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

Diodes Incorporated AP7361C-12DR-13

Name: AP7361C-12DR-13
Brand: Diodes Incorporated
SKU: AP7361C-12DR-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7361C-12DR-13

Manufacturer:: Diodes Incorporated

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

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: AP7361C-12DR-13.pdf

Description:: IC REG LINEAR 1.2V 1A TO252-R

Quantity:: RFQ Add To RFQ list

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Inventory:1,663

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Product details

Overview

AP7361C-12DR-13 from Diodes Incorporated is a 1A fixed-output (1.2V) ultra-low dropout linear regulator with enable, designed for power rail regulation in space-constrained portable and battery-powered systems. It delivers ±1% output accuracy, 360mV dropout at 1A (for 3.3V version; 1.2V variant maintains sub-500mV dropout), 60µA quiescent current, and integrated thermal shutdown and fold-back short-circuit protection. It supports stable operation with ≥2.2µF MLCC output capacitors and operates across –40°C to +85°C ambient.

For engineers reviewing the AP7361C-12DR-13 datasheet, AP7361C-12DR-13 pinout, AP7361C-12DR-13 application, or AP7361C-12DR-13 equivalent, key selection criteria include dropout voltage at 1.2V output, EN pin logic thresholds (VIH = 1.0V min), thermal resistance of TO252 (DPAK)R package (95°C/W), and compatibility with low-ESR ceramic output capacitors in compact consumer electronics designs.

Technical Context

The AP7361C-12DR-13 implements a PMOS pass transistor architecture enabling ultra-low dropout performance and high PSRR (75dB @ 1kHz). Its internal 0.8V bandgap reference and error amplifier regulate output via feedback-fixed-mode eliminates external resistors, simplifying layout for 1.2V rail generation.

Enable control is active-high with VIH ≥1.0V and VIL ≤0.3V; EN pin includes a 3.0MΩ internal pull-down resistor. Protection circuitry includes 1.5A current limit, 400mA fold-back short-circuit clamp, and thermal shutdown activation at ~150°C with 20°C hysteresis-ensuring robust fault recovery in thermally demanding environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.2V ±1% - ensures precise core voltage for low-power microcontrollers and sensors.
Max Output Current	1.0A continuous - supports moderate-power digital loads without external current boosting.
Dropout Voltage	≤440mV at 1A (1.2V output) - enables regulation from 1.64V input, critical for single-cell Li-ion or LiFePO₄ systems.
Quiescent Current	60µA typical - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up circuits.
PSRR	75dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input.
Thermal Shutdown	150°C activation with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking.
Input Voltage Range	2.2V to 6.0V - accommodates wide-input sources including USB, boost converters, or multi-cell batteries.

Pinout & Package

AP7361C-12DR-13 uses the TO252 (DPAK)R package: 3-pin surface-mount outline with exposed thermal pad, pin 1 = GND, pin 2 = OUT, pin 3 = IN. Thermal resistance θ_JA = 95°C/W on standard 2"×2" FR-4 board with recommended copper pour.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (GND)	Ground reference and thermal path	Must be connected to large PCB ground plane; serves as primary heat dissipation path for the thermal pad.
Pin 2 (OUT)	Regulated output node	Requires ≥2.2µF ceramic capacitor placed adjacent to pin; low-ESR cap improves load transient response.
Pin 3 (IN)	Unregulated input supply	Needs ≥1µF ceramic decoupling capacitor close to pin; wide trace reduces impedance and input ripple coupling.

Key Features

Feature	Design Value
Ultra-low dropout at 1.2V	440mV max at 1A - enables efficient 1.2V rail generation from marginal input voltages (e.g., 1.64V).
Active-high enable with pull-down	3.0MΩ internal EN pull-down - eliminates need for external resistor when EN is unused; ensures default-off safety.
Fold-back short-circuit protection	Clamps output to ~400mA during hard short - limits power dissipation and prevents thermal runaway under fault.
Stable with small MLCCs	Works with ≥2.2µF X5R/X7R ceramic caps - reduces BOM count and board area vs. electrolytic/tantalum alternatives.
Green packaging	Halogen- and antimony-free, RoHS 3 compliant - meets environmental compliance requirements for global consumer shipments.

Applications

Smart Wearable Power Rail

IoT Sensor Node Core Supply

Use Scenario: Powering ARM Cortex-M0+ MCU and BLE radio in wrist-worn health monitor with single-cell Li-ion battery.

IC Role / Device Role / Timing Role: Primary 1.2V core voltage regulator delivering clean, low-noise supply independent of battery voltage sag.

Use Value: 60µA quiescent current extends battery life beyond 14 days in sleep mode; 440mV dropout allows full functionality down to 1.64V battery voltage.

Use Scenario: Providing stable 1.2V supply to ultra-low-power environmental sensor ASIC in battery-operated smart agriculture node.

IC Role / Device Role / Timing Role: Fixed-output LDO ensuring precise analog front-end biasing and ADC reference stability across temperature.

Use Value: ±1% output accuracy maintains sensor calibration integrity; 75dB PSRR rejects noise from co-located RF transceiver switching.

Set-Top Box SoC I/O Domain

Home Appliance Display Controller

Use Scenario: Generating 1.2V I/O supply for video decoder SoC in energy-efficient HD set-top box with standby power budget <100mW.

IC Role / Device Role / Timing Role: Always-on auxiliary regulator enabling fast wake-from-standby while maintaining I/O voltage integrity.

Use Value: Active-high EN allows precise system-level power sequencing; thermal shutdown protects against enclosure overheating during prolonged operation.

Use Scenario: Regulating 1.2V for LCD segment driver and touch controller in smart refrigerator display module.

IC Role / Device Role / Timing Role: Compact, thermally robust LDO replacing larger SOT223 solution in tight rear-panel space.

Use Value: TO252 (DPAK)R package provides 95°C/W thermal resistance - sufficient for 0.5W dissipation without heatsink in 45°C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1202E/TT (Microchip)	250mA max output, 170mV dropout at 100mA, no EN pin, SOT23-3 package	Limited to low-current peripherals; lacks enable and thermal shutdown	Select only for <200mA loads where EN and fault protection are unnecessary.
Torex XC6210B122MR-G (Torex)	1A output, 1.2V fixed, 300mV dropout at 1A, EN pin, SOT25 package	Higher PSRR (80dB @ 1kHz), but lower thermal robustness (θ_JA = 200°C/W)	Prefer for noise-sensitive analog rails; avoid in thermally constrained enclosures without forced airflow.

Compared with MCP1700T-1202E/TT, AP7361C-12DR-13 delivers 4× higher current and full protection suite; versus XC6210B122MR-G, it trades 5dB PSRR for 2× better thermal performance in TO252 (DPAK)R-making it superior for sustained 1A loads in consumer enclosures.

Availability

AP7361C-12DR-13 is available at Aetrix Electronics and suitable for smart wearables, IoT sensor nodes, set-top box power management, and home appliance display controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP7361C-12DR-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 consumer markets.

The AP7361C belongs to Diodes' precision LDO portfolio targeting battery-powered and space-constrained applications where ultra-low dropout, low IQ, and integrated protection are mandatory design requirements.

FAQ

What is the minimum input voltage required for AP7361C-12DR-13 to maintain regulation at 1.2V output?

The AP7361C-12DR-13 requires VIN ≥ 1.64V to sustain 1.2V output at 1A load, based on its maximum 440mV dropout specification. At lighter loads (e.g., 100mA), dropout drops to ~300mV, allowing regulation down to ~1.5V input. Input must remain ≥2.2V per absolute maximum rating to avoid device stress.

Can the EN pin be left floating, or does it require external biasing?

The EN pin must not be left floating: it features an internal 3.0MΩ pull-down resistor, ensuring default-off behavior when unconnected. For guaranteed turn-on, tie EN directly to VIN or a logic-high source meeting VIH ≥1.0V. Floating EN risks erratic enable/disable due to noise coupling in high-EMI environments.

Is AP7361C-12DR-13 compatible with ceramic output capacitors smaller than 2.2µF?

No-Diodes specifies ≥2.2µF ceramic capacitance for guaranteed stability across all operating conditions. Using smaller values (e.g., 1µF) may cause oscillation or degraded load transient response, especially at high output currents. X5R/X7R dielectrics with ≤100mΩ ESR are recommended.

How does thermal performance differ between TO252 (DPAK) and TO252 (DPAK)R packages?

TO252 (DPAK)R (used in AP7361C-12DR-13) has reversed pinout (GND-OUT-IN) but identical thermal resistance (θ_JA = 95°C/W) to standard TO252 (DPAK) when mounted per Diodes' recommended layout. Both require thermal vias under the exposed pad and ≥1in² copper pour for optimal heat dissipation.

AP7361C-12DR-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 1.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.7V @ 1A

Current - Output:: 1A

Current - Quiescent (Iq):: 80 µA

Current - Supply (Max):: -

PSRR:: 75dB ~ 55dB (1kHz ~ 10kHz)

Control Features:: -

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252-R

AP7361C-12DR-13 FAQ

1.How can I place an order for AP7361C-12DR-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7361C-12DR-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 AP7361C-12DR-13 reliable?

The price and inventory of AP7361C-12DR-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7361C-12DR-13 is usually 5 days.

3.What payment methods are accepted for AP7361C-12DR-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361C-12DR-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7361C-12DR-13?

AP7361C-12DR-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7361C-12DR-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 AP7361C-12DR-13?

For technical support, including AP7361C-12DR-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361C-12DR-13 requirements.

6.How does Aetrix verify that AP7361C-12DR-13 is sourced from the original manufacturer or authorized distributors?

All AP7361C-12DR-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 AP7361C-12DR-13 meets industry standards.

7.What is the process for return or replacement of AP7361C-12DR-13?

All AP7361C-12DR-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361C-12DR-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 AP7361C-12DR-13 part is unused and in its original packaging.

Return procedure for AP7361C-12DR-13:

1.Submit a request within 90 days.

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

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