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Diodes Incorporated AP7384-33Y-13
- Part No.:
- AP7384-33Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7384-33Y-13.pdf
- Description:
- IC REG LIN 3.3V SOT89 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:7,494
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Product details
Overview
AP7384-33Y-13 from Diodes Incorporated is a fixed-output 3.3V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained, battery-powered systems. It delivers up to 50mA output current with 500mV dropout at full load, 2.5µA quiescent current, ±2% output voltage accuracy, and operates across a 3.3V–40V input range - enabling direct connection to unregulated 12V/24V rails or multi-cell batteries in portable instrumentation.
For engineers reviewing the AP7384-33Y-13 datasheet, AP7384-33Y-13 pinout, AP7384-33Y-13 application, or AP7384-33Y-13 equivalent, key selection criteria include dropout performance at 50mA, thermal shutdown threshold (+160°C), compatibility with low-ESR ceramic capacitors, and SOT89 package thermal resistance (125°C/W) for passive cooling in sealed enclosures.
Technical Context
The AP7384-33Y-13 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.3V output, current-limit protection (50mA), chip-enable logic, and thermal shutdown circuitry. Its architecture supports stable regulation under fast load transients without requiring external compensation.
It achieves 0.05%/V line regulation and 0.5% load regulation over 1mA–50mA, with PSRR of 60dB at 1kHz. The device maintains ±100ppm/°C output voltage temperature coefficient across –40°C to +125°C junction temperature, ensuring consistent rail integrity in wide-temperature industrial deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures reliable powering of 3.3V microcontrollers and sensors without external feedback resistors. |
| Input Voltage Range | 3.3V to 40V - enables direct use with automotive 12V/24V systems, industrial power rails, and multi-cell Li-ion packs. |
| Max Output Current | 50mA - sufficient for low-power MCU cores, RF modules, and sensor signal chains in portable devices. |
| Dropout Voltage | 500mV @ 50mA - allows regulation down to VIN = 3.8V, maximizing battery runtime in 3-cell alkaline or LiFePO₄ applications. |
| Quiescent Current | 2.5µA @ zero load - minimizes standby power loss in always-on metering and IoT edge nodes. |
| Thermal Shutdown | +160°C with +20°C hysteresis - provides robust self-protection during sustained overload or poor PCB heatsinking. |
| PSRR | 60dB @ 1kHz - suppresses ripple from noisy DC-DC pre-regulators feeding sensitive analog circuits. |
Pinout & Package
SOT89-3 package: thermally enhanced 3-pin surface-mount package with exposed tab (pin 3) connected to VIN for improved heat dissipation; footprint compatible with JEDEC TO-243AA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 3.3V output - connects directly to load; requires ≥2.2µF low-ESR ceramic capacitor for stability. |
| 2 | GND | Analog ground reference - must be low-impedance, star-connected to minimize noise coupling into error amplifier. |
| 3 | VIN | Unregulated input - ties to exposed tab for thermal conduction; accepts up to 40V with internal overvoltage protection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.5µA at zero load - extends battery life in energy-harvesting and long-life utility meters. |
| Low-ESR capacitor compatibility | Stable with ≥2.2µF X5R/X7R ceramics - eliminates need for costly tantalum or aluminum electrolytic output caps. |
| High accuracy output | ±2% over temperature and line/load - avoids post-regulation LDO trimming in production test. |
| Integrated protection | Current limit (50mA), thermal shutdown (+160°C), and short-circuit safe operation - reduces BOM count vs discrete protection circuits. |
| Wide input range | 3.3V–40V operation - supports single-part logistics across 5V USB, 12V industrial, and 24V automotive subsystems. |
Applications
| Smart Utility Meters | Portable Medical Sensors |
|---|---|
|
Use Scenario: Powering metrology ICs, RTCs, and LoRaWAN transceivers in battery-operated electricity/water/gas meters with 10+ year field life. IC Role / Device Role / Timing Role: Primary 3.3V supply for precision ADC front-end and secure MCU, maintaining rail stability during RF burst transmission. Use Value: 2.5µA IQ and 500mV dropout extend AA/AAA battery life by >25% versus legacy LDOs; ±2% accuracy ensures consistent ADC reference scaling. |
Use Scenario: Regulating power for wearable ECG/SpO₂ sensors with intermittent Bluetooth LE connectivity and motion-triggered sampling. IC Role / Device Role / Timing Role: Low-noise 3.3V source for analog front-end and BLE SoC, rejecting switching noise from adjacent DC-DC converters. Use Value: 60dB PSRR at 1kHz prevents RF-induced baseline drift; SOT89 thermal resistance enables passive cooling in compact plastic housings. |
| Industrial Handheld Terminals | Automotive Cabin Sensors |
|
Use Scenario: Supplying 3.3V logic rails in ruggedized barcode scanners and inventory tablets operating across –20°C to +60°C ambient. IC Role / Device Role / Timing Role: Input-stage LDO after wide-input buck converter, providing clean power for touch controller and display interface. Use Value: 0.5% load regulation ensures consistent touchscreen response across battery discharge; +125°C max TJ rating supports extended high-temp operation. |
Use Scenario: Powering cabin air quality (CO₂/VOC) and occupancy sensors mounted near HVAC ducts in vehicles. IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3V from 5V or 12V vehicle bus, surviving load-dump transients via upstream protection. Use Value: 40V max input withstands ISO 7637-2 pulse 1/2/5a; ±100ppm/°C tempco guarantees sensor calibration stability across cabin temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7375-33Y-13 | Lower max input (24V), higher IQ (3.5µA), same 50mA output and 3.3V fixed output. | Not suitable for 24V+ industrial or automotive inputs; better for cost-sensitive 5V-rail designs. | Select when input never exceeds 24V and marginal IQ reduction is acceptable. |
| MCP1703T-3302E/MB | Higher dropout (600mV @ 250mA), higher IQ (2.5µA), 250mA output, SOT23-3 package. | Supports higher load current but requires larger input margin; less thermally robust than SOT89 at full load. | Select when >50mA output is required and board space permits larger thermal pad layout. |
Compared with AP7375-33Y-13 and MCP1703T-3302E/MB, the AP7384-33Y-13 uniquely balances 40V input tolerance, 500mV dropout at 50mA, and 2.5µA quiescent current in a thermally optimized SOT89 package - making it optimal for battery-backed industrial and automotive subsystems where input voltage headroom and standby efficiency are co-critical.
Availability
AP7384-33Y-13 is available at Aetrix Electronics and suitable for smart utility meters, portable medical sensors, and industrial handheld terminals requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AP7384-33Y-13 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 automotive markets.
The AP7384 series belongs to Diodes' ultra-low dropout linear regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding precision, low IQ, and robust thermal performance in compact packages.
FAQ
What is the minimum input voltage required for regulation at 3.3V output?
The AP7384-33Y-13 requires VIN ≥ VOUT + VDROP. With a typical dropout of 500mV at 50mA, the minimum functional input is 3.8V. At lighter loads (e.g., 1mA), dropout drops to ~100mV, allowing regulation down to ~3.4V - verified per Electrical Characteristics table on page 3 of DS40700 Rev. 3-3.
Can the AP7384-33Y-13 be used with ceramic output capacitors smaller than 2.2µF?
No. The datasheet specifies ≥2.2µF low-ESR ceramic capacitor (X5R/X7R) on the output for stability across all operating conditions. Using smaller values risks oscillation or poor transient response, as confirmed in Typical Applications Circuit and Stability section (page 3).
Does the AP7384-33Y-13 have an enable pin?
No. The AP7384-33Y-13 lacks a dedicated enable (EN) pin. It operates continuously when VIN is within specification. For controlled sequencing, external MOSFET gating on VIN or use of the pin-compatible AP7381 (which includes EN) is required - per Pin Descriptions table (page 2) and Ordering Information (page 6).
Is the SOT89 package lead-free and RoHS compliant?
Yes. The AP7384-33Y-13 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), as stated in Features section (page 1) and Notes 1–3 (page 1).
AP7384-33Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- 25 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-89-3
AP7384-33Y-13 FAQ
1.How can I place an order for AP7384-33Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7384-33Y-13 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 AP7384-33Y-13 reliable?
The price and inventory of AP7384-33Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7384-33Y-13 is usually 5 days.
3.What payment methods are accepted for AP7384-33Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7384-33Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7384-33Y-13?
AP7384-33Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7384-33Y-13 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 AP7384-33Y-13?
For technical support, including AP7384-33Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7384-33Y-13 requirements.
6.How does Aetrix verify that AP7384-33Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7384-33Y-13 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 AP7384-33Y-13 meets industry standards.
7.What is the process for return or replacement of AP7384-33Y-13?
All AP7384-33Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7384-33Y-13, 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 AP7384-33Y-13 part is unused and in its original packaging.
Return procedure for AP7384-33Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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