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Diodes Incorporated AP7384-28V-A
- Part No.:
- AP7384-28V-A
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
AP7384-28V-A.pdf
- Description:
- IC REG LIN 2.8V TO92 AMMO 2K
- Quantity:
- Payment:
- Shipping:
Inventory:4,822
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Product details
Overview
AP7384-28V-A from Diodes Incorporated is a fixed-output 2.8V 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% output voltage accuracy over temperature and line/load, and only 2.5µA ground current at zero load - enabling multi-year operation in energy-sensitive portable devices.
For engineers reviewing the AP7384-28V-A datasheet, AP7384-28V-A pinout, AP7384-28V-A application, or AP7384-28V-A equivalent, key selection criteria include its 3.3–40V wide input range, thermal shutdown and short-circuit protection, compatibility with low-ESR ceramic capacitors, and TO92 (Ammo Packing) package suitability for cost-sensitive, low-volume industrial metering designs.
Technical Context
The AP7384-28V-A integrates a precision voltage reference, error amplifier, resistor feedback network, current-limit circuit, and enable-controlled pass transistor in a monolithic CMOS process. Its architecture supports stable regulation down to 2.8V output with minimal headroom, leveraging low-quiescent-current biasing to maintain efficiency across 1mA–50mA loads.
Thermal shutdown activates at +160°C with +20°C hysteresis, and short-circuit protection limits output current to 50mA under fault conditions. Line regulation is 0.05%/V and load regulation is 0.5% over full operating current, ensuring consistent voltage delivery despite input or load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% (ensures reliable MCU core or sensor biasing without external resistors) |
| Input Voltage Range | 3.3V to 40V (supports direct connection to 12V/24V rails or multi-cell Li-ion stacks) |
| Max Output Current | 50mA (sufficient for low-power microcontrollers, RTCs, and analog sensors) |
| Dropout Voltage | 500mV @ 50mA (enables regulation from 3.3V input to 2.8V output with margin) |
| Ground Current | 2.5µA @ IOUT = 0mA (minimizes standby power loss in always-on metering applications) |
| PSRR | 60dB @ 1kHz (suppresses ripple from noisy DC-DC converters upstream) |
| Thermal Shutdown | Activates at +160°C with +20°C hysteresis (prevents permanent damage during sustained overload) |
Pinout & Package
AP7384-28V-A is supplied in TO92 (Ammo Packing) - a through-hole, three-terminal plastic package with 2000-unit ammo pack quantity. Its compact 4.3–4.7mm body height and 2.54mm lead pitch support manual assembly and legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply connection | Accepts 3.3–40V unregulated input; requires ≥1µF ceramic input capacitor for stability |
| GND (Pin 2) | Power ground reference | Common return path for input, output, and internal circuitry; must be low-impedance |
| VOUT (Pin 3) | Regulated output terminal | Delivers stable 2.8V ±2%; requires ≥2.2µF ceramic output capacitor for transient response |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | Supports 3.3–40V inputs - eliminates need for pre-regulation in industrial 12V/24V systems |
| Ultra-low quiescent current | 2.5µA ground current at no load - extends battery life in e-meter sleep modes |
| Ceramic capacitor compatible | Stable with ≥2.2µF X5R/X7R output cap - reduces BOM count vs. tantalum-dependent regulators |
| Integrated protection | Thermal shutdown + current limiting - enables robust operation without external fault management |
| High accuracy output | ±2% VOUT tolerance over -40°C to +125°C - ensures reliable logic-level compliance for 3.3V/2.8V I/O |
Applications
| Smart Utility Meters | Portable Medical Sensors |
|---|---|
|
Use Scenario: Battery-powered electricity/water/gas meters with 10+ year field lifetime requirements. IC Role / Device Role / Timing Role: Primary 2.8V supply for metrology ADC, real-time clock, and RF transceiver. Use Value: 2.5µA ground current and 500mV dropout extend primary lithium thionyl chloride cell life beyond 12 years. |
Use Scenario: Handheld pulse oximeters and glucose monitors powered by single AAA alkaline cells. IC Role / Device Role / Timing Role: Low-noise 2.8V rail for analog front-end and BLE SoC during active measurement cycles. Use Value: 60dB PSRR suppresses switching noise from on-board DC-DC converters, preserving ADC SNR. |
| Laptop Peripheral Modules | Industrial Control I/O Boards |
|
Use Scenario: USB-powered docking accessories requiring independent 2.8V bias for display interface ICs. IC Role / Device Role / Timing Role: Post-regulator stepping down 5V USB VBUS to clean 2.8V for LVDS transmitter bias. Use Value: ±2% output accuracy ensures stable common-mode voltage for differential signaling integrity. |
Use Scenario: DIN-rail mounted PLC I/O modules powered from 24V DC industrial bus. IC Role / Device Role / Timing Role: Local 2.8V supply for isolated CAN transceiver and optocoupler drivers. Use Value: 40V absolute max input rating tolerates 24V bus transients up to 40V without external clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/TT | 250mV dropout @ 250mA, but only 6V max input; 1.6µA IQ | Limited to low-voltage battery systems (≤6V); unsuitable for 12V/24V industrial rails | Select when ultra-low IQ dominates and input never exceeds 6V |
| AP7361C-28YG-13 | Same 2.8V output, but SOT23-5 package with enable pin; 300mV dropout @ 300mA | Requires PCB redesign for 5-pin footprint and adds control logic; higher current capability | Select when system requires remote ON/OFF control and >50mA load headroom |
Compared with MCP1700T-2802E/TT and AP7361C-28YG-13, AP7384-28V-A uniquely balances 40V input tolerance, TO92 through-hole compatibility, and sub-3µA quiescent current - making it optimal for cost-sensitive, high-reliability metering where board space and long-term supply stability are critical.
Availability
AP7384-28V-A is available at Aetrix Electronics and suitable for smart utility meters, portable medical sensors, and industrial I/O boards requiring stable component supply with long lifecycle assurance and RoHS-compliant through-hole packaging.
Supply support for AP7384-28V-A 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 AP7384 series belongs to Diodes' ULDO linear regulator product line, engineered specifically for battery-powered and energy-harvesting applications demanding ultra-low IQ, wide VIN range, and robust fault protection in compact packages.
FAQ
What is the minimum input voltage required for AP7384-28V-A to regulate 2.8V output?
The AP7384-28V-A requires a minimum input voltage of 3.3V to maintain regulation, as specified in Recommended Operating Conditions. At 50mA load, the 500mV dropout means VIN must be ≥3.3V to sustain 2.8V output; operation below this threshold results in unregulated pass-through behavior.
Can AP7384-28V-A be used with aluminum electrolytic output capacitors?
No - the AP7384-28V-A is optimized for low-ESR ceramic capacitors (≥2.2µF X5R/X7R). Aluminum electrolytics typically exhibit ESR >100mΩ and capacitance drift, which can cause instability, overshoot, or oscillation per the datasheet's stability criteria and typical application circuit requirements.
Does AP7384-28V-A include an enable pin?
No - AP7384-28V-A has no enable (EN) pin. It operates continuously when VIN is within specification. For applications requiring controlled startup or standby mode, external MOSFET-based input switching or a regulator with integrated enable (e.g., AP7361C-28YG-13) must be used instead.
Is AP7384-28V-A qualified for automotive applications?
AP7384-28V-A is not AEC-Q100 qualified. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to the standard AP7384-28V-A in TO92 packaging. Use only in industrial or consumer applications unless explicitly certified.
AP7384-28V-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.8V
- 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:
- Through Hole
- Supplier Device Package:
- TO-92
AP7384-28V-A FAQ
1.How can I place an order for AP7384-28V-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7384-28V-A 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 AP7384-28V-A reliable?
The price and inventory of AP7384-28V-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7384-28V-A is usually 5 days.
3.What payment methods are accepted for AP7384-28V-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7384-28V-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7384-28V-A?
AP7384-28V-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7384-28V-A 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 AP7384-28V-A?
For technical support, including AP7384-28V-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7384-28V-A requirements.
6.How does Aetrix verify that AP7384-28V-A is sourced from the original manufacturer or authorized distributors?
All AP7384-28V-A 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 AP7384-28V-A meets industry standards.
7.What is the process for return or replacement of AP7384-28V-A?
All AP7384-28V-A units undergo pre-shipment inspection (PSI). If there is an issue with AP7384-28V-A, 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 AP7384-28V-A part is unused and in its original packaging.
Return procedure for AP7384-28V-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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