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Diodes Incorporated AP7383-36WR-7
- Part No.:
- AP7383-36WR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7383-36WR-7.pdf
- Description:
- IC REG LIN 3.6V SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:4,560
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Product details
Overview
AP7383-36WR-7 from Diodes Incorporated is a fixed-output 3.6V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained, battery-powered systems. It delivers up to 150mA output current with 500mV dropout at 50mA, ±1% output voltage accuracy, and only 1.8–3.0µA ground current across load. Its wide 3.5–30V input range and thermal shutdown make it suitable for USB peripherals and portable instrumentation.
For engineers reviewing the AP7383-36WR-7 datasheet, AP7383-36WR-7 pinout, AP7383-36WR-7 application, or AP7383-36WR-7 equivalent, key selection criteria include dropout performance at 150mA, EN pin logic thresholds (2.0V high / 0.4V low), thermal resistance (166°C/W in WR package), and compatibility with 1µF ceramic output capacitors.
Technical Context
The AP7383-36WR-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.6V output, current-limit protection (150mA typical), and enable control circuitry. Its architecture supports stable regulation under fast load transients while maintaining ultra-low quiescent current.
It operates across –40°C to +125°C junction temperature, features ±100ppm/°C output voltage temperature coefficient, and includes thermal shutdown activation at +160°C with +20°C hysteresis-ensuring robust operation in thermally demanding portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6V ±1% - ensures stable rail for 3.3V-tolerant microcontrollers and sensors |
| Input Voltage Range | 3.5V to 30V - supports direct connection to unregulated 12V/24V supplies or multi-cell batteries |
| Max Output Current | 150mA - sufficient for low-power MCU subsystems, display drivers, and sensor interfaces |
| Dropout Voltage | 360–580mV @ 50mA - enables regulation down to VIN = 4.16V, preserving battery runtime |
| Ground Current | 1.8–3.0µA @ IOUT = 0–150mA - minimizes standby power loss in always-on IoT nodes |
| Line Regulation | 0.05%/V - maintains tight output stability despite input ripple or battery sag |
| Thermal Shutdown | +160°C activation with +20°C hysteresis - prevents latch-up during sustained overload or poor PCB heatsinking |
Pinout & Package
SOT25 (WR package) - 5-pin surface-mount package with exposed pad for thermal enhancement; footprint compatible with JEDEC MS-012AC, 2.8mm × 2.9mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 30V DC with internal overvoltage protection |
| 2 | GND | Power ground reference; must be connected to low-impedance PCB plane for noise immunity |
| 3 | VOUT | Regulated 3.6V output; requires ≥1µF ceramic capacitor placed within 3mm for stability |
| 4 | NC | No-connect terminal; internally floating - tie to GND on PCB to improve thermal dissipation |
| 5 | EN | Active-high enable input; asserts regulator when ≥2.0V applied, disables below 0.4V for zero-IQ sleep mode |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range (3.5–30V) | Eliminates need for pre-regulation stages in industrial or automotive auxiliary power rails |
| Ultra-Low Quiescent Current (1.8–3.0µA) | Extends battery life in coin-cell or Li-ion powered devices operating >1 year in sleep mode |
| Low ESR Ceramic Cap Compatibility | Enables use of compact, high-reliability 0603/0805 MLCCs instead of bulkier tantalum or aluminum electrolytics |
| Thermal Shutdown with Hysteresis | Prevents thermal runaway during short-circuit events while allowing automatic recovery after cooling |
| ±1% Output Accuracy | Meets ADC reference and analog sensor biasing requirements without external trimming |
Applications
| USB-Powered Peripherals | Portable Medical Sensors |
|---|---|
Use Scenario: USB-C powered blood glucose meter with Bluetooth LE connectivity and OLED display. IC Role / Device Role / Timing Role: Primary 3.6V LDO supplying MCU, BLE SoC, and sensor interface; enabled only during measurement cycles. Use Value: 1.8µA quiescent current extends single AAA battery life beyond 18 months in standby; 500mV dropout preserves regulation down to 4.1V battery voltage. | Use Scenario: Handheld pulse oximeter using dual-wavelength photodiodes and analog front-end. IC Role / Device Role / Timing Role: Precision 3.6V rail for op-amp signal conditioning and ADC reference, isolated from digital switching noise. Use Value: ±1% output accuracy and 0.05%/V line regulation ensure <0.5% gain error across battery discharge; thermal shutdown protects during probe insertion faults. |
| Industrial Data Loggers | Smart Home Sensors |
Use Scenario: Battery-backed environmental logger (temp/humidity/pressure) deployed in remote locations. IC Role / Device Role / Timing Role: Always-on 3.6V supply for RTC, non-volatile memory, and wake-up controller; EN pin controlled by MCU GPIO. Use Value: 3.5V minimum input allows operation down to two alkaline cells (3.0V nominal); 150mA headroom supports brief GSM transmission bursts. | Use Scenario: Zigbee-enabled door/window contact sensor with magnetic reed switch and accelerometer. IC Role / Device Role / Timing Role: Low-noise 3.6V source for RF transceiver and motion detection circuitry; NC pin tied to GND for improved thermal margin. Use Value: SOT25-WR package's 166°C/W θJA enables reliable operation in sealed enclosures; ±100ppm/°C tempco avoids calibration drift across –25°C to +70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3602E/MB | Higher dropout (600mV @ 250mA), higher IQ (2.5µA), same 3.6V output and SOT23-5 pinout | Limited to ≤250mA; lacks thermal hysteresis (shuts down at +150°C, no auto-recovery) | Choose if higher output current needed and thermal recovery not required |
| TPS7A2036PDQNR | Lower dropout (175mV @ 300mA), lower IQ (0.4µA), but narrower input range (1.6–6.0V) | Not suitable for >6V inputs; requires external EN pull-up; smaller DQN package (1.4mm × 1.2mm) | Choose only for low-voltage battery systems (<4.2V) where minimal dropout is critical |
Compared with MCP1703T-3602E/MB and TPS7A2036PDQNR, the AP7383-36WR-7 uniquely balances wide-input capability (up to 30V), robust thermal protection with hysteresis, and ultra-low IQ - making it optimal for mixed-voltage industrial and portable designs where input sources vary widely and reliability under fault conditions is essential.
Availability
AP7383-36WR-7 is available at Aetrix Electronics and suitable for USB-powered peripherals, portable medical sensors, and industrial data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7383-36WR-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP7383 series belongs to Diodes' ULDO regulator product line, engineered specifically for battery-powered and wide-input applications where low quiescent current, thermal resilience, and ceramic-capacitor compatibility are mandatory design requirements.
FAQ
What is the minimum input voltage required for regulation at full 150mA load?
The AP7383-36WR-7 requires VIN ≥ VOUT + VDROP. At 150mA, typical dropout is 1.05V (max 1.5V per datasheet). Thus, minimum functional input is 3.6V + 1.05V = 4.65V. Operation below this causes output collapse; the device remains functional but cannot maintain regulation.
Can the NC pin (Pin 4) be left floating on the PCB?
No - Pin 4 is internally unconnected but must be soldered to GND on the PCB. This maximizes copper area beneath the package for thermal conduction, reducing θJA by up to 15°C/W and improving power handling under continuous 150mA load.
Does the AP7383-36WR-7 support reverse-polarity protection?
No - the device lacks integrated reverse-voltage protection. Applying negative voltage to VIN or VOUT can damage the IC. External protection (e.g., series Schottky diode or MOSFET-based circuit) is required in systems where polarity reversal is possible.
Is the EN pin 5V-tolerant when used with a 5V microcontroller GPIO?
Yes - the EN pin has absolute maximum rating of 33V and operates correctly with 5V logic levels. Its "high" threshold is 2.0V (min), so standard 3.3V or 5V CMOS outputs fully satisfy enable conditions without level-shifting.
AP7383-36WR-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):
- 3.6V
- 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
AP7383-36WR-7 FAQ
1.How can I place an order for AP7383-36WR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7383-36WR-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 AP7383-36WR-7 reliable?
The price and inventory of AP7383-36WR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-36WR-7 is usually 5 days.
3.What payment methods are accepted for AP7383-36WR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-36WR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7383-36WR-7?
AP7383-36WR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7383-36WR-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 AP7383-36WR-7?
For technical support, including AP7383-36WR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-36WR-7 requirements.
6.How does Aetrix verify that AP7383-36WR-7 is sourced from the original manufacturer or authorized distributors?
All AP7383-36WR-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 AP7383-36WR-7 meets industry standards.
7.What is the process for return or replacement of AP7383-36WR-7?
All AP7383-36WR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-36WR-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 AP7383-36WR-7 part is unused and in its original packaging.
Return procedure for AP7383-36WR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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