
All AP3406AMM-ADJTRG1 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 AP3406AMM-ADJTRG1 meets industry standards.
7.What is the process for return or replacement of AP3406AMM-ADJTRG1?
All AP3406AMM-ADJTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3406AMM-ADJTRG1, 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 AP3406AMM-ADJTRG1 part is unused and in its original packaging.
Return procedure for AP3406AMM-ADJTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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