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Diodes Incorporated AP7387-30W5-7
- Part No.:
- AP7387-30W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7387-30W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
AP7387-30W5-7 from Diodes Incorporated is a wide-input (5–60V), 3.0V fixed-output, 150mA ultra-low-dropout linear regulator in SOT25 package. It delivers ±2% output accuracy, 700mV dropout at 100mA, 2μA quiescent current, and 70dB PSRR at 1kHz-designed for battery-powered smoke detectors and EV battery management systems where input voltage varies widely and standby power must be minimized.
For engineers reviewing the AP7387-30W5-7 datasheet, AP7387-30W5-7 pinout, AP7387-30W5-7 application, or AP7387-30W5-7 equivalent, this page provides verified technical context, validated pin functions, real-world application constraints, and confirmed alternative parts with documented functional differences.
Technical Context
The AP7387-30W5-7 integrates a precision voltage reference, error amplifier, and thermal shutdown circuit with internal current limiting (250mA typical) and short-circuit protection. Its architecture supports fast line/load transient response due to high-loop-gain error amplification and low-output-impedance regulation.
It operates across –40°C to +125°C junction temperature with 150°C thermal shutdown threshold and +30°C hysteresis. The SOT25 package provides θJA = 150°C/W and θJC = 59.5°C/W, enabling stable 150mA operation under moderate PCB copper area and ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 60V - supports direct connection to 12V/24V/48V industrial and automotive battery rails without pre-regulation. |
| Output Voltage | 3.0V ±2% - tight tolerance ensures reliable powering of 3.3V-tolerant microcontrollers and sensors with margin. |
| Max Output Current | 150mA - sufficient for low-power MCU cores, analog sensors, and RF transceivers in portable equipment. |
| Dropout Voltage | 700mV @ 100mA - enables regulation down to VIN = 3.7V while maintaining 3.0V output, critical for Li-ion battery discharge. |
| Quiescent Current | 2μA typ. - extends battery life in always-on smoke detectors and remote sensors operating for years on coin cells. |
| PSRR | 70dB @ 1kHz - suppresses ripple from noisy DC-DC converters or alternator supplies in automotive BMS applications. |
| Thermal Shutdown | 150°C with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking in enclosed enclosures. |
Pinout & Package
SOT25 package: 5-pin surface-mount with exposed thermal pad (EP), 3.0mm × 2.8mm footprint, 1.6mm height, matte tin-plated leads, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; requires 1μF ceramic decoupling capacitor placed adjacent to pin for stability. |
| 2 | GND | Analog/digital ground reference; must connect directly to PCB ground plane and tie to EP for thermal conduction. |
| 3 | VOUT | Regulated 3.0V output; requires 10μF X7R/X5R ceramic capacitor placed within 2mm of pin for transient immunity. |
| 4 | NC | No internal connection; recommended to tie to GND to maximize thermal copper area on PCB. |
| 5 | EP | Exposed thermal pad; internally connected to GND; must be soldered to ≥100mm² copper pour for θJA ≤ 150°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range | 5–60V operation eliminates need for external buck pre-regulator in 24V/48V industrial sensor nodes. |
| Ultra-Low IQ | 2μA quiescent current enables >10-year battery life in smoke detectors using CR123A cells (1500mAh). |
| Fast Transient Response | Sub-200μs recovery from 10–100mA load steps minimizes VOUT undershoot in microcontroller wake-up events. |
| Integrated Protections | Current limit (250mA), thermal shutdown (150°C), and short-circuit protection reduce external component count and BOM cost. |
| High PSRR | 70dB at 1kHz rejects switching noise from adjacent DC-DC converters in compact multi-rail embedded systems. |
Applications
| Smoke Detector Power Supply | EV Battery Cell Monitor |
|---|---|
|
Use Scenario: Standby and alarm-mode power for photoelectric/ionization smoke sensors powered by CR123A or AA batteries. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying MCU, sensor interface, and audible alarm driver. Use Value: 2μA IQ extends battery life beyond 10 years in standby; 60V max input accommodates charger surge transients up to 50V. |
Use Scenario: Local regulation for cell-voltage monitoring ICs and isolation gate drivers in 400V–800V EV battery packs. IC Role / Device Role / Timing Role: Post-DC-DC local LDO providing clean 3.0V to analog front-end and CAN transceiver. Use Value: 70dB PSRR suppresses switching noise from isolated flyback supplies; 150mA output drives multiple monitoring channels. |
| Industrial Sensor Node | Home Appliance MCU Supply |
|
Use Scenario: Powering LoRaWAN or NB-IoT sensor modules in factory environments with 24V DC distribution rails. IC Role / Device Role / Timing Role: Input-tolerant LDO converting unregulated 24V to stable 3.0V for wireless SoC and environmental sensors. Use Value: 60V absolute max rating handles 40V load-dump transients; SOT25 thermal resistance supports 150mA at 60°C ambient. |
Use Scenario: Main 3.0V supply for control MCU, display driver, and touch controller in smart washing machines and ovens. IC Role / Device Role / Timing Role: Secondary LDO fed from 5V rail, delivering low-noise power to timing-critical digital logic. Use Value: ±2% output accuracy ensures reliable reset behavior; fast transient response prevents brownout during motor startup surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-IQ, wide-input LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-30W5-7 | Lower max input (42V), higher IQ (3.5μA), same 3.0V output and SOT25 package. | Lacks 60V surge tolerance; unsuitable for automotive load-dump or industrial 48V transients. | Select only if system VIN never exceeds 42V and 1.5μA IQ reduction is non-critical. |
| MCP1703T-3002E/MB | 45V max input, 2.5μA IQ, 3.0V output, SOT23-3 package, no thermal pad. | Lower thermal capability (θJA = 248.5°C/W); limited to ≤50mA continuous in same PCB layout. | Use only for space-constrained designs with <50mA loads and no thermal derating requirements. |
Compared with AP7387-30W5-7, AP7361-30W5-7 trades 18V input headroom for marginal IQ increase, while MCP1703T-3002E/MB sacrifices thermal performance and current capability for smaller footprint-neither matches the 60V/150mA/2μA combination in SOT25 with exposed pad.
Availability
AP7387-30W5-7 is available at Aetrix Electronics and suitable for battery-powered equipment, smoke detectors and sensors, and EV/HEV battery management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for AP7387-30W5-7 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 industrial, automotive, computing, and consumer markets.
The AP7387 product line targets high-reliability, wide-input LDO applications in safety-critical and long-life battery systems-emphasizing ultra-low IQ, robust protection, and extended voltage range over cost-optimized alternatives.
FAQ
What is the minimum input voltage required for AP7387-30W5-7 to regulate 3.0V output?
The minimum input voltage is 3.7V, calculated from the typical 700mV dropout at 100mA load. At full 150mA, dropout rises to 1100mV, requiring VIN ≥ 4.1V. Operation below these thresholds results in unregulated output and potential system reset.
Can AP7387-30W5-7 replace AP7387-33W5-7 in a 3.3V design?
No-AP7387-30W5-7 is factory-trimmed to 3.0V ±2% and cannot be adjusted. Substituting it for a 3.3V version risks under-voltage operation of 3.3V logic, causing communication errors or MCU lockup. Use only the designated 3.3V variant (AP7387-33W5-7) for 3.3V systems.
Is an external capacitor required on the NC pin of AP7387-30W5-7?
No capacitor is required on the NC pin. The datasheet explicitly states it is not connected internally and recommends tying it to GND to enhance thermal dissipation via additional PCB copper-no capacitance or filtering function is assigned to this terminal.
Does AP7387-30W5-7 support reverse-polarity input protection?
No-the device lacks integrated reverse-voltage protection. Applying negative voltage to VIN exceeds the –0.3V absolute maximum rating and may cause latch-up or permanent damage. An external series Schottky diode or ideal diode controller is required for reverse-polarity resilience.
AP7387-30W5-7 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):
- 60V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 4 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7387-30W5-7 FAQ
1.How can I place an order for AP7387-30W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7387-30W5-7 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 AP7387-30W5-7 reliable?
The price and inventory of AP7387-30W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7387-30W5-7 is usually 5 days.
3.What payment methods are accepted for AP7387-30W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7387-30W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7387-30W5-7?
AP7387-30W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7387-30W5-7 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 AP7387-30W5-7?
For technical support, including AP7387-30W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7387-30W5-7 requirements.
6.How does Aetrix verify that AP7387-30W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7387-30W5-7 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 AP7387-30W5-7 meets industry standards.
7.What is the process for return or replacement of AP7387-30W5-7?
All AP7387-30W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7387-30W5-7, 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 AP7387-30W5-7 part is unused and in its original packaging.
Return procedure for AP7387-30W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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