My Inquiry
My Account
Diodes Incorporated AP7384-28SA-7
- Part No.:
- AP7384-28SA-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7384-28SA-7.pdf
- Description:
- IC REG LIN 2.8V SOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7384-28SA-7 from Diodes Incorporated is a fixed-output 2.8V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained portable and 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 regulation from unregulated 12V/24V rails or multi-cell batteries in metering and handheld devices.
For engineers reviewing the AP7384-28SA-7 datasheet, AP7384-28SA-7 pinout, AP7384-28SA-7 application, or AP7384-28SA-7 equivalent, key selection criteria include dropout performance at 50mA, thermal shutdown threshold (+160°C), compatibility with low-ESR ceramic capacitors, and SOT23 package footprint suitability for high-density PCB layouts.
Technical Context
The AP7384-28SA-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 2.8V output, current-limit protection (50mA), chip enable logic, and thermal shutdown circuitry. Its architecture supports stable operation with 1µF input and 2.2µF output ceramic capacitors without requiring ESR tuning.
It achieves ±0.5% load regulation (1–50mA) and 0.05%/V line regulation over 3.3V–40V input, with PSRR of 60dB at 1kHz. The device maintains ±100ppm/°C output voltage temperature coefficient across –40°C to +125°C junction range, ensuring stability in wide-temperature industrial deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% - ensures compatible biasing for 2.8V logic, RF front-end ICs, and low-voltage microcontrollers. |
| Max Input Voltage | 40V - allows direct regulation from automotive 12V/24V systems or industrial power rails without pre-regulation. |
| Dropout Voltage | 500mV @ 50mA - enables >90% efficiency at 3.3V input, critical for single-cell Li-ion (3.0–4.2V) operation. |
| Quiescent Current | 2.5µA @ zero load - extends battery life in always-on metering and sensor nodes with infrequent wake-up cycles. |
| Thermal Shutdown | +160°C with +20°C hysteresis - provides robust over-temperature protection during sustained 50mA loads in enclosed enclosures. |
| PSRR | 60dB @ 1kHz - suppresses ripple from noisy DC-DC converters feeding the LDO input, preserving analog sensor signal integrity. |
| ESD Rating | HBM 4000V, CDM 2000V - meets IEC 61000-4-2 Level 4 requirements for robustness in handling and assembly environments. |
Pinout & Package
AP7384-28SA-7 is housed in a RoHS-compliant, lead-free SOT23-3 package (2.9mm × 1.3mm × 1.0mm), optimized for automated placement and thermal dissipation in compact designs. Pin assignment follows standard SOT23 top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 3.3V–40V unregulated input; requires ≥1µF ceramic capacitor close to pin for stability. |
| 2 (VOUT) | Regulated output node | Delivers fixed 2.8V ±2%; requires ≥2.2µF low-ESR ceramic capacitor for transient response and loop stability. |
| 3 (GND) | Power ground reference | Common return path for input/output currents; must be connected to low-impedance PCB ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (3.3V–40V) | Eliminates need for external pre-regulators in multi-rail systems, reducing BOM count and board area in smart meters and industrial sensors. |
| Ultra-low 2.5µA quiescent current | Enables >10-year battery life in 250mAh coin-cell-powered IoT endpoints operating at 1% duty cycle. |
| 500mV dropout @ 50mA | Permits use with partially discharged Li-ion cells (down to 3.3V) while maintaining regulated 2.8V output for MCU core logic. |
| Thermal shutdown + hysteresis | Prevents thermal runaway during overload or poor heatsinking; +20°C hysteresis avoids oscillation near trip point. |
| Low-ESR ceramic capacitor support | Removes dependency on tantalum or aluminum electrolytics, improving reliability and lifetime in high-temperature environments. |
Applications
| Smart Electricity Meters | Portable Medical Sensors |
|---|---|
Use Scenario: Powering metrology ASICs and real-time clocks in Class 0.2 revenue-grade e-meters exposed to 85°C ambient temperatures. IC Role / Device Role / Timing Role: Primary 2.8V supply for precision ADC reference and low-power RTC backup domain. Use Value: Maintains ±2% output accuracy over –40°C to +125°C, ensuring metrology calibration integrity without derating. |
Use Scenario: Regulating power for optical pulse oximeter analog front-end (AFE) and BLE SoC in wearable patches. IC Role / Device Role / Timing Role: Low-noise 2.8V rail for photodiode transimpedance amplifier and ADC driver stages. Use Value: 60dB PSRR at 1kHz suppresses switching noise from adjacent DC-DC converter, preserving SpO₂ measurement SNR. |
| Industrial Handheld Terminals | Asset Tracking Beacons |
Use Scenario: Supplying 2.8V to ARM Cortex-M0+ MCU and 2.4GHz sub-GHz transceiver in ruggedized field terminals. IC Role / Device Role / Timing Role: Main system LDO for digital core and RF interface, enabled via host GPIO. Use Value: 50mA capability supports simultaneous MCU + radio transmit bursts; thermal shutdown prevents damage during extended TX duty cycles. |
Use Scenario: Powering GPS/GNSS receiver and ultra-low-power MCU in battery-operated logistics trackers deployed for 5+ years. IC Role / Device Role / Timing Role: Standby-mode LDO delivering 2.8V to GNSS cold-start circuitry and RTC. Use Value: 2.5µA IQ enables <1µA system sleep current when paired with MCU-controlled EN pin sequencing. |
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 |
|---|---|---|---|
| MCP1700T-2802E/TT (Microchip) | 250mV dropout @ 250mA, but max input only 6V; 1.6µA IQ; SOT23-3 package. | Limited to low-input systems (e.g., single Li-ion); unsuitable for 12V/24V industrial rails. | Select when input ≤6V and higher current (250mA) is required; not drop-in for 40V-capable designs. |
| TPS70928DRVR (TI) | 200mV dropout @ 150mA, 1µA IQ, 24V max input, same SOT23-3 footprint. | Insufficient input range for 40V metering applications; lacks thermal shutdown hysteresis spec. | Preferred for ultra-low-power <24V systems where 200mV dropout justifies cost premium; verify thermal behavior under sustained load. |
Compared with MCP1700T-2802E/TT and TPS70928DRVR, AP7384-28SA-7 uniquely balances 40V input tolerance, 500mV/50mA dropout, and 2.5µA IQ in SOT23 - making it the only viable choice for long-life, wide-input industrial metering where both voltage headroom and standby efficiency are non-negotiable.
Availability
AP7384-28SA-7 is available at Aetrix Electronics and suitable for smart electricity meters, portable medical sensors, and industrial handheld terminals requiring stable component supply with guaranteed long-term manufacturability and RoHS/Green compliance.
Supply support for AP7384-28SA-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 AP7384 series belongs to Diodes' ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial equipment where low IQ, high input voltage tolerance, and ceramic capacitor compatibility are mandatory design requirements.
FAQ
What is the minimum input voltage required for AP7384-28SA-7 to regulate 2.8V output?
The AP7384-28SA-7 requires VIN ≥ VOUT + VDROP = 2.8V + 0.5V = 3.3V under full 50mA load, per datasheet absolute minimum operating condition. At lighter loads, regulation begins as low as 2.85V due to reduced dropout, but 3.3V is the guaranteed functional threshold across temperature and process variation.
Can AP7384-28SA-7 be used with 10µF tantalum output capacitors?
No - the AP7384-28SA-7 is explicitly characterized and stabilized for low-ESR ceramic capacitors (≥2.2µF). Tantalum capacitors exhibit higher ESR and potential surge-current failure modes that may cause instability or premature shutdown; Diodes specifies ceramic-only operation in DS40700 Rev. 3.
Does AP7384-28SA-7 include an enable pin?
No - AP7384-28SA-7 has no dedicated enable (EN) pin. It operates continuously when VIN is within specification. For controlled startup/shutdown, external MOSFET switching on the VIN rail or use of the pin-compatible AP7385 (which adds active-high EN) is required.
Is AP7384-28SA-7 qualified for automotive applications?
No - AP7384-28SA-7 is not AEC-Q100 qualified. Diodes explicitly states that automotive-grade versions require separate qualification (PPAP, IATF 16949 manufacturing, AEC-Q100 stress testing); this part is intended for industrial and commercial applications only.
AP7384-28SA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP7384-28SA-7 FAQ
1.How can I place an order for AP7384-28SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7384-28SA-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 AP7384-28SA-7 reliable?
The price and inventory of AP7384-28SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7384-28SA-7 is usually 5 days.
3.What payment methods are accepted for AP7384-28SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7384-28SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7384-28SA-7?
AP7384-28SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7384-28SA-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 AP7384-28SA-7?
For technical support, including AP7384-28SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7384-28SA-7 requirements.
6.How does Aetrix verify that AP7384-28SA-7 is sourced from the original manufacturer or authorized distributors?
All AP7384-28SA-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 AP7384-28SA-7 meets industry standards.
7.What is the process for return or replacement of AP7384-28SA-7?
All AP7384-28SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7384-28SA-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 AP7384-28SA-7 part is unused and in its original packaging.
Return procedure for AP7384-28SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7384-28SA-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
