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Diodes Incorporated AP7383-44WR-7
- Part No.:
- AP7383-44WR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7383-44WR-7.pdf
- Description:
- IC REG LIN 4.4V SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:4,533
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Product details
Overview
AP7383-44WR-7 from Diodes Incorporated is a fixed-output 4.4V, 150mA ultra-low dropout (ULDO) linear regulator in SOT25 (WR) package. It delivers ±1% output voltage accuracy over load/line/temperature, supports input voltages up to 30V, achieves 360mV dropout at 50mA, and draws only 1.8µA ground current at zero load - enabling long battery life in portable instrumentation and USB-powered devices.
For engineers reviewing the AP7383-44WR-7 datasheet, AP7383-44WR-7 pinout, AP7383-44WR-7 application, or AP7383-44WR-7 equivalent, key selection criteria include its 4.4V fixed output, 30V max input, thermal shutdown at +160°C, compatibility with 1µF ceramic capacitors, and enable-pin control in W5 variant (not present in WR package).
Technical Context
The AP7383-44WR-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 4.4V output, current-limit circuit (150mA), and thermal shutdown. Its architecture enables stable regulation under wide input variation (3.5–30V) while maintaining <0.5% load regulation and 0.05%/V line regulation.
No enable function is implemented in the WR package variant; pins 4 and 5 are NC (not connected internally). The device uses a PMOS pass transistor topology, delivering low quiescent current without compromising transient response - evidenced by <200µs recovery time in load-step tests.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.4V ±1% (ensures stable supply for 4.3–4.5V-tolerant logic or analog rails) |
| Input Voltage Range | 3.5V to 30V (supports direct connection to 24V industrial buses or multi-cell Li-ion packs) |
| Dropout Voltage | 360mV @ 50mA (enables regulation down to 4.76V input; critical for battery end-of-life operation) |
| Ground Current | 1.8µA @ IOUT = 0mA (minimizes standby power loss in always-on sensor nodes) |
| Thermal Shutdown | +160°C with 20°C hysteresis (prevents latch-up during sustained overload or poor PCB heatsinking) |
| Output Accuracy | ±1% over -40°C to +125°C junction temperature (meets tight tolerance requirements for ADC references) |
| Load Regulation | 0.5% (1mA–150mA) (maintains voltage stability across dynamic processor load states) |
Pinout & Package
SOT25 (WR package) - 5-pin surface-mount package with exposed pad for thermal dissipation; JEDEC MS-012 compliant; 166°C/W θJA on standard 2×2-inch JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 30V DC; requires 1µF ceramic input capacitor |
| 2 | GND | Analog/digital ground reference; must be tied to low-impedance PCB ground plane |
| 3 | VOUT | Regulated 4.4V output; drives load up to 150mA; requires 1µF ceramic output capacitor |
| 4 | NC | No internal connection; recommended to tie to GND for improved thermal conduction and EMI suppression |
| 5 | NC | No internal connection; recommended to tie to GND for improved thermal conduction and EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range | 3.5V–30V operation eliminates need for pre-regulation in 12V/24V systems |
| Ultra-Low Quiescent Current | 1.8µA ground current extends battery runtime in always-on IoT sensors |
| Ceramic Capacitor Compatible | Stable with 1µF X5R/X7R MLCCs - reduces BOM cost and PCB area vs. tantalum |
| High Output Accuracy | ±1% over full temperature/load range ensures reliable microcontroller core voltage margin |
| Thermal Protection | Auto-recovery shutdown at +160°C prevents damage during short-circuit or ambient overheating |
Applications
| Portable Medical Sensors | Industrial USB-Powered Modules |
|---|---|
Use Scenario: Wearable ECG monitor powered by single Li-ion cell (3.0–4.2V) with boost converter feeding 5V rail, where AP7383-44WR-7 provides clean 4.4V for analog front-end. IC Role / Device Role / Timing Role: Precision voltage regulator supplying bias voltage to instrumentation amplifiers and ADC reference inputs. Use Value: ±1% output accuracy and 0.5% load regulation ensure consistent signal chain gain calibration across battery discharge cycle. |
Use Scenario: DIN-rail mounted USB-C hub with isolated 24V auxiliary input powering internal logic via AP7383-44WR-7. IC Role / Device Role / Timing Role: Primary LDO converting unregulated 24V to stable 4.4V for USB PD controller and level-shifting logic. Use Value: 30V input rating allows direct connection to industrial 24V bus without external step-down, reducing component count. |
| Laptop Docking Station Peripherals | Handheld Test Equipment |
Use Scenario: USB-C docking station providing 4.4V to HDMI retimers and USB 3.0 redrivers when host supplies 5V or 20V PD. IC Role / Device Role / Timing Role: Local point-of-load regulator ensuring noise-free 4.4V supply for high-speed serial interface ICs. Use Value: Ultra-low 1.8µA quiescent current minimizes standby power draw when dock is connected but inactive. |
Use Scenario: Battery-operated multimeter with dual 3.7V Li-ion cells (7.4V nominal) using AP7383-44WR-7 to generate 4.4V for display driver and MCU. IC Role / Device Role / Timing Role: Main system regulator delivering precise 4.4V to mixed-signal SoC and LCD controller. Use Value: 360mV dropout at 50mA enables >50 hours of continuous operation before input drops below regulation threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-4402E/MB | 4.4V output, 250mA rating, 600mV dropout @ 250mA, 2.5µA IQ, SOT23-5 package | Higher current capability but larger dropout; no thermal shutdown hysteresis spec | Select when >150mA load or SOT23 footprint required; verify thermal performance at 250mA |
| TPS7A2044PDBVR | 4.4V output, 300mA rating, 175mV dropout @ 300mA, 6.5µA IQ, SOT23-5 package | Lower dropout and higher current, but 3.65V max input limits use with >3.65V sources | Select for ultra-low-dropout needs in ≤3.65V systems; not suitable for 12V/24V inputs |
Compared with MCP1703T-4402E/MB and TPS7A2044PDBVR, the AP7383-44WR-7 uniquely balances 30V input tolerance, 150mA capability, and sub-2µA quiescent current - making it optimal for battery-backed industrial sensors where wide VIN and ultra-low IQ are non-negotiable.
Availability
AP7383-44WR-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial USB-powered modules, and handheld test equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AP7383-44WR-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 design centers across Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.
The AP7383 series belongs to Diodes' precision linear regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding ultra-low IQ, high accuracy, and robust thermal protection.
FAQ
What is the maximum input voltage for AP7383-44WR-7?
The absolute maximum input voltage is 33V, but the recommended operating range is 3.5V to 30V per the datasheet. Operation above 30V risks exceeding safe power dissipation limits, especially at high ambient temperatures or without adequate PCB copper for heat spreading. Thermal shutdown activates at +160°C to prevent damage.
Does AP7383-44WR-7 have an enable pin?
No. The WR package variant has pins 4 and 5 marked "NC" (not connected internally). Unlike the W5 package (which includes EN functionality), the WR version is always-on after power application. For enable-controlled designs, select AP7383-44W5-7 instead.
Can AP7383-44WR-7 be used with ceramic output capacitors?
Yes - it is explicitly designed for stability with 1.0µF low-ESR ceramic capacitors (X5R/X7R), as confirmed in the Typical Applications Circuit and Features list. No series resistance or special capacitor types are required, simplifying layout and reducing BOM cost versus tantalum-based solutions.
What is the thermal resistance of the SOT25 (WR) package?
The SOT25 (WR) package has θJA = 166°C/W and θJC = 26°C/W on the JEDEC-standard 2×2-inch multi-layer board. This means a 150mA load at 30V input (2.325W dissipation) would raise junction temperature by ~385°C above ambient - confirming that practical use requires strict input voltage derating or enhanced PCB copper to avoid thermal shutdown.
AP7383-44WR-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):
- 30V
- Voltage - Output (Min/Fixed):
- 4.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- 3 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Current Limit, Thermal Shutdown
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7383-44WR-7 FAQ
1.How can I place an order for AP7383-44WR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7383-44WR-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 AP7383-44WR-7 reliable?
The price and inventory of AP7383-44WR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-44WR-7 is usually 5 days.
3.What payment methods are accepted for AP7383-44WR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-44WR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7383-44WR-7?
AP7383-44WR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7383-44WR-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 AP7383-44WR-7?
For technical support, including AP7383-44WR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-44WR-7 requirements.
6.How does Aetrix verify that AP7383-44WR-7 is sourced from the original manufacturer or authorized distributors?
All AP7383-44WR-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 AP7383-44WR-7 meets industry standards.
7.What is the process for return or replacement of AP7383-44WR-7?
All AP7383-44WR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-44WR-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 AP7383-44WR-7 part is unused and in its original packaging.
Return procedure for AP7383-44WR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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