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Diodes Incorporated AP7354-33W5-7
- Part No.:
- AP7354-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7354-33W5-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:50,132
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Product details
Overview
AP7354-33W5-7 from Diodes Incorporated is a fixed 3.3V, 150mA ultra-low quiescent current LDO regulator in SOT25 package, featuring ±1% output accuracy, 0.25µA quiescent current, and enable-controlled shutdown-designed for power management in battery-constrained wearable sensors and IoT edge nodes.
For engineers reviewing the AP7354-33W5-7 datasheet, AP7354-33W5-7 pinout, AP7354-33W5-7 application, or AP7354-33W5-7 equivalent, key selection criteria include dropout voltage at 150mA (0.16V typ), EN logic thresholds (0.4V low / 1.0V high), thermal resistance (162°C/W), and compatibility with 0.1µF ceramic input/output capacitors.
Technical Context
The AP7354-33W5-7 integrates a precision voltage reference, error amplifier, current-limit protection, and active enable control-enabling precise regulation across 2.0V–5.5V input range while maintaining 3.3V ±1% output under load variations from 1mA to 150mA.
Its internal architecture supports fast turn-on/turn-off response (typ. 10µs), output discharge capability (via internal NMOS switch in SOT25 variant), and stability with minimal external components-requiring only 0.1µF X5R/X7R ceramic CIN and COUT placed adjacent to VIN/VOUT/GND pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% at +25°C; ±2% over -40°C to +85°C - ensures stable MCU core or sensor rail without external feedback. |
| Max Output Current | 150mA - sufficient to power BLE SoCs, low-power image sensors, or multi-node sensor hubs. |
| Quiescent Current | 0.25µA typ - extends battery life in always-on wearables beyond 1 year on coin-cell sources. |
| Dropout Voltage | 0.16V typ at 150mA - enables operation down to 3.46V input, critical for single-cell Li-ion or Li-poly systems. |
| Enable Thresholds | VEN(H) ≥ 1.0V, VEN(L) ≤ 0.4V - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Resistance | θJA = 162°C/W (SOT25) - limits junction rise to <26°C at 150mA in still air, avoiding thermal shutdown. |
| ESD Rating | 4kV HBM - robust enough for handling during manual PCB assembly and field-replaceable modules. |
Pinout & Package
SOT25 package: 5-pin surface-mount plastic package (3.0mm × 2.8mm × 1.3mm), lead-free, RoHS-compliant, with tin-plated leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; must be decoupled with 0.1µF ceramic capacitor within 2mm of pin. |
| 2 | GND | Analog/digital ground reference; requires low-impedance connection to PCB ground plane. |
| 3 | VOUT | Regulated 3.3V output; connects directly to load; output discharge path enabled when EN = low. |
| 4 | EN | Active-high enable; drives regulator ON when ≥1.0V, places device in 0.02µA standby when ≤0.4V. |
| 5 | GND | Second ground terminal; electrically tied to Pin 2 internally-must be connected to same ground net. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 0.25µA typical enables >1-year runtime on CR2032 in always-listening sensor nodes. |
| Output Discharge | Integrated NMOS discharge path (35Ω typ) clears VOUT rapidly after shutdown-prevents back-powering of upstream circuitry. |
| Input Voltage Range | 2.0V–5.5V supports direct connection to single-cell Li-ion (3.0–4.2V), USB VBUS (4.75–5.25V), or boosted coin-cell rails. |
| Stability with Small Capacitors | Guaranteed stable with 0.1µF ceramic COUT-eliminates need for bulk capacitance and saves board space in compact wearables. |
| High Accuracy Over Temp | ±2% output tolerance across -40°C to +85°C ensures reliable ADC reference or RF transceiver biasing in outdoor deployments. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 battery with Bluetooth LE transmission every 5 minutes. IC Role / Device Role / Timing Role: Primary 3.3V supply for analog front-end, microcontroller, and BLE radio-regulated from declining battery voltage. Use Value: 0.25µA quiescent current extends battery life to 14+ months; 0.16V dropout maintains regulation until battery reaches 3.46V. |
Use Scenario: Battery-powered soil moisture/temperature node deployed in agricultural fields for 2+ years without maintenance. IC Role / Device Role / Timing Role: Power source for ultra-low-power MCU, capacitive sensor IC, and sub-GHz RF transceiver during wake-up bursts. Use Value: Output discharge prevents leakage through sensor bias networks during sleep; ±1% accuracy ensures consistent ADC reference calibration. |
| Smart Camera Module | Industrial Wireless Transmitter |
Use Scenario: Miniature HD camera module in AR glasses requiring silent, thermally constrained power delivery. IC Role / Device Role / Timing Role: Clean 3.3V rail for image sensor and ISP-rejecting noise from digital switching and RF sections. Use Value: Low ESR stability with 0.1µF ceramic caps minimizes layout area; 162°C/W θJA avoids thermal derating in sealed enclosures. |
Use Scenario: DIN-rail mounted vibration sensor transmitting data via LoRaWAN using primary alkaline AA cells. IC Role / Device Role / Timing Role: Regulated supply for MEMS accelerometer, low-power MCU, and LoRa transceiver during periodic 100ms transmit windows. Use Value: EN pin allows MCU to gate power to RF section-reducing system-wide standby current to <1µA; 4kV HBM withstands industrial ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 3.3V fixed, 250mA, 1.6µA IQ, TO-92 package - higher quiescent current, through-hole mounting. | Lacks enable pin and output discharge; unsuitable for dynamic power gating or fast VOUT ramp-down. | Select when cost-sensitive prototyping favors through-hole assembly and 1.6µA IQ is acceptable. |
| Torex XC6206P332MR-G | 3.3V fixed, 250mA, 1µA IQ, SOT23-3 - no enable pin, no discharge, smaller footprint but lower current limit margin. | Cannot support active shutdown sequencing; limited thermal margin above 100mA due to SOT23-3 package. | Choose for space-constrained designs where enable control and 150mA sustained load are not required. |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, the AP7354-33W5-7 uniquely combines ultra-low 0.25µA quiescent current, integrated enable, output discharge, and 150mA capability in a thermally optimized SOT25 package-making it the only option meeting all four requirements simultaneously for next-gen battery IoT endpoints.
Availability
AP7354-33W5-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and wireless communication modules requiring stable component supply, long-term manufacturability, and guaranteed RoHS/Green compliance.
Supply support for AP7354-33W5-7 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 design centers across Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.
The AP7354 belongs to Diodes' ultra-low-IQ LDO family, engineered specifically for extended-battery-life applications in portable medical, consumer wearables, and industrial IoT edge devices.
FAQ
What is the minimum input voltage required for AP7354-33W5-7 to maintain regulation at full 150mA load?
The minimum input voltage is calculated as VOUT + VDROP = 3.3V + 0.35V = 3.65V (max dropout at 150mA per datasheet). At typical conditions, 3.46V suffices. Operation below 3.46V risks output droop or dropout, especially at elevated temperatures or with aging batteries.
Does AP7354-33W5-7 require an external pull-up resistor on the EN pin?
No external pull-up is required. The EN pin has no internal pull-up; however, it must never float. If always-enabled operation is needed, connect EN directly to VIN. For controlled enable, drive with a clean CMOS signal meeting VEN(H) ≥ 1.0V and VEN(L) ≤ 0.4V thresholds.
Can AP7354-33W5-7 be used with aluminum polymer or tantalum output capacitors?
Only ceramic capacitors (X5R/X7R, 0.1µF) are validated for stability per datasheet. Aluminum polymer or tantalum caps introduce ESR and ESL that may cause oscillation or poor transient response-especially during load steps up to 150mA. Ceramic remains mandatory for guaranteed performance.
Is the SOT25 package of AP7354-33W5-7 pin-compatible with other Diodes LDOs like AP2112K-3.3?
No. AP7354-33W5-7 uses a 5-pin SOT25 layout (VIN-GND-VOUT-EN-GND), whereas AP2112K-3.3 uses a 6-pin SOT26 (VIN-EN-GND-VOUT-NC-NC). Pin functions, count, and spacing differ-requiring separate PCB footprints and layout validation.
AP7354-33W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 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:
- SOT-25
AP7354-33W5-7 FAQ
1.How can I place an order for AP7354-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354-33W5-7 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 AP7354-33W5-7 reliable?
The price and inventory of AP7354-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7354-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP7354-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354-33W5-7?
AP7354-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354-33W5-7 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 AP7354-33W5-7?
For technical support, including AP7354-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354-33W5-7 requirements.
6.How does Aetrix verify that AP7354-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7354-33W5-7 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 AP7354-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP7354-33W5-7?
All AP7354-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354-33W5-7, 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 AP7354-33W5-7 part is unused and in its original packaging.
Return procedure for AP7354-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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