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Diodes Incorporated AP7354D-15FS4-7
- Part No.:
- AP7354D-15FS4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7354D-15FS4-7.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
AP7354D-15FS4-7 from Diodes Incorporated is a 150mA ultra-low quiescent current (0.25µA typical) fixed-output 1.5V LDO regulator in X2-DFN1010-4 (Type B) package, featuring ±1% output voltage accuracy, active output discharge, and 2.0V–5.5V input range. It delivers stable power to wearable sensors and IoT edge nodes where battery life extension and fast shutdown are critical.
For engineers reviewing the AP7354D-15FS4-7 datasheet, AP7354D-15FS4-7 pinout, AP7354D-15FS4-7 application, or AP7354D-15FS4-7 equivalent, key selection criteria include quiescent current vs. load step response, EN pin threshold compatibility with MCU GPIOs, discharge resistance value (35Ω), and thermal performance in 1.0mm × 1.0mm DFN layout.
Technical Context
The AP7354D integrates a precision voltage reference, error amplifier, current-limit protection, and enable-controlled pass transistor. Its architecture supports fast turn-on/turn-off timing (typ. 20µs/15µs at 150mA load) and maintains stability with only 0.1µF ceramic input/output capacitors.
Unlike non-discharge variants, the 'D' suffix denotes integrated active output discharge via internal 35Ω NMOS switch tied to EN low state-enabling rapid VOUT collapse during shutdown to prevent back-powering of downstream circuitry in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% at +25°C; ±2% over –40°C to +85°C - ensures reliable logic-level supply for 1.5V/1.8V I/O domains. |
| Quiescent Current | 0.25µA typical - enables >10-year battery life in coin-cell-powered devices drawing <1µA average current. |
| Output Discharge Resistance | 35Ω - discharges 10µF load to <0.1V in <350µs, preventing latch-up in powered-down subsystems. |
| Dropout Voltage | 0.43V at 150mA - allows operation down to 1.93V input, supporting single-cell LiFePO₄ or dual-cell alkaline sources. |
| EN Input Threshold | VIL ≤ 0.4V, VIH ≥ 1.0V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
| Thermal Resistance θJA | 295°C/W - requires minimal copper area (≥25mm²) for full 150mA continuous output at +85°C ambient. |
Pinout & Package
X2-DFN1010-4 (Type B) package: 1.0mm × 1.0mm body, 0.65mm pitch, no exposed pad; RoHS-compliant NiPdAu-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Main regulated output; connects directly to load and 0.1µF ceramic capacitor; trace impedance must be minimized for transient response. |
| 2 | GND | Primary ground reference; must connect to system ground plane with low-inductance path to avoid regulation instability. |
| 3 | EN | Active-high enable; driven by microcontroller GPIO; floating state prohibited - tie to VIN if always-on operation required. |
| 4 | VIN | Input supply (2.0–5.5V); requires local 0.1µF decoupling capacitor placed within 2mm of pin to suppress supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 0.25µA typical enables >10-year shelf life in energy-harvesting sensor nodes with intermittent wake cycles. |
| Integrated output discharge | 35Ω NMOS switch activated on EN low eliminates need for external bleed resistor, saving board space and BOM cost. |
| High accuracy over temperature | ±1% at +25°C, ±2% across –40°C to +85°C - reduces need for post-regulation trimming in industrial sensor modules. |
| Stable with minimal capacitance | Guaranteed stability with 0.1µF X5R/X7R ceramic COUT - avoids large tantalum or polymer caps in space-constrained wearables. |
| Robust ESD protection | 4kV HBM, 400V MM - withstands handling and assembly without additional protection circuitry in consumer-grade production. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 coin cell with 5-year target lifetime. IC Role / Device Role / Timing Role: Primary 1.5V supply for analog front-end and BLE SoC; regulates during RF transmit bursts. Use Value: 0.25µA quiescent current extends battery life beyond 5 years; active discharge prevents leakage into disabled ADC channels. |
Use Scenario: Battery-powered soil moisture/temperature node transmitting hourly via LoRaWAN. IC Role / Device Role / Timing Role: Power source for ultra-low-power MCU and capacitive sensing IC during 20ms active window. Use Value: Fast 20µs turn-on ensures full regulation before ADC sampling; 35Ω discharge clears residual charge before sleep mode entry. |
| Smart Camera Module | Industrial Wireless Transmitter |
Use Scenario: Miniaturized USB-C camera using single-cell Li-ion with tight thermal envelope. IC Role / Device Role / Timing Role: Clean 1.5V rail for image signal processor core voltage, isolated from noisy USB VBUS. Use Value: 0.43V dropout enables operation down to 1.93V cell voltage; ±1% accuracy maintains consistent ISP clock domain timing. |
Use Scenario: DIN-rail mounted vibration sensor with 4–20mA loop power and wireless backup. IC Role / Device Role / Timing Role: Standby supply for real-time clock and wake-up controller during main system power-off. Use Value: 0.02µA standby current minimizes loop power draw; EN pin allows synchronized shutdown with host PLC control signal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | No active discharge; 1.6µA IQ; SOT23-3 package | Lacks output discharge; higher IQ reduces battery life in deep-sleep systems | Select when board space permits larger SOT23 and discharge not required |
| Torex XC6210B152MR-G | 0.6µA IQ; no discharge; 0.8mm × 0.8mm DFN package | Smaller footprint but no discharge path; lower max output current (100mA) | Choose for ultra-compact designs with <100mA loads and no back-powering risk |
Compared with MCP1700T-1502E/TT and XC6210B152MR-G, the AP7354D-15FS4-7 uniquely combines sub-µA quiescent current, integrated discharge, and 150mA capability in a 1.0mm × 1.0mm footprint-making it optimal for battery-critical, multi-rail IoT endpoints requiring clean shutdown behavior.
Availability
AP7354D-15FS4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for AP7354D-15FS4-7 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP7354 series belongs to Diodes' ultra-low-IQ LDO product line, engineered specifically for extended-battery-life portable and IoT edge devices where micropower efficiency and fast dynamic response are mandatory.
FAQ
What is the minimum input voltage required for 1.5V output at 150mA load?
The AP7354D-15FS4-7 requires a minimum input voltage of 1.93V at 150mA load, based on its maximum dropout voltage of 0.43V at that condition. Operation below this voltage causes output regulation loss and uncontrolled voltage droop.
Can the EN pin be left unconnected in always-on applications?
No - the EN pin must never be left floating. For always-on operation, tie EN directly to VIN. Floating EN risks partial turn-on, increased leakage, or erratic regulation due to noise coupling into the high-impedance enable input.
Does the output discharge function operate when EN is pulled low via a resistor divider?
Yes - the discharge circuit activates whenever the EN pin voltage falls below 0.4V (VIL), regardless of drive method. Resistor dividers are acceptable if they guarantee EN < 0.4V under all operating conditions, including worst-case voltage tolerances.
Is the X2-DFN1010-4 (Type B) package compatible with standard reflow profiles?
Yes - the package is qualified for IPC/JEDEC J-STD-020 Level 1 moisture sensitivity and supports standard lead-free reflow profiles (peak 260°C). Recommended pad layout uses 0.35mm × 0.35mm solder paste apertures with 0.112mm stencil thickness.
AP7354D-15FS4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.75V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 0.6 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1010-4 (Type B)
AP7354D-15FS4-7 FAQ
1.How can I place an order for AP7354D-15FS4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354D-15FS4-7 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 AP7354D-15FS4-7 reliable?
The price and inventory of AP7354D-15FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7354D-15FS4-7 is usually 5 days.
3.What payment methods are accepted for AP7354D-15FS4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354D-15FS4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354D-15FS4-7?
AP7354D-15FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354D-15FS4-7 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 AP7354D-15FS4-7?
For technical support, including AP7354D-15FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354D-15FS4-7 requirements.
6.How does Aetrix verify that AP7354D-15FS4-7 is sourced from the original manufacturer or authorized distributors?
All AP7354D-15FS4-7 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 AP7354D-15FS4-7 meets industry standards.
7.What is the process for return or replacement of AP7354D-15FS4-7?
All AP7354D-15FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354D-15FS4-7, 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 AP7354D-15FS4-7 part is unused and in its original packaging.
Return procedure for AP7354D-15FS4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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