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

Diodes Incorporated AP7361C-12D-13

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

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Part No.:: AP7361C-12D-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-12D-13.pdf

Description:: IC REG LINEAR 1.2V 1A TO252-3

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Product details

Overview

AP7361C-12D-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 variant; 1.2V variant exhibits ~600mV typical at 1A), 60µA quiescent current, and integrates thermal shutdown, fold-back short-circuit protection (400mA), and current limit (1.5A).

For engineers reviewing the AP7361C-12D-13 datasheet, AP7361C-12D-13 pinout, AP7361C-12D-13 application, or AP7361C-12D-13 equivalent, key selection considerations include its TO252 (DPAK) package thermal performance (θJA = 95°C/W), EN pin logic thresholds (VIH = 1.0V min), stability with ≥2.2µF MLCC output capacitors, and absence of ON/OFF control in TO252 packages per datasheet Section 11.

Technical Context

The AP7361C-12D-13 implements a PMOS pass transistor architecture enabling ultra-low dropout operation and high PSRR (75dB @ 1kHz). Its internal 0.8V band-gap reference and error amplifier regulate output voltage via feedback-fixed-mode bypasses ADJ pin, simplifying design for 1.2V rail generation.

Thermal shutdown triggers at 150°C with 20°C hysteresis, while fold-back current limiting reduces output to 400mA during short-circuit events. The device operates across –40°C to +85°C ambient and requires no minimum load for stability, supporting true zero-load regulation.

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 peripherals without external boosting.
Dropout Voltage	~600mV typical at 1A (1.2V output) - enables operation down to VIN = 1.8V, critical for single-cell Li-ion or 2xAA systems.
Quiescent Current	60µA typical - minimizes standby power loss in always-on battery applications.
PSRR	75dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input.
Enable Threshold	VIH = 1.0V min, VIL = 0.3V max - compatible with 1.8V and 3.3V GPIOs without level-shifting.
Thermal Shutdown	150°C activation with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking.

Pinout & Package

AP7361C-12D-13 uses the TO252 (DPAK) package with exposed thermal pad (pin 2 = GND), optimized for PCB heat dissipation. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT. EN and ADJ pins are not implemented in TO252 variants per datasheet Section 11 ("ON/OFF Input Operation").

Pin	Circuit Role	Design Meaning
1	IN	Regulator input; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin to suppress supply noise and ensure stability.
2	GND	Power ground and thermal reference; must be connected to large copper pour for thermal management and low-impedance return path.
3	OUT	Regulated 1.2V output; requires ≥2.2µF ceramic capacitor directly at pin for transient response and stability; no ADJ/EN functionality in this package.

Key Features

Feature	Design Value
Ultra-Low Dropout	600mV typical at 1A (1.2V output) - extends usable battery life by enabling regulation deeper into discharge curve.
Zero-Load Stability	No minimum load required - eliminates need for wasteful bleed resistors in low-power sleep modes.
Fold-Back Short-Circuit Protection	Limits output to 400mA during fault - prevents thermal runaway while allowing safe recovery when fault clears.
High PSRR	75dB @ 1kHz - maintains clean 1.2V rail despite noisy DC/DC input, reducing need for additional filtering.
Green Packaging	Halogen- and antimony-free, RoHS-compliant - meets environmental compliance requirements for consumer and industrial end products.

Applications

Portable Medical Sensors

Industrial PLC I/O Modules

Use Scenario: Powering ultra-low-power analog front-ends and BLE transceivers in wearable ECG monitors.

IC Role / Device Role / Timing Role: Primary 1.2V supply for ADC reference and microcontroller core, replacing less efficient switching solutions.

Use Value: 60µA quiescent current extends battery life beyond 12 months on coin cell; 600mV dropout allows operation until battery reaches 1.8V.

Use Scenario: Providing isolated 1.2V bias for precision current-sense amplifiers in 24V industrial I/O cards.

IC Role / Device Role / Timing Role: Local post-regulation stage after wide-input DC/DC converter, rejecting ripple and noise from shared 5V bus.

Use Value: 75dB PSRR suppresses 100kHz switching artifacts, improving ADC SNR by >12dB versus unregulated supply.

Smart Home Hub Processors

Automotive Body Control Modules

Use Scenario: Supplying 1.2V core voltage to ARM Cortex-M7 SoCs in Wi-Fi/Zigbee gateways during deep-sleep states.

IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and wake-up circuitry while main SoC is powered down.

Use Value: Zero-load stability and 60µA IQ eliminate need for external enable sequencing, simplifying power tree design.

Use Scenario: Generating 1.2V for CAN transceiver logic rails in non-safety-critical body electronics.

IC Role / Device Role / Timing Role: Secondary LDO fed from 5V system rail, providing clean, thermally robust local regulation.

Use Value: TO252 package's 95°C/W θJA enables reliable operation at +85°C ambient without heatsink, reducing BOM cost.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1202E/TT	250mA max output, 6µA IQ, SOT23-5 package - lower current, far lower quiescent current, smaller footprint.	Suitable only for sub-250mA loads; lacks thermal shutdown hysteresis and fold-back protection.	Select when ultra-low IQ dominates over current capability and thermal robustness.
TLS850F0TES/V0X	500mA automotive-grade LDO, AEC-Q100 qualified, integrated watchdog - higher reliability, lower current, automotive-specific features.	Requires PPAP documentation and automotive change control; not drop-in for commercial designs.	Select only for automotive production requiring AEC-Q100 qualification and functional safety support.

Compared with MCP1700T-1202E/TT, AP7361C-12D-13 delivers 4× higher output current and robust thermal/fault protection at the cost of 10× higher IQ; versus TLS850F0TES/V0X, it offers higher current and broader commercial qualification but lacks automotive certification and watchdog functionality.

Availability

AP7361C-12D-13 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub processors, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and TO252 thermal performance.

Supply support for AP7361C-12D-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 ICs, with emphasis on power management, signal integrity, and connectivity solutions.

The AP7361C belongs to Diodes' high-performance LDO regulator product line, engineered for efficiency-critical battery-powered and industrial applications where low dropout, low IQ, and robust fault protection are mandatory.

FAQ

Does AP7361C-12D-13 support enable functionality?

No. The TO252 (DPAK) package variant-denoted by "D" in the part number-does not implement the EN pin, as explicitly stated in Section 11 of the datasheet titled "ON/OFF Input Operation." The device is permanently enabled in this configuration, with no external control over turn-on/turn-off sequencing.

What is the minimum output capacitance required for stability?

The AP7361C-12D-13 is stable with a minimum 2.2µF ceramic output capacitor, as confirmed in the "Output Capacitor" section (page 11). Larger values improve transient response but are not required for basic stability. Tantalum or polymer capacitors may be used if their ESR falls within the stable region defined in Figure 19.

Can AP7361C-12D-13 be used with a 1.5V input supply?

No. The absolute minimum input voltage is 2.2V per Recommended Operating Conditions (page 5). At 1.2V output, a 1.5V input would violate the 600mV minimum headroom requirement and cause dropout failure. Valid input range is strictly 2.2V–6.0V.

Is thermal pad connection mandatory for AP7361C-12D-13?

Yes. The TO252 (DPAK) package includes an exposed thermal pad (pin 2 = GND) that must be soldered to a PCB copper pour. Datasheet page 6 specifies θJA = 95°C/W under defined test conditions including thermal vias to inner ground planes-omitting this connection degrades thermal performance and risks premature thermal shutdown under 1A load.

AP7361C-12D-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-252-3

AP7361C-12D-13 FAQ

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

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

The price and inventory of AP7361C-12D-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-12D-13 is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your AP7361C-12D-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-12D-13?

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

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

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

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

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

Return procedure for AP7361C-12D-13:

1.Submit a request within 90 days.

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

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