S-1137B18-M5T1U Allicdata Electronics
Allicdata Part #:

S-1137B18-M5T1U-ND

Manufacturer Part#:

S-1137B18-M5T1U

Price: $ 0.25
Product Category:

Integrated Circuits (ICs)

Manufacturer: ABLIC U.S.A. Inc.
Short Description: IC REG LINEAR 1.8V 300MA SOT23-5
More Detail: Linear Voltage Regulator IC Positive Fixed 1 Outpu...
DataSheet: S-1137B18-M5T1U datasheetS-1137B18-M5T1U Datasheet/PDF
Quantity: 1000
3000 +: $ 0.22403
Stock 1000Can Ship Immediately
$ 0.25
Specifications
Current - Output: 300mA
Supplier Device Package: SOT-23-5
Package / Case: SC-74A, SOT-753
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C (TA)
Protection Features: Over Current
Control Features: Enable, Soft Start
PSRR: 70dB (1kHz)
Current - Supply (Max): 65µA
Current - Quiescent (Iq): 1µA
Series: S-1137
Voltage Dropout (Max): 0.42V @ 300mA
Voltage - Output (Max): --
Voltage - Output (Min/Fixed): 1.8V
Voltage - Input (Max): 5.5V
Number of Regulators: 1
Output Type: Fixed
Output Configuration: Positive
Part Status: Active
Packaging: Tape & Reel (TR) 
Description

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Introduction

The S-1137B18-M5T1U is a linear voltage regulator from the series of PMIC (Power Management Integrated Circuit) Voltage Regulators. This series of voltage regulators is designed for applications that require reliable precision power control and provide a wide range of features and benefits such as low power consumption and high “catch” voltage. This article introduces the application field and working principle of S-1137B18-M5T1U linear voltage regulator.

Applications

The most common applications of S-1137B18-M5T1U are in computers, medical devices, communications equipment, automotive systems and industrial applications. Additionally, the S-1137B18-M5T1U can be used to provide regulated output voltages for digital logic circuits in all kinds of electronic systems. It offers reliable voltage regulation for low power applications with "catch" voltage range of 6V to 12V. It also operates at very low quiescent current of 2.2mA at 12V input and its adjustable data includes ±2.5% voltage accuracy and over-temperature monitoring.

Working Principle

The S-1137B18-M5T1U linear voltage regulator features a p-n-p open collector output stage, which enables the high-side output voltage to be adjusted. The voltage regulator’s output voltage is set by an external resistor divider at the ADJ pin. This resistor divider network sets the feedback voltage of the voltage regulator, which is then compared to an internal reference voltage. If the voltage signal at the ADJ pins is higher than the reference voltage, the output signal is decreased until the feedback signal at the ADJ pins is equal to the reference voltage. The S-1137B18-M5T1U also features current limit and protection circuitry for overload, over temperature, input under voltage and output over voltage protection. The current limit circuit is active only when the load current exceeds the set threshold and is programmable from 2A~7A. The over temperature protection feature typically begins active at 150°C and will shut down the output at 170°C. Furthermore, the input under voltage protection typically begins active at 8.5V, and the output over voltage protection begins active at an input voltage of 12V.

Conclusion

The S-1137B18-M5T1U voltage regulator provides high precision power control, low power consumption, and protection features ideal for a wide range of applications. It is designed to allow users to regulate the output voltage to meet the requirements of different applications. The working principle of this voltage regulator centers around a p-n-p open collector output stage and a resistor divider to adjust the feedback voltage and internal reference voltage.

The specific data is subject to PDF, and the above content is for reference

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