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

Diodes Incorporated AP7383-36FDC-7

Name: AP7383-36FDC-7
Brand: Diodes Incorporated
SKU: AP7383-36FDC-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7383-36FDC-7

Manufacturer:: Diodes Incorporated

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

Package:: 6-UDFN Exposed Pad

Datasheet:: AP7383-36FDC-7.pdf

Description:: LDO CMOS LOWCURR U-DFN2020-6 T&R

Quantity:: RFQ Add To RFQ list

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Inventory:4,005

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Product details

Overview

AP7383-36FDC-7 from Diodes Incorporated is a fixed-output 3.6V, 150mA ultra-low dropout (ULDO) linear regulator in U-DFN2020-6 (Type C) package. It delivers ±1% output voltage accuracy over load, line, and temperature, supports input voltages up to 30V, achieves 360mV dropout at 50mA, and draws only 1.8µA ground current at no load - enabling long battery life in portable instrumentation and USB-powered devices.

For engineers reviewing the AP7383-36FDC-7 datasheet, AP7383-36FDC-7 pinout, AP7383-36FDC-7 application, or AP7383-36FDC-7 equivalent, key selection criteria include its 30V max input rating, thermal shutdown at +160°C, enable control with 0.4V logic-low threshold, compatibility with 1µF ceramic capacitors, and junction-to-ambient thermal resistance of 152°C/W in the U-DFN2020-6 package.

Technical Context

The AP7383-36FDC-7 integrates a precision voltage reference, error amplifier, resistor feedback network, current-limit protection circuit, and chip-enable logic - all optimized for stable regulation under wide-input, low-quiescent-current conditions. Its architecture enables operation down to 3.5V input while maintaining 3.6V output across 1mA–150mA loads.

It features active thermal shutdown with 20°C hysteresis, 0.05%/V line regulation, and 0.5% load regulation - ensuring consistent output under dynamic supply and load transients. The U-DFN2020-6 (Type C) package provides enhanced thermal performance versus SOT25 variants, with θ_JA = 152°C/W and θ_JC = 58°C/W on JEDEC High-K board.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.6V ±1% (ensures stable rail for 3.3V/3.6V logic and analog sensors)
Max Input Voltage	30V (supports wide-range industrial/automotive inputs without external pre-regulation)
Dropout Voltage	360mV @ 50mA (enables regulation from 4.0V input - critical for single-cell LiFePO₄ or dual-cell alkaline systems)
Ground Current	1.8µA @ I_OUT = 0mA (minimizes standby power loss in battery-backed systems)
Current Limit	150mA (protects against short-circuit while sustaining full rated load)
Thermal Shutdown	+160°C with +20°C hysteresis (prevents permanent damage during sustained overload or poor PCB heatsinking)
Enable Threshold	V_EN(HI) ≥ 2.0V, V_EN(LO) ≤ 0.4V (directly compatible with 1.8V/3.3V GPIO without level-shifting)

Pinout & Package

U-DFN2020-6 (Type C) package: 2.0mm × 2.0mm × 0.6mm body, 0.65mm pitch, NiPdAu-plated copper leadframe, moisture sensitivity level 1 (J-STD-020), recommended pad layout per Diodes' outline drawing.

Pin/Terminal	Circuit Role	Design Meaning
1	VIN	Main input supply connection; accepts 3.5V–30V; requires 1µF ceramic decoupling capacitor
2	GND	Power ground reference; must be connected to low-impedance PCB ground plane for stability and thermal dissipation
3	VOUT	Regulated 3.6V output; supplies load and requires 1µF ceramic output capacitor for loop stability
4	NC	No internal connection; recommended to tie to GND to maximize thermal copper area on PCB
5	NC	No internal connection; recommended to tie to GND to maximize thermal copper area on PCB
6	EN	Active-high enable input; pulls regulator into ultra-low-I_Q standby mode (<0.01µA) when held ≤0.4V

Key Features

Feature	Design Value
Wide input range	3.5V to 30V - eliminates need for upstream buck converter in 12V/24V industrial or automotive auxiliary rails
Ultra-low quiescent current	1.8µA at zero load - extends battery runtime in always-on sensor nodes and IoT endpoints
Ceramic capacitor compatible	Stable with 1µF input/output ceramics - reduces BOM cost and board space vs. tantalum or electrolytic alternatives
High accuracy & regulation	±1% V_OUT, 0.05%/V line reg, 0.5% load reg - ensures reliable operation of precision ADCs and RF front-ends
Integrated protection	Current limit (150mA), thermal shutdown (+160°C), and EN-controlled shutdown - simplifies system-level fault management

Applications

Portable Medical Sensors

USB-Powered Test Equipment

Use Scenario: Wearable ECG monitor powered by CR2032 coin cell with intermittent Bluetooth transmission.

IC Role / Device Role / Timing Role: Primary 3.6V LDO supplying analog front-end, microcontroller core, and BLE radio.

Use Value: 1.8µA ground current extends battery life beyond 12 months; 360mV dropout allows operation down to 3.96V input - matching CR2032 end-of-life voltage.

Use Scenario: Handheld multimeter drawing power from USB 5V bus with isolated analog measurement section.

IC Role / Device Role / Timing Role: Isolated 3.6V rail generator for high-precision ADC reference and op-amp biasing.

Use Value: ±1% output accuracy and 0.5% load regulation ensure <0.01% measurement error across 1mA–150mA load swings during auto-ranging.

Industrial Data Loggers

Automotive Cabin Sensors

Use Scenario: Battery-backed environmental logger using LiFePO₄ (2.5V–3.65V/cell) with 12V backup input.

IC Role / Device Role / Timing Role: Dual-input LDO managing both battery and 12V auxiliary supply via external OR-ing diode.

Use Value: 30V max input withstands load-dump transients; thermal shutdown prevents failure during extended high-temp deployment in enclosures.

Use Scenario: Occupancy sensor module in vehicle cabin powered from 12V battery with CAN interface.

IC Role / Device Role / Timing Role: Clean 3.6V supply for PIR sensor IC and low-power MCU, enabled only during wake cycles.

Use Value: EN pin enables microsecond-scale power gating; 0.4V logic-low threshold interfaces directly with MCU GPIO without pull-down resistors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output ULDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-3602E/MB	300mV dropout @ 250mA, but only 13V max input; 2.5µA I_Q; SOT23-5 package	Limited to ≤13V systems; higher thermal resistance (250°C/W) limits power handling in compact layouts	Prefer for cost-sensitive ≤13V designs where 250mA output is required and board space permits larger thermal pads
TLD11350FXTMA1	3.6V output, 350mV dropout @ 150mA, AEC-Q100 Grade 1 qualified, 40V max input, 2.2µA I_Q	Automotive-qualified with extended temp range (−40°C to +125°C); higher cost and longer lead times	Required for production automotive ECUs; over-specified for commercial portable equipment due to qualification overhead

Compared with MCP1703T-3602E/MB, AP7383-36FDC-7 offers 2.3× higher input voltage tolerance and 25% lower thermal resistance; versus TLD11350FXTMA1, it provides identical electrical specs at non-automotive pricing and availability, making it optimal for industrial and consumer portable designs.

Availability

AP7383-36FDC-7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, USB-powered test gear, and industrial data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP7383-36FDC-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' wide-input ULDO regulator product line, designed specifically for space-constrained, battery-sensitive applications demanding high accuracy, ultra-low I_Q, and robust thermal protection - such as portable medical devices and USB-C peripheral power rails.

FAQ

What is the minimum input voltage required for regulation at 3.6V output?

The AP7383-36FDC-7 requires VIN ≥ VOUT + VDROP. At 50mA load, VDROP = 360mV (typ), so minimum VIN = 3.96V. At 150mA, VDROP rises to 1050mV (typ), requiring VIN ≥ 4.65V. The datasheet specifies 3.5V as absolute minimum operating VIN, but regulation is only guaranteed above VOUT + VDROP across the full load/temperature range.

Can the AP7383-36FDC-7 be used without an enable signal?

Yes - the EN pin is active-high and internally pulled up in the AP7383 series. Leaving EN unconnected results in default-enabled operation. However, tying EN to VIN via a 100kΩ resistor improves noise immunity, while connecting EN to GND forces shutdown with <0.01µA standby current. No external pull-up is required for basic operation.

Is the U-DFN2020-6 (Type C) package thermally adequate for 150mA continuous output?

Yes - with θ_JA = 152°C/W on JEDEC High-K board, power dissipation at 150mA and 30V input (PD ≈ 3.99W) would raise junction temperature by ~607°C - exceeding limits. But under realistic conditions (e.g., VIN = 5.5V, VDROP = 0.4V), PD = 0.06W → ΔT_J ≈ 9°C, well within the −40°C to +125°C operating range. Thermal performance depends critically on PCB copper area connected to pins 2 (GND) and 4/5 (NC-to-GND).

Does the AP7383-36FDC-7 require specific capacitor ESR values?

No - the AP7383-36FDC-7 is explicitly designed for low-ESR ceramic capacitors (1µF typical). Unlike older LDOs, it does not require minimum ESR for stability and remains unconditionally stable with ESR as low as 1mΩ. This eliminates need for damping resistors or specialized tantalum capacitors, reducing cost and footprint.

AP7383-36FDC-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-UDFN Exposed Pad

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:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: U-DFN2020-6 (Type C)

AP7383-36FDC-7 FAQ

1.How can I place an order for AP7383-36FDC-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7383-36FDC-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 AP7383-36FDC-7 reliable?

The price and inventory of AP7383-36FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-36FDC-7 is usually 5 days.

3.What payment methods are accepted for AP7383-36FDC-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-36FDC-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7383-36FDC-7?

AP7383-36FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7383-36FDC-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 AP7383-36FDC-7?

For technical support, including AP7383-36FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-36FDC-7 requirements.

6.How does Aetrix verify that AP7383-36FDC-7 is sourced from the original manufacturer or authorized distributors?

All AP7383-36FDC-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 AP7383-36FDC-7 meets industry standards.

7.What is the process for return or replacement of AP7383-36FDC-7?

All AP7383-36FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-36FDC-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 AP7383-36FDC-7 part is unused and in its original packaging.

Return procedure for AP7383-36FDC-7:

1.Submit a request within 90 days.

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

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