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Diodes Incorporated AP7354-25FS4-7
- Part No.:
- AP7354-25FS4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7354-25FS4-7.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
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Product details
Overview
AP7354-25FS4-7 from Diodes Incorporated is a fixed 2.5V, 150mA ultra-low quiescent current LDO regulator in X2-DFN1010-4 (Type B) package, featuring ±1% output voltage accuracy over temperature, 0.25µA typical quiescent current, and integrated enable control. It delivers stable power to low-power wearable sensors and IoT edge nodes where battery life extension is critical.
For engineers reviewing the AP7354-25FS4-7 datasheet, AP7354-25FS4-7 pinout, AP7354-25FS4-7 application, or AP7354-25FS4-7 equivalent, key selection criteria include dropout voltage at 150mA (0.22V typ), EN pin logic thresholds (0.4V low / 1.0V high), output discharge capability (enabled in AP7354D variant), and thermal resistance (295°C/W junction-to-ambient).
Technical Context
The AP7354-25FS4-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and active-high enable input. Its internal resistor network fixes the output at 2.5V, eliminating external feedback components.
It operates across 2.0V–5.5V input range with guaranteed 150mA output current and maintains regulation down to 0.22V dropout at full load. The device supports fast turn-on/turn-off response and includes ESD protection exceeding 4kV HBM and 400V MM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% at +25°C; ±2% over -40°C to +85°C - ensures stable MCU core or sensor bias without calibration. |
| Quiescent Current | 0.25µA typ - enables multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Dropout Voltage | 0.22V typ at 150mA - allows operation from partially discharged 3.0V Li-ion cells down to ~2.72V input. |
| Enable Thresholds | VEN(H) = 1.0V min, VEN(L) = 0.4V max - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Resistance | θJA = 295°C/W - requires minimal PCB copper area for thermal management in space-constrained wearables. |
| ESD Protection | 4kV HBM, 400V MM - meets IEC 61000-4-2 Level 2 for robustness in handheld assembly and field use. |
Pinout & Package
X2-DFN1010-4 (Type B) package: 1.0mm × 1.0mm footprint, 0.39mm height, NiPdAu-plated copper leads, moisture sensitivity level 1, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VOUT | Regulated 2.5V output - must connect directly to load with low-impedance path; decoupled by 0.1µF ceramic capacitor. |
| Pin 2 | GND | Power ground reference - requires low-inductance connection to PCB ground plane; center pad is not electrically connected. |
| Pin 3 | EN | Active-high enable - drives high (>1.0V) to activate regulator; pulled low (<0.4V) for shutdown mode (0.02µA standby). |
| Pin 4 | VIN | Input supply (2.0–5.5V) - requires local 0.1µF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.25µA typ enables >10-year battery life in 10µA average-load IoT sensors. |
| Integrated enable control | EN pin allows system-level power sequencing and dynamic sleep/wake control without external MOSFET. |
| High output accuracy | ±1% at +25°C ensures reliable ADC reference or RF transceiver bias without trimming. |
| Stable with small capacitors | Works with 0.1µF X5R/X7R ceramics - reduces BOM count and PCB area in miniaturized modules. |
| Robust thermal design | 295°C/W θJA permits operation up to +85°C ambient in sealed enclosures without heatsinking. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG signal acquisition powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 2.5V supply for analog front-end and low-power MCU. Use Value: 0.25µA quiescent current extends battery life to >3 years while maintaining ±1% rail stability during motion-induced load transients. |
Use Scenario: Battery-powered air quality sensor transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Power source for PM2.5 sensor, temperature/humidity IC, and BLE SoC during active measurement bursts. Use Value: 150mA peak current capability supports simultaneous sensor excitation and radio transmission; fast EN-controlled wake-up minimizes idle current. |
| Smart Camera Module | Industrial Wireless Transmitter |
|
Use Scenario: Miniature USB-C camera using single-cell Li-ion with tight board space. IC Role / Device Role / Timing Role: Clean 2.5V rail for image sensor analog core and ISP power domain. Use Value: Low dropout (0.22V) allows operation down to 2.72V input, maximizing usable battery capacity before cutoff. |
Use Scenario: DIN-rail mounted vibration sensor transmitting via LoRaWAN in factory settings. IC Role / Device Role / Timing Role: Regulated supply for MEMS accelerometer, microcontroller, and sub-GHz transceiver. Use Value: 4kV HBM ESD rating withstands industrial handling; -40°C to +85°C operation ensures reliability in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 2.5V fixed, 250mA, 1.6µA IQ, TO-92 package - higher quiescent current, larger footprint. | Lacks enable pin; unsuitable for dynamic power gating in duty-cycled systems. | Select when cost-sensitive designs prioritize availability over ultra-low IQ and require through-hole mounting. |
| Torex XC6206P252MR-G | 2.5V fixed, 250mA, 1µA IQ, SOT-23-3 - no enable pin, no output discharge option. | Single-supply operation only; cannot support controlled shutdown of downstream capacitance. | Choose for simple always-on applications where board space is constrained but enable functionality is unnecessary. |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, the AP7354-25FS4-7 uniquely combines 0.25µA IQ, active-high EN, and DFN1010 packaging - enabling longest battery life and smallest footprint in space- and energy-constrained edge devices.
Availability
AP7354-25FS4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and wireless communication modules requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for AP7354-25FS4-7 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, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
The AP7354 belongs to Diodes' ultra-low-IQ LDO family designed specifically for battery-powered portable and wearable electronics where extended runtime and miniature packaging are essential.
FAQ
What is the minimum input voltage required for AP7354-25FS4-7 to regulate 2.5V output at 150mA?
The minimum input voltage is 2.72V, calculated as VOUT + VDROP(max) = 2.5V + 0.22V (typical dropout at 150mA). Absolute minimum VIN per spec is 2.0V, but regulation fails below 2.72V under full load. Input must remain ≥2.72V for sustained 150mA output.
Does AP7354-25FS4-7 include output discharge functionality?
No - AP7354-25FS4-7 is the non-discharge version. Output discharge is only available in the AP7354D-25FS4-7 variant, which adds an internal NMOS switch between VOUT and GND activated during shutdown. This part requires external discharge circuitry if rapid VOUT decay is needed.
Can the EN pin be left floating during normal operation?
No - the EN pin must never be left floating. It must be actively driven high (≥1.0V) to enable regulation or low (≤0.4V) to enter shutdown. Floating EN causes undefined output state and potential shoot-through or oscillation due to internal comparator ambiguity.
What is the recommended PCB layout for optimal thermal performance?
Use a solid 10mm² copper pour connected to Pin 2 (GND) with ≥4 thermal vias (0.3mm diameter) to inner ground plane. Place 0.1µF input/output capacitors within 2mm of respective pins, and avoid routing high-current traces near EN. Do not connect the center pad - it is non-functional per datasheet.
AP7354-25FS4-7 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.48V @ 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
AP7354-25FS4-7 FAQ
1.How can I place an order for AP7354-25FS4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354-25FS4-7 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 AP7354-25FS4-7 reliable?
The price and inventory of AP7354-25FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7354-25FS4-7 is usually 5 days.
3.What payment methods are accepted for AP7354-25FS4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354-25FS4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354-25FS4-7?
AP7354-25FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354-25FS4-7 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 AP7354-25FS4-7?
For technical support, including AP7354-25FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354-25FS4-7 requirements.
6.How does Aetrix verify that AP7354-25FS4-7 is sourced from the original manufacturer or authorized distributors?
All AP7354-25FS4-7 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 AP7354-25FS4-7 meets industry standards.
7.What is the process for return or replacement of AP7354-25FS4-7?
All AP7354-25FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354-25FS4-7, 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 AP7354-25FS4-7 part is unused and in its original packaging.
Return procedure for AP7354-25FS4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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