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Diodes Incorporated AP7387-30FDCR-7
- Part No.:
- AP7387-30FDCR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7387-30FDCR-7.pdf
- Description:
- LDO CMOS LowCurr U-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:5,985
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Product details
Overview
AP7387-30FDCR-7 from Diodes Incorporated is a 3.0V fixed-output, wide-input (5–60V), 150mA ultra-low-dropout linear regulator in U-DFN2020-6R (Type C) package. It delivers ±2% output voltage accuracy, 700mV dropout at 100mA, and 2μA quiescent current-enabling long-life operation in battery-powered smoke detectors and EV battery management systems.
For engineers reviewing the AP7387-30FDCR-7 datasheet, AP7387-30FDCR-7 pinout, AP7387-30FDCR-7 application, or AP7387-30FDCR-7 equivalent, key selection criteria include input voltage range up to 60V, thermal shutdown at +150°C, PSRR of 70dB @ 1kHz, and compatibility with 10μF ceramic output capacitors for transient stability.
Technical Context
The AP7387-30FDCR-7 integrates a precision voltage reference, error amplifier, and current-limit circuit with thermal shutdown and short-circuit protection. Its architecture supports fast line/load transient response due to internal compensation optimized for 10μF ceramic output capacitance.
It operates across –40°C to +125°C junction temperature with 48°C/W θJA in U-DFN2020-6R package, enabling high-power-density designs where thermal dissipation via exposed pad (internally connected to GND) is critical for reliability under sustained 150mA load.
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% - stable supply for 3.3V-tolerant microcontrollers and sensors requiring tight regulation. |
| Max Output Current | 150mA - sufficient for low-power MCU cores, RF transceivers, and analog sensor signal chains. |
| Dropout Voltage | 700mV @ 100mA (typ.) - enables regulation from 3.7V input (e.g., single Li-ion) down to 3.0V output. |
| Quiescent Current | 2μA (typ.) - extends battery life in always-on smoke detectors and remote IoT sensors. |
| PSRR | 70dB @ 1kHz - suppresses ripple from noisy DC-DC converters or alternator supplies in vehicle systems. |
| Thermal Shutdown | +150°C threshold with +30°C hysteresis - prevents latch-up during overload or poor PCB heatsinking. |
Pinout & Package
AP7387-30FDCR-7 uses the U-DFN2020-6R (Type C) package: 2.0mm × 2.0mm × 0.6mm body with 0.65mm pitch, exposed thermal pad (EP) internally tied to GND. Requires solder mask defined pads per Diodes' recommended layout (X=0.35mm, Y=0.525mm, X1=1.65mm, Y1=1.01mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input power terminal; accepts 5–60V; requires 1μF ceramic decoupling placed adjacent to pin. |
| 2,5 | GND | Ground reference for regulation and protection circuits; connects to EP for thermal conduction. |
| 3,4 | NC | No internal connection; recommended to tie to GND plane to enhance thermal dissipation and EMI shielding. |
| 6 | VOUT | Regulated 3.0V output; drives load up to 150mA; requires 10μF X7R/X5R ceramic capacitor within 2mm. |
| EP | Exposed Pad | Internally connected to GND; must be soldered to large copper area (≥25mm²) for θJA = 48°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 control systems. |
| Ultra-Low IQ | 2μA quiescent current enables >10-year battery life in smoke detectors using two AA cells (3V nominal). |
| High PSRR | 70dB @ 1kHz rejects switching noise from adjacent DC-DC converters in compact PCB layouts. |
| Fast Transient Response | Sub-200μs recovery from 10→100mA load steps ensures stable MCU clocking during burst-mode wireless transmission. |
| Integrated Protections | Current limit (250mA), thermal shutdown (+150°C), and short-circuit protection reduce external component count. |
Applications
| Smoke Detector Power Supply | EV Battery Cell Monitor |
|---|---|
|
Use Scenario: Primary regulated rail for electrochemical CO sensor and low-power MCU in residential smoke alarms. IC Role / Device Role / Timing Role: LDO regulator providing clean 3.0V to analog front-end and sleep-mode MCU core. Use Value: 2μA quiescent current extends alkaline battery life beyond UL 217 certification requirement of 10 years. |
Use Scenario: Local 3.0V supply for cell-voltage measurement ICs and isolation gate drivers in 400V EV battery packs. IC Role / Device Role / Timing Role: High-PSRR post-regulator rejecting ripple from 12V auxiliary supply derived from main traction battery. Use Value: 60V max input withstands load-dump transients up to 80V without external TVS clamping. |
| Industrial Sensor Node | Home Appliance Control Board |
|
Use Scenario: Powering LoRaWAN node with temperature/humidity sensor and SX1276 transceiver in factory monitoring. IC Role / Device Role / Timing Role: Low-noise 3.0V source for ADC reference and RF synthesizer VCO supply. Use Value: 70dB PSRR minimizes phase noise degradation in sub-GHz RF links operating near motor drives. |
Use Scenario: Standby power for microcontroller and real-time clock in smart washing machine control module. IC Role / Device Role / Timing Role: Always-on LDO maintaining RTC and wake-up logic during AC mains loss. Use Value: Dropout of 700mV at 100mA allows operation from 3.7V supercapacitor backup during brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7381-30W5-7 | SOT25 package (θJA = 150°C/W); same 3.0V/150mA spec but higher thermal resistance limits continuous 150mA output. | Better suited for space-constrained boards where U-DFN2020-6R footprint is unavailable; lower thermal performance requires derating above 85°C ambient. | Select when legacy SOT25 layout compatibility is required and peak load current remains ≤100mA. |
| MCP1703T-3002E/MB | Microchip part; 3.0V/250mA, 6μA IQ, 6V max input - lacks 60V input capability and automotive qualification. | Only viable in low-voltage (<6V) consumer applications; cannot replace AP7387-30FDCR-7 in 24V/48V industrial or automotive systems. | Consider only for cost-sensitive, non-automotive designs with VIN < 6V and no need for ultra-low IQ or high-VIN operation. |
Compared with AP7387-30FDCR-7, AP7381-30W5-7 trades thermal efficiency for package compatibility, while MCP1703T-3002E/MB sacrifices input voltage range and quiescent current for higher output current-neither matches the combination of 60V input, 2μA IQ, and 48°C/W thermal performance in a 2mm² footprint.
Availability
AP7387-30FDCR-7 is available at Aetrix Electronics and suitable for battery-powered equipment, smoke detectors and sensors, EV and HEV battery management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for AP7387-30FDCR-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 manufacturer specializing in discrete, analog, and mixed-signal devices for industrial, automotive, and consumer markets.
The AP7387 series belongs to Diodes' high-voltage LDO product line, engineered specifically for reliable regulation in harsh environments including automotive battery systems and industrial power supplies with wide input transients.
FAQ
What is the minimum input voltage required for regulation at 3.0V output?
The AP7387-30FDCR-7 requires VIN ≥ VOUT + VDROP. With typical dropout of 700mV at 100mA, minimum input is 3.7V. At 150mA, dropout rises to 1100mV, requiring ≥4.1V input for full-load regulation. Below these thresholds, output voltage drops linearly with input.
Can the NC pins (3 and 4) be left floating on the PCB?
No. Pins 3 and 4 are not internally connected but must be tied to GND on the PCB. This maximizes copper area for thermal dissipation and improves EMI immunity by reducing parasitic antenna effects-critical for stable operation in noisy automotive or industrial environments.
Is the exposed pad (EP) electrically isolated or connected internally?
The exposed pad is internally connected to GND. It must be soldered to a dedicated GND copper pour (minimum 25mm²) and thermally anchored with ≥4 thermal vias (0.3mm diameter) to inner ground planes. Failure to connect EP to GND degrades θJA from 48°C/W to >100°C/W and risks thermal shutdown.
Does AP7387-30FDCR-7 support ceramic output capacitors below 10μF?
No. The device is compensated for stability with ≥10μF X7R/X5R ceramic output capacitance. Using smaller values (e.g., 4.7μF) causes phase margin reduction and potential oscillation under load transients, as confirmed in DS44416 Rev.6 Figure 12–15 stability plots.
AP7387-30FDCR-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6 (Type C)
AP7387-30FDCR-7 FAQ
1.How can I place an order for AP7387-30FDCR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7387-30FDCR-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 AP7387-30FDCR-7 reliable?
The price and inventory of AP7387-30FDCR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7387-30FDCR-7 is usually 5 days.
3.What payment methods are accepted for AP7387-30FDCR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7387-30FDCR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7387-30FDCR-7?
AP7387-30FDCR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7387-30FDCR-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 AP7387-30FDCR-7?
For technical support, including AP7387-30FDCR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7387-30FDCR-7 requirements.
6.How does Aetrix verify that AP7387-30FDCR-7 is sourced from the original manufacturer or authorized distributors?
All AP7387-30FDCR-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 AP7387-30FDCR-7 meets industry standards.
7.What is the process for return or replacement of AP7387-30FDCR-7?
All AP7387-30FDCR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7387-30FDCR-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 AP7387-30FDCR-7 part is unused and in its original packaging.
Return procedure for AP7387-30FDCR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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