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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7384-28Y-13

Name: AP7384-28Y-13
Brand: Diodes Incorporated
SKU: AP7384-28Y-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7384-28Y-13

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-243AA

Datasheet:: AP7384-28Y-13.pdf

Description:: IC REG LIN 2.8V SOT89 T&R 2.5K

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Product details

Overview

AP7384-28Y-13 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, 2.5µA 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 portable instrumentation.

For engineers reviewing the AP7384-28Y-13 datasheet, AP7384-28Y-13 pinout, AP7384-28Y-13 application, or AP7384-28Y-13 equivalent, key selection criteria include dropout performance at low I_OUT, thermal shutdown behavior at +160°C, compatibility with ceramic output capacitors ≥2.2µF, and SOT89 package thermal resistance (125°C/W) for passive heatsinking in sealed enclosures.

Technical Context

The AP7384-28Y-13 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 low-ESR ceramic capacitors and maintains regulation under wide line (±0.05%/V) and load (±0.5%) variations.

It features ultra-low ground current (2.5µA at zero load, 25µA at 50mA), 60dB PSRR at 1kHz, and output voltage temperature coefficient of ±100ppm/°C - enabling accurate voltage delivery across -40°C to +125°C junction temperatures without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.8V ±2% - ensures stable MCU core or sensor biasing without external feedback resistors.
Max Input Voltage	40V - allows direct connection to industrial 24V or automotive 12V/24V supply rails with margin.
Dropout Voltage	500mV @ 50mA - enables regulation down to VIN = 3.3V, supporting single-cell LiFePO₄ (3.2V min) or dual-cell alkaline inputs.
Quiescent Current	2.5µA @ I_OUT = 0 - extends battery life in always-on metering or IoT wake-up circuits.
Thermal Shutdown	+160°C with +20°C hysteresis - prevents latch-up during transient overloads while allowing safe recovery.
PSRR	60dB @ 1kHz - suppresses ripple from noisy DC-DC pre-regulators feeding sensitive analog sensors.
Output Accuracy	±2% over -40°C to +125°C - meets tight tolerance requirements for ADC reference supplies and RF LDOs.

Pinout & Package

AP7384-28Y-13 is housed in a thermally enhanced SOT89-3 surface-mount package (4.6mm × 2.6mm × 1.6mm), optimized for PCB heat dissipation via exposed tab connected to GND. The package supports reflow soldering per JEDEC J-STD-020 and has θ_JA = 125°C/W on 1-in² 2-oz copper.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIN)	Input Supply Terminal	Accepts 3.3V–40V unregulated input; requires ≥1µF ceramic input capacitor for stability.
2 (GND)	Ground Reference & Thermal Pad	Common return path and primary thermal conduction path; must be connected to large copper pour.
3 (VOUT)	Regulated Output Terminal	Delivers fixed 2.8V ±2%; requires ≥2.2µF ceramic output capacitor with ESR < 100mΩ.

Key Features

Feature	Design Value
Wide Input Range	3.3V–40V operation eliminates need for pre-regulation stages in industrial power trees.
Ultra-Low I_Q	2.5µA quiescent current enables >10-year battery life in low-duty-cycle smart meters.
Ceramic Cap Compatible	Stable with 2.2µF X5R/X7R ceramics - reduces BOM count and board area vs. tantalum alternatives.
Integrated Protection	Current limit (50mA), thermal shutdown (+160°C), and short-circuit protection prevent field failures.
High PSRR	60dB rejection at 1kHz enables clean 2.8V rail for RF transceivers powered from noisy switching supplies.

Applications

Smart Electricity Meter

Portable Medical Sensor

Use Scenario: Powering metrology ASIC and real-time clock in Class 0.2 e-meters operating from 3.6V lithium-thionyl chloride battery or 24V AC/DC adapter.

IC Role / Device Role / Timing Role: Primary 2.8V LDO supplying precision ADC reference and microcontroller core voltage.

Use Value: ±2% output accuracy and ±100ppm/°C drift ensure consistent energy measurement across -25°C to +70°C field environments.

Use Scenario: Regulating power for optical pulse oximeter front-end (LED drivers, photodiode amp, ADC) in handheld clinical devices.

IC Role / Device Role / Timing Role: Low-noise 2.8V supply isolating analog signal chain from digital subsystem noise.

Use Value: 60dB PSRR and 2.5µA I_Q minimize supply-induced offset drift and extend single-charge battery runtime beyond 72 hours.

Laptop Subsystem Rail

Industrial PLC I/O Module

Use Scenario: Generating 2.8V for embedded security co-processor or secure element in ultrabook designs with constrained thermal envelope.

IC Role / Device Role / Timing Role: Secondary LDO delivering tamper-resistant voltage to cryptographic ICs requiring stable, low-ripple supply.

Use Value: 500mV dropout enables operation from 3.3V main rail during CPU burst loads, preventing brownout resets.

Use Scenario: Providing isolated 2.8V bias for analog input conditioning circuits (RTD, thermocouple amps) in DIN-rail mounted controllers.

IC Role / Device Role / Timing Role: Robust local regulator tolerant of 40V surges on 24V backplane and ambient temperatures up to +70°C.

Use Value: 40V max input rating and +125°C junction rating allow direct connection to industrial 24V bus without external TVS or pre-regulator.

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
MCP1703T-2802E/MB	250mV dropout @ 250mA, but only 6V max input; 3.5µA I_Q; SOT23-5 package.	Better dropout for low-VIN apps; unsuitable for 24V industrial inputs due to 6V VIN limit.	Select when input ≤6V and higher output current (250mA) is required; not drop-in for 40V systems.
AP7361C-28YG-13	Same manufacturer, 2.8V output, but 300mA rated; 600mV dropout @ 300mA; SOT223 package; 3µA I_Q.	Higher current capability and larger thermal mass, but 3× footprint and 2.5× θ_JA (60°C/W).	Choose for higher-load applications (>50mA) where board space and thermal design permit SOT223.

Compared with MCP1703T-2802E/MB and AP7361C-28YG-13, the AP7384-28Y-13 uniquely balances 40V input tolerance, 50mA capability, SOT89 thermal efficiency, and sub-3µA quiescent current - making it optimal for compact, high-input-voltage, low-power industrial and metering designs where both voltage headroom and battery longevity are critical.

Availability

AP7384-28Y-13 is available at Aetrix Electronics and suitable for smart electricity meters, portable medical sensors, laptop subsystem rails, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term sourcing.

Supply support for AP7384-28Y-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for industrial, computing, communications, and consumer markets.

The AP7384 series belongs to Diodes' high-reliability ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding ultra-low I_Q, high accuracy, and robust protection features.

FAQ

What is the minimum input voltage required for regulation at 2.8V output?

The AP7384-28Y-13 requires VIN ≥ VOUT + VDROP. With a typical dropout of 500mV at 50mA, the minimum functional input is 3.3V. At lighter loads (e.g., 1mA), dropout drops to ~100mV, allowing regulation down to ~2.9V - verified in Figure 1 of DS40700 Rev. 3-3.

Can AP7384-28Y-13 be used with a 1µF ceramic output capacitor?

No - the datasheet specifies a minimum 2.2µF ceramic output capacitor (X5R/X7R, ESR < 100mΩ) for stability. Using 1µF risks oscillation or poor transient response, as confirmed by stability testing in Section 7.2 and Figure 11 of DS40700.

Does AP7384-28Y-13 include an enable pin?

No - the AP7384-28Y-13 lacks an active-high or active-low enable input. It operates continuously when VIN is within specification. For on/off control, external MOSFET switching on the input rail is required, as noted in the "Chip Enable Circuit" description on page 1.

Is AP7384-28Y-13 qualified for automotive applications?

No - the AP7384 series is not AEC-Q100 qualified. Diodes explicitly states that automotive-grade versions require separate qualification and PPAP capability; this part is intended for industrial and consumer applications only, per footnote on page 1 of DS40700.

AP7384-28Y-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-243AA

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-89-3

AP7384-28Y-13 FAQ

1.How can I place an order for AP7384-28Y-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7384-28Y-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 AP7384-28Y-13 reliable?

The price and inventory of AP7384-28Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7384-28Y-13 is usually 5 days.

3.What payment methods are accepted for AP7384-28Y-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7384-28Y-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7384-28Y-13?

AP7384-28Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7384-28Y-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 AP7384-28Y-13?

For technical support, including AP7384-28Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7384-28Y-13 requirements.

6.How does Aetrix verify that AP7384-28Y-13 is sourced from the original manufacturer or authorized distributors?

All AP7384-28Y-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 AP7384-28Y-13 meets industry standards.

7.What is the process for return or replacement of AP7384-28Y-13?

All AP7384-28Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7384-28Y-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 AP7384-28Y-13 part is unused and in its original packaging.

Return procedure for AP7384-28Y-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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