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Diodes Incorporated AP7383-18FDC-7
- Part No.:
- AP7383-18FDC-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7383-18FDC-7.pdf
- Description:
- LDO CMOS LOWCURR U-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:1,673
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Product details
Overview
AP7383-18FDC-7 from Diodes Incorporated is a 1.8V fixed-output, 150mA ultra-low dropout (ULDO) linear regulator in U-DFN2020-6 (Type C) package. It operates across 3.5V–30V input range, delivers ±1% output voltage accuracy at 10mA load, features 360mV typical dropout at 50mA, and draws only 1.8µA ground current. It is designed for power management in space-constrained portable instrumentation and USB-powered devices.
For engineers reviewing the AP7383-18FDC-7 datasheet, AP7383-18FDC-7 pinout, AP7383-18FDC-7 application, or AP7383-18FDC-7 equivalent, key selection criteria include wide-input capability, thermal shutdown behavior, enable functionality, low-quiescent-current operation under light loads, and compatibility with 1µF ceramic output capacitors.
Technical Context
The AP7383-18FDC-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 1.8V output, current-limit circuit (150mA typ), and chip-enable logic. Its internal architecture supports stable regulation down to 3.5V input while maintaining 1.8V output-critical for battery-fed systems where input voltage sags near cutoff.
Thermal shutdown activates at +160°C with +20°C hysteresis, and the device uses a dedicated EN pin (logic-high ≥2.0V, logic-low ≤0.4V) for controlled power sequencing. The U-DFN2020-6 (Type C) package provides 152°C/W junction-to-ambient thermal resistance and supports reflow soldering per J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8V ±1% at 10mA - ensures stable core voltage for low-power microcontrollers and sensors. |
| Input Voltage Range | 3.5V to 30V - supports direct connection to 12V/24V rails or multi-cell Li-ion batteries without pre-regulation. |
| Dropout Voltage | 360mV typ @ 50mA - enables regulation when VIN drops to 2.16V, extending usable battery life. |
| Ground Current | 1.8µA typ @ IOUT = 0A - minimizes standby power loss in always-on monitoring circuits. |
| Current Limit | 150mA typ - protects downstream circuitry during short-circuit or overload conditions. |
| Line Regulation | 0.05%/V - maintains tight output stability despite input rail fluctuations (e.g., automotive load dump). |
| Load Regulation | 0.5% - limits output deviation from 1mA to 150mA load, suitable for variable-duty-cycle peripherals. |
| Thermal Shutdown | +160°C activation with +20°C hysteresis - prevents permanent damage during sustained high-power dissipation. |
Pinout & Package
AP7383-18FDC-7 is housed in a 2.0mm × 2.0mm × 0.6mm U-DFN2020-6 (Type C) package with wettable flank leads, NiPdAu plating, and exposed thermal pad (Pin 6). It is moisture-sensitive Level 1 per J-STD-020 and rated for −40°C to +125°C operating junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 30V DC with internal overvoltage protection. |
| 2 | GND | Analog/digital ground reference; must be connected to PCB ground plane for thermal and noise performance. |
| 3 | VOUT | Regulated 1.8V output; requires 1µF ceramic capacitor (X5R/X7R) placed within 3mm for stability. |
| 4 | NC | No internal connection; recommended to tie to GND to maximize thermal copper area on PCB. |
| 5 | NC | No internal connection; recommended to tie to GND to maximize thermal copper area on PCB. |
| 6 | EN | Active-high enable input; pulls output to high-impedance state when <0.4V; enables power sequencing control. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range | Supports 3.5V–30V input without external components-eliminates need for pre-regulators in industrial or automotive auxiliary rails. |
| Ultra-Low Quiescent Current | 1.8µA ground current at zero load enables >1-year battery life in coin-cell–powered IoT sensors. |
| Low-ESR Ceramic Cap Compatibility | Stable with 1µF X5R/X7R output capacitor-reduces BOM count and PCB footprint vs. tantalum alternatives. |
| Enable Control with Hysteresis | EN pin threshold (2.0V high / 0.4V low) provides noise-immune power-up sequencing for multi-rail systems. |
| Thermal Protection | Integrated +160°C shutdown with +20°C hysteresis prevents latch-up and enables safe recovery after overheating events. |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
Use Scenario: Continuous glucose monitor with BLE radio and low-power ADC running from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.8V LDO supplying sensor analog front-end and microcontroller core voltage. Use Value: 360mV dropout extends usable battery range by 12% compared to standard LDOs, and 1.8µA quiescent current enables >18-month shelf life. |
Use Scenario: Handheld oscilloscope module powered via USB 5V bus with internal 1.8V FPGA I/O bank supply. IC Role / Device Role / Timing Role: Post-regulator converting USB 5V to clean 1.8V for FPGA I/O and ADC reference. Use Value: 0.05%/V line regulation rejects USB port ripple, and thermal shutdown prevents damage during accidental short-circuit on probe interface. |
| Industrial Data Loggers | Smart Home Edge Nodes |
Use Scenario: Battery-backed environmental logger with RS-485 interface, operating across −25°C to +70°C ambient. IC Role / Device Role / Timing Role: Fixed 1.8V supply for microcontroller, EEPROM, and temperature/humidity sensor ICs. Use Value: ±100ppm/°C tempco ensures <±12mV output drift over full temperature range, preserving ADC accuracy. |
Use Scenario: Zigbee-enabled occupancy sensor using CR2032 coin cell and ultra-low-power MCU. IC Role / Device Role / Timing Role: Primary voltage regulator enabling deep-sleep mode with sub-2µA system current. Use Value: 1.8µA ground current directly determines minimum sleep current budget, allowing 5+ year battery life at 10-second wake intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1802E/MB | 1.8V, 250mA, 600mV dropout @ 250mA, 2.5µA IQ, SOT23-5 package | Higher dropout and larger package limit use in high-input-voltage, space-constrained designs | Prefer when higher output current is required and board space allows SOT23-5 footprint |
| Torex XC6219B182MR-G | 1.8V, 150mA, 250mV dropout @ 100mA, 1.0µA IQ, SOT25 package | Narrower 2.0V–6.0V input range excludes 12V/24V rail compatibility | Prefer when ultra-low IQ is critical and input stays below 6V (e.g., single-cell LiPo) |
Compared with MCP1703T-1802E/MB and XC6219B182MR-G, AP7383-18FDC-7 uniquely balances 30V input tolerance, 360mV dropout at 50mA, and 2.0mm² footprint-making it optimal for compact, wide-input industrial and portable systems where both headroom and size matter.
Availability
AP7383-18FDC-7 is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, and industrial data loggers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AP7383-18FDC-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, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The AP7383 series belongs to Diodes' high-reliability ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding precision, low quiescent current, and robust thermal protection.
FAQ
What is the minimum input voltage required for AP7383-18FDC-7 to regulate 1.8V output?
The AP7383-18FDC-7 requires a minimum input voltage of 3.5V to maintain regulation, as specified in Recommended Operating Conditions. At 50mA load, its typical dropout is 360mV, meaning it can sustain 1.8V output down to VIN = 2.16V-but guaranteed operation begins at 3.5V per datasheet limits. Below that, output may drop out of regulation or trigger undervoltage lockout behavior.
Can AP7383-18FDC-7 be used without an enable signal?
Yes. The EN pin is internally pulled up via a weak current source; leaving it unconnected results in default enabled operation. However, for reliable startup and noise immunity, Diodes recommends tying EN to VIN through a 100kΩ resistor or directly connecting it to a controlled logic signal. Floating EN is not advised in noisy environments due to potential false disabling.
Is the U-DFN2020-6 (Type C) package lead-free and RoHS compliant?
Yes. AP7383-18FDC-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, halogen-free, and antimony-free per Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb). The U-DFN2020-6 (Type C) package uses NiPdAu-plated copper lead-frame and meets JEDEC J-STD-020 Level 1 moisture sensitivity requirements.
What is the maximum power dissipation for AP7383-18FDC-7 in its U-DFN2020-6 package?
The absolute maximum power dissipation for AP7383-18FDC-7 in U-DFN2020-6 (Type C) is 658mW at +25°C ambient, based on θJA = 152°C/W. Derating is required above +25°C: power must decrease by 4.33mW/°C. At +85°C ambient, max continuous dissipation drops to ~390mW. Thermal pad soldering to a 1cm² copper pour improves real-world performance significantly.
AP7383-18FDC-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):
- 30V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- 3 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6 (Type C)
AP7383-18FDC-7 FAQ
1.How can I place an order for AP7383-18FDC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7383-18FDC-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 AP7383-18FDC-7 reliable?
The price and inventory of AP7383-18FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-18FDC-7 is usually 5 days.
3.What payment methods are accepted for AP7383-18FDC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-18FDC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7383-18FDC-7?
AP7383-18FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7383-18FDC-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 AP7383-18FDC-7?
For technical support, including AP7383-18FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-18FDC-7 requirements.
6.How does Aetrix verify that AP7383-18FDC-7 is sourced from the original manufacturer or authorized distributors?
All AP7383-18FDC-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 AP7383-18FDC-7 meets industry standards.
7.What is the process for return or replacement of AP7383-18FDC-7?
All AP7383-18FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-18FDC-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 AP7383-18FDC-7 part is unused and in its original packaging.
Return procedure for AP7383-18FDC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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