EmbeddedRelated.com
    Parts    AP7361C-18SP-13
AP7361C-18SP-13

DIOAP7361C-18SP-13

Diodes Incorporated
Linear Voltage Regulator IC Positive Fixed 1 Output 1A 8-SO-EP
Active1,560 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The AP7361C-18SP-13 is a 1A, fixed-output linear voltage regulator designed to provide a stable 1.8V rail from input sources up to 6.5V. It features a low quiescent current of 60uA and high power supply rejection ratio, making it suitable for noise-sensitive digital circuits. The SO-8EP package includes an exposed pad for enhanced thermal dissipation, allowing the device to maintain high current output safely.

Why Choose This Part

This regulator offers a high PSRR of 75dB at 1kHz, which is critical for maintaining signal integrity in mixed-signal environments. It includes robust protection features such as fold-back short circuit protection, thermal shutdown, and built-in current limiting to prevent device failure during fault conditions. The 1% output accuracy ensures precise voltage regulation for sensitive digital logic rails.

Applications

Digital Core Power
Providing a stable 1.8V supply for FPGA cores, DSPs, and microcontrollers requiring high current during transient loads.
Battery-Powered Systems
Utilizing the 60uA low quiescent current to extend battery life in portable electronics.
Post-Regulator for Switching Supplies
Acting as a noise filter to clean up ripple from DC-DC converters for sensitive analog or RF stages.
Industrial Control Modules
Supplying power to sensor interfaces and communication ICs within an operating temperature range of -40C to +85C.

Key Specifications

PSRR 75dB ~ 55dB (1kHz ~ 10kHz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) Exposed Pad
Control Features Enable
Current - Output 1A
Protection Features Over Current, Over Temperature
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 85degC
Voltage - Input (Max) 6V
Voltage Dropout (Max) 0.57V @ 1A (Typ)
Supplier Device Package 8-SO-EP
Current - Quiescent (Iq) 80 uA
Voltage - Output (Min/Fixed) 1.8V

Getting Started

When designing your PCB, ensure the exposed pad of the SO-8EP package is soldered to a large ground plane to maximize thermal performance. Place a 2.2uF or larger ceramic capacitor close to the output pin to ensure stability and improve transient response. Use the Enable pin to power down the regulator and reduce current consumption in standby modes.

AP7361 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output Type Package Temp Range Voltage Dropout (Max) Output V Stock
AP7361C-18SP-13 (this part) Fixed SOIC-8 -40degC ~ 85degC 0.57V 1.8V 1,560
AP7361C-33ER-13 Fixed 4-261 -40degC ~ 85degC (.. 0.36V 3.3V 10,822
AP7361C-18FGE-7 Fixed UDFN-8 -40degC ~ 85degC 0.57V 1.8V 9,727
AP7361C-FGE-7 Adjustable UDFN-8 -40degC ~ 85degC 0.36V 0.8V 32,947
AP7361C-25E-13 Fixed 4-261 -40degC ~ 85degC 0.44V 2.5V 22,215
AP7361C-25ER-13 Fixed 4-261 -40degC ~ 85degC 0.44V 2.5V 2,267
AP7361C-33E-13 Fixed 4-261 -40degC ~ 85degC 0.36V 3.3V —
AP7361C-12E-13 Fixed 4-261 -40degC ~ 85degC 0.7V 1.2V —
AP7361C-15E-13 Fixed 4-261 -40degC ~ 85degC 0.57V 1.5V —
AP7361C-28E-13 Fixed 4-261 -40degC ~ 85degC 0.36V 2.8V —

Also Consider

AP7361C-18E-13 DIODiodes Incorporated - Same electrical specifications but in a SOT223 package for applications where a larger footprint or different thermal profile is required.