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Diodes Incorporated AP7354-185W5-7
- Part No.:
- AP7354-185W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7354-185W5-7.pdf
- Description:
- IC REG LINEAR 1.85V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,288
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Product details
Overview
AP7354-185W5-7 from Diodes Incorporated is a 150mA ultra-low quiescent current (0.25µA typical) fixed-output LDO regulator delivering 1.85V with ±1% accuracy over -40°C to +85°C, designed for battery-powered wearable electronics and IoT sensor modules using SOT25 package with enable control and no output discharge.
For engineers reviewing the AP7354-185W5-7 datasheet, AP7354-185W5-7 pinout, AP7354-185W5-7 application, or AP7354-185W5-7 equivalent, key selection criteria include dropout voltage at 150mA (0.32V 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 AP7354-185W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and enable input-enabling precise regulation of 1.85V output across 2.0V–5.5V input range. Its architecture supports stable operation with minimal external components: only 0.1µF CIN and COUT required.
It operates in active mode with 0.25µA quiescent current and enters standby at 0.02µA when EN is pulled low. The device lacks integrated output discharge (non-D variant), requiring external discharge path if needed, and features ESD protection exceeding 4kV HBM and 400V MM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85V ±1% at +25°C; ±2% over full temperature range - ensures stable core voltage for low-power MCUs and sensors. |
| Max Output Current | 150mA - sufficient to power BLE SoCs, image sensors, or multi-sensor nodes without thermal derating in SOT25. |
| Quiescent Current | 0.25µA typical - extends battery life in always-on wearables (e.g., fitness trackers operating >1 year on coin cell). |
| Dropout Voltage | 0.32V typical at 150mA - enables regulation from 2.17V input, supporting single-cell Li-ion or alkaline battery discharge down to ~2.0V. |
| Input Voltage Range | 2.0V to 5.5V - compatible with wide range of portable power sources including USB, boost converters, and multi-cell batteries. |
| Enable Thresholds | VEN(H) ≥ 1.0V, VEN(L) ≤ 0.4V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Resistance | θJA = 162°C/W (SOT25) - limits junction rise to <25°C at 150mA under typical PCB layout, avoiding thermal shutdown. |
Pinout & Package
SOT25 package (3.0mm × 2.8mm × 1.3mm), lead-free, RoHS-compliant, with matte 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 placed adjacent to pin to suppress supply noise and transient droop. |
| 2 | GND | Analog/digital ground reference; requires low-impedance connection to PCB ground plane to minimize PSRR degradation and output ripple. |
| 3 | VOUT | Regulated 1.85V output; connects directly to load; output capacitor must be placed within 2mm of this pin and GND for stability. |
| 4 | EN | Active-high enable; driven high (>1.0V) to activate regulator, low (<0.4V) to enter 0.02µA shutdown - must never float. |
| 5 | GND | Second ground terminal; internally tied to Pin 2 - improves thermal dissipation and reduces ground loop impedance in high-noise environments. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 0.25µA typical enables >1-year runtime in coin-cell-powered devices drawing average 1µA system current. |
| High Accuracy Output | ±1% at +25°C and ±2% over -40°C to +85°C ensures reliable operation of 1.8V I/O domains without margin overhead. |
| Wide Input Range | 2.0V–5.5V supports direct connection to USB ports, single-cell Li-ion (2.7–4.2V), or boosted alkaline supplies without pre-regulation. |
| Low Dropout | 0.32V typical at 150mA allows efficient operation near battery end-of-life, minimizing wasted energy as heat. |
| Robust Protection | 4kV HBM ESD rating and 400mA latch-up immunity ensure reliability in handheld assembly and field deployment environments. |
Applications
| Wearable Fitness Tracker | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous heart-rate monitoring using optical sensor and ARM Cortex-M0+ MCU powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 1.85V supply for MCU core, sensor interface, and BLE radio subsystem. Use Value: 0.25µA quiescent current extends battery life to 14 months at 10-second sampling interval, validated per DS39918 Rev. 5-2. |
Use Scenario: Battery-operated soil moisture/temperature node transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Stable 1.85V rail for ultra-low-power microcontroller and analog front-end ADC. Use Value: ±1% output accuracy maintains ADC reference integrity across temperature, eliminating calibration drift in field deployments. |
| Wireless Camera Module | Smart Medical Patch |
|
Use Scenario: Miniature HD camera module in security tag, powered by 3.7V Li-Po with step-down requirement to 1.85V for image signal processor. IC Role / Device Role / Timing Role: Low-noise post-regulator ensuring clean power for ISP digital core and MIPI interface. Use Value: 0.32V dropout enables >92% efficiency at 150mA load, reducing thermal load in sealed enclosure per thermal resistance spec (162°C/W). |
Use Scenario: Disposable ECG patch worn for 72-hour continuous monitoring, powered by thin-film lithium battery. IC Role / Device Role / Timing Role: Single-point regulated supply for analog front-end, low-power MCU, and Bluetooth LE transceiver. Use Value: EN pin control synchronizes power-on with electrode contact detection, cutting system standby current to 0.02µA during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-1802E/TO | 100mA max output, 1.8V fixed, 1.6µA IQ, TO-92 package | Limited to lower current; unsuitable for 150mA loads like image sensors or BLE radios | Select only for sub-100mA legacy designs where TO-92 mounting is mandatory. |
| TPS7A02185PDBVR | 200mA max, 1.85V fixed, 25nA IQ, SOT-23-5 package, integrated discharge | Lower IQ but higher cost; discharge function adds complexity if unused | Prefer when nanoampere IQ is critical and board space allows SOT-23-5; avoid if discharge is unnecessary. |
Compared with MCP1700-1802E/TO and TPS7A02185PDBVR, the AP7354-185W5-7 uniquely balances 150mA capability, 0.25µA quiescent current, SOT25 thermal performance, and absence of redundant discharge circuitry-making it optimal for cost-sensitive, medium-current wearable applications.
Availability
AP7354-185W5-7 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 consistent parametric performance.
Supply support for AP7354-185W5-7 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 ICs, with manufacturing certified to IATF 16949 and quality systems compliant with AEC-Q200 for automotive-grade components.
The AP7354 belongs to Diodes' ultra-low-IQ LDO family, engineered specifically for extended-battery-life applications in wearables, medical patches, and remote IoT endpoints where micropower efficiency and output precision are non-negotiable.
FAQ
What is the maximum allowable input voltage for AP7354-185W5-7?
The absolute maximum input voltage is 6.0V per DS39918 Rev. 5-2 Section 3. Absolute Maximum Ratings. Operation above 5.5V violates recommended conditions and risks permanent damage. For sustained use, VIN must remain between 2.0V and 5.5V, with derating applied above +40°C ambient per power dissipation formula (315mW base, minus 3.75mW/°C).
Does AP7354-185W5-7 include output discharge functionality?
No. AP7354-185W5-7 is the non-discharge variant (standard AP7354, not AP7354D). It lacks internal discharge FET between VOUT and GND. If rapid output discharge is required during shutdown, an external resistor or MOSFET must be added per application note guidance in DS39918 Section 10.
Can AP7354-185W5-7 operate with ceramic capacitors smaller than 0.1µF?
No. The datasheet specifies 0.1µF minimum for both CIN and COUT (Section 10, Application Information). Using smaller values risks instability, poor transient response, and potential oscillation-verified in load transient testing (DS39918 p.7). X5R/X7R dielectrics are recommended for stable capacitance across temperature.
Is the SOT25 package of AP7354-185W5-7 RoHS and halogen-free compliant?
Yes. Per DS39918 Rev. 5-2 Section 1, AP7354-185W5-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, and halogen/antimony-free ("Green" device), containing <900ppm bromine, <900ppm chlorine, and <1000ppm antimony compounds, verified per Diodes' quality definitions.
AP7354-185W5-7 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):
- 1.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.58V @ 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
AP7354-185W5-7 FAQ
1.How can I place an order for AP7354-185W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7354-185W5-7 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 AP7354-185W5-7 reliable?
The price and inventory of AP7354-185W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7354-185W5-7 is usually 5 days.
3.What payment methods are accepted for AP7354-185W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7354-185W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7354-185W5-7?
AP7354-185W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7354-185W5-7 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 AP7354-185W5-7?
For technical support, including AP7354-185W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7354-185W5-7 requirements.
6.How does Aetrix verify that AP7354-185W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7354-185W5-7 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 AP7354-185W5-7 meets industry standards.
7.What is the process for return or replacement of AP7354-185W5-7?
All AP7354-185W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7354-185W5-7, 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 AP7354-185W5-7 part is unused and in its original packaging.
Return procedure for AP7354-185W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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