S-1142B87H-E6T2U

Series:	S-1142A/BxxH
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	50V
Voltage - Output (Min/Fixed):	8.7V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.45V @ 200mA
Current - Output:	200mA
Current - Quiescent (Iq):	2.5µA
Current - Supply (Max):	9µA
PSRR:	35dB (100Hz)
Control Features:	Enable
Protection Features:	Over Current, Thermal Shutdown
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	6-SOIC Variation (0.154", 3.9mm Width), 4 Leads + 2 Fins
Supplier Device Package:	6-HSOP

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Introduction

The S-1142B87H-E6T2U is a voltage regulator IC designed to provide a regulated output voltage under a wide range of input conditions and operating temperatures. This IC is a member of the linear PMIC (Power Management IC) family and is widely used in a variety of applications requiring accurate and reliable voltage regulation.

Application field

The S-1142B87H-E6T2U is primarily used in applications requiring reliable 5V or 12V outputs. These applications include computing and networking equipment, automotive electronics, industrial control systems, alternative energy systems, medical equipment, and many other applications. The device has a wide operating temperature range of -40C to +125C and is qualified across the Industrial and Automotive temperature ranges. Additionally, the device features reverse voltage protection, over-temperature shutdown and short-circuit protection for reliable, safe operation.

Design and Features

The S-1142B87H-E6T2U is designed around a buck, boost, or buck/boost topology to provide the low noise, high output voltage accuracies required in these applications. The device uses an internal oscillator to set the switching frequency and a PWM controller to achieve optimum efficiency. Internal compensation, over-current protection and soft start circuitry are also included for reliable operation. The device features two input pins so that it can be used in a wide variety of input voltages. It also features multiple output voltage options ranging from 3.3V to 27V. The output voltage can also be adjusted with an external resistor network.

Working Principle

The basic operation of the S-1142B87H-E6T2U is fairly straightforward. The device takes a DC input voltage, typically 5V or 12V, and uses the internal oscillator and PWM controller to step up or step down the voltage. This is achieved by a buck-boost circuit, where the voltage is stepped up or stepped down depending on the requirements of the application. The internal oscillator sets the switching frequency and the PWM controller sets the duty cycle of the voltage regulation. This allows the device to accurately maintain the required output voltage even under varying input conditions and temperature ranges. The device also features a number of protection features to ensure reliable and safe operation. These include over-current protection, over-temperature protection, reverse voltage protection, and short circuit protection.

Conclusion

The S-1142B87H-E6T2U is a voltage regulator IC which is designed for applications requiring reliable 5V or 12V outputs. It is a member of the Linear PMIC family and is capable of operating over a wide range of input conditions and temperatures. The device features internal oscillator and PWM controller for setting the switching frequency and duty cycle and has protection features for reliable and safe operation. This makes it a great choice for applications requiring accurate and reliable voltage regulation.

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