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Diodes Incorporated AP7354D-25FS4-7
- Part No.:
- AP7354D-25FS4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7354D-25FS4-7.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,349
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Product details
Overview
AP7354D-25FS4-7 from Diodes Incorporated is a 2.5V fixed-output, 150mA ultra-low quiescent current LDO regulator in X2-DFN1010-4 (Type B) package with integrated active output discharge, ±1% output accuracy over temperature, and 0.25µA quiescent current-designed for power management in compact wearable sensors and IoT edge nodes.
For engineers reviewing the AP7354D-25FS4-7 datasheet, AP7354D-25FS4-7 pinout, AP7354D-25FS4-7 application, or AP7354D-25FS4-7 equivalent, key selection criteria include ultra-low IQ for battery longevity, guaranteed 150mA output under 2.0–5.5V input, EN-controlled shutdown with 0.02µA standby, and discharge-enabled VOUT settling for system-level sequencing compliance.
Technical Context
The AP7354D-25FS4-7 integrates a precision voltage reference, error amplifier, current-limit protection, and enable-controlled pass transistor in a monolithic CMOS architecture. Its active output discharge circuit (35Ω typical) ensures rapid VOUT collapse during shutdown, critical for multi-rail sequencing in low-power microcontroller subsystems.
It operates across –40°C to +85°C ambient with dropout as low as 0.22V at 150mA (VOUT = 2.5V), supports 0.1µF ceramic input/output capacitors, and maintains ±1% output accuracy at 25°C and ±2% over full temperature range-enabling stable biasing of precision analog front-ends and RF transceivers.
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 external feedback network. |
| Max Output Current | 150mA continuous - sufficient to power ARM Cortex-M0+ MCUs, BLE SoCs, or MEMS sensor arrays with margin. |
| Quiescent Current | 0.25µA typical - extends coin-cell life beyond 5 years in always-on wake-on-motion applications. |
| Standby Current | 0.02µA when EN = low - enables deep-sleep modes in energy-harvesting nodes with zero-load leakage. |
| Dropout Voltage | 0.22V at 150mA (VOUT = 2.5V) - allows operation down to 2.72V input, compatible with single Li-SOCl₂ or two alkaline cells. |
| Input Voltage Range | 2.0V to 5.5V - supports direct connection to USB, Li-ion, or multi-cell battery rails without pre-regulation. |
| Active Discharge | Enabled (AP7354D variant); 35Ω typical resistance - eliminates hold-up time on VOUT, preventing latch-up in downstream logic during power-down. |
Pinout & Package
X2-DFN1010-4 (Type B) package: 1.0mm × 1.0mm, 0.65mm pitch, 0.39mm height, NiPdAu-plated copper terminals, moisture sensitivity level 1, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VOUT | Regulated 2.5V output; requires 0.1µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| Pin 2 | GND | Power ground reference; must connect directly to PCB ground plane to minimize impedance and avoid regulation error. |
| Pin 3 | EN | Active-high enable; driven high (>1.0V) to activate regulator, low (<0.4V) to enter shutdown with discharge enabled. |
| Pin 4 | VIN | Input supply (2.0–5.5V); requires local 0.1µF decoupling capacitor between VIN and GND to suppress supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.25µA enables >5-year battery life in 10µA average-current wearable devices. |
| Integrated active output discharge | 35Ω discharge path ensures VOUT falls within 100µs after EN deactivation-critical for I²C/SPI bus isolation during reset. |
| ±1% output accuracy at 25°C | Meets tight tolerance requirements for ADC reference buffers and RF synthesizer VCO tuning voltages. |
| Stable with 0.1µF ceramic capacitors | Eliminates need for bulk electrolytic capacitors, reducing board area by >30% in space-constrained modules. |
| Wide input range (2.0–5.5V) | Supports direct integration across primary/secondary battery chemistries without intermediate buck conversion. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 coin cell with 10-year target lifetime. IC Role / Device Role / Timing Role: Primary 2.5V supply for analog front-end and ultra-low-power MCU; regulates sensor bias and ADC reference. Use Value: 0.25µA IQ minimizes self-discharge; ±1% accuracy ensures <0.5% gain drift in biopotential amplifiers over temperature. |
Use Scenario: Battery-powered soil moisture/temperature node transmitting via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Stable 2.5V rail for precision ADC, RF transceiver, and microcontroller core during burst transmission. Use Value: Active discharge prevents floating VOUT during sleep, avoiding false wake events from residual charge on downstream logic inputs. |
| Smart Camera Module | Industrial Wireless Transmitter |
|
Use Scenario: Miniaturized USB-C camera with motion-triggered capture and onboard image processing. IC Role / Device Role / Timing Role: Dedicated 2.5V supply for image sensor analog block and ISP core voltage domain. Use Value: 0.22V dropout at 150mA allows operation from partially discharged 3.7V Li-ion (down to 2.72V), maximizing usable battery capacity. |
Use Scenario: DIN-rail mounted vibration sensor transmitting data via NB-IoT with 10-year battery warranty. IC Role / Device Role / Timing Role: Power source for MEMS accelerometer, signal conditioning op-amps, and cellular modem power sequencing. Use Value: EN-controlled shutdown + discharge ensures clean power-down sequence compliant with 3GPP TS 24.008 power-off timing requirements. |
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 | No active discharge; 1.6µA IQ; SOT23-3 package; 250mA rating | Lacks VOUT discharge; higher IQ reduces battery life in always-on sensors | Select only if discharge is unnecessary and higher output current is required. |
| Torex XC6210B252MR-G | 0.6µA IQ; no discharge; 150mA; SOT25-5 package; ±2% accuracy | Higher IQ and looser accuracy reduce precision in analog sensor chains | Choose only for cost-sensitive designs where 0.25µA IQ and ±1% are non-critical. |
Compared with MCP1700-2502E/TO and XC6210B252MR-G, AP7354D-25FS4-7 delivers the lowest quiescent current (0.25µA vs. ≥0.6µA), tightest output accuracy (±1% vs. ±2%), and unique active discharge-making it optimal for battery-critical, multi-rail IoT endpoints requiring deterministic power sequencing.
Availability
AP7354D-25FS4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply with long-term lifecycle assurance.
Supply support for AP7354D-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7354 series targets ultra-low-power portable electronics, delivering optimized trade-offs among quiescent current, accuracy, and package size for battery-constrained edge devices.
FAQ
What is the minimum input voltage required for AP7354D-25FS4-7 to maintain regulated 2.5V output at 150mA?
The minimum input voltage is 2.72V, calculated from the 0.22V typical dropout voltage at 150mA and 2.5V nominal output. At –40°C to +85°C, worst-case dropout is 0.48V, so VIN must be ≥2.98V for guaranteed regulation across temperature. Input below 2.0V is prohibited per absolute maximum ratings.
Can AP7354D-25FS4-7 be used without an external output capacitor?
No. An external 0.1µF ceramic capacitor is mandatory between VOUT and GND for stability and transient response. Omitting COUT causes oscillation and output voltage overshoot during load steps, as confirmed in the Application Information section. X5R/X7R dielectrics are recommended for minimal ESR variation over temperature.
How does the active output discharge function behave during EN deactivation?
When EN is pulled low, the internal 35Ω discharge FET connects VOUT to GND, collapsing output voltage within 100µs (typical) for a 0.1µF load. This prevents floating outputs that could cause undefined logic states in downstream digital circuits and meets IEC 61000-4-2 ESD immunity requirements for system-level robustness.
Is AP7354D-25FS4-7 qualified for automotive applications?
No. AP7354D-25FS4-7 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP7354Q series) with PPAP capability, IATF 16949 manufacturing, and extended temperature support (–40°C to +125°C). This part is rated for industrial temperature range only (–40°C to +85°C).
AP7354D-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 (Type B)
AP7354D-25FS4-7 FAQ
1.How can I place an order for AP7354D-25FS4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354D-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 AP7354D-25FS4-7 reliable?
The price and inventory of AP7354D-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 AP7354D-25FS4-7 is usually 5 days.
3.What payment methods are accepted for AP7354D-25FS4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354D-25FS4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354D-25FS4-7?
AP7354D-25FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354D-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 AP7354D-25FS4-7?
For technical support, including AP7354D-25FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354D-25FS4-7 requirements.
6.How does Aetrix verify that AP7354D-25FS4-7 is sourced from the original manufacturer or authorized distributors?
All AP7354D-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 AP7354D-25FS4-7 meets industry standards.
7.What is the process for return or replacement of AP7354D-25FS4-7?
All AP7354D-25FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354D-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 AP7354D-25FS4-7 part is unused and in its original packaging.
Return procedure for AP7354D-25FS4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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