S-1132B40-U5T1G

Current - Output:	300mA
Supplier Device Package:	SOT-89-5
Package / Case:	SOT-89-5/6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	65dB (1kHz)
Current - Supply (Max):	40µA
Current - Quiescent (Iq):	1µA
Series:	S-1132
Voltage Dropout (Max):	0.15V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The S-1132B40-U5T1G is a low-noise, step up DC-DC converter with integrated LDOs (low drop out) and power switches that can be used in a variety of linear voltage regulator applications. It is designed to provide an adjustable output voltage range of 1.0V to 5.0V, with an input voltage range of 2.5V to 5.5V. The device has a typical output current of 2A, a maximum output current of 3A, and a switching frequency of 2.5MHz.

Application Field

The S-1132B40-U5T1G is commonly used in communication, automotive, and portable battery applications. It is ideal for powering high current applications where space is limited. It can be used for microprocessor core voltage regulation, to provide output for low-power wireless communication methods, and for powering other devices in portable applications. The device can also be used in switch mode power supplies, DC-DC converters, AC-DC converters, and battery charging applications. It features a diode emulation mode, which greatly reduces switching noise and allows for an ultra-low quiescent current. Its high efficiency allows for power saving and heat reduction in applications.

Working Principle

The S-1132B40-U5T1G uses a hysteretic voltage regulator topology, which allows for a fast, reliable, efficient, and low-cost voltage regulation solution. In hysteretic mode, the converter constantly monitors the output voltage, and when the output voltage reaches the lower limit, the switch is enabled and the converter steps up the input voltage until the output voltage reaches the upper limit, at which point the switch is disabled. This process is repeated continuously until the output voltage is in the required range. The device also features a synchronized mode, which allows it to work in conjunction with an external oscillator or a clock signal. In synchronous mode, the hysteretic loop is clocked at the external clock frequency, allowing for higher switching frequencies and lower power consumption.

Conclusion

The S-1132B40-U5T1G is a high-efficiency, low-noise, step up DC-DC converter with integrated LDOs and power switches. It is designed to provide an adjustable output voltage range of 1.0V to 5.0V, with an input voltage range of 2.5V to 5.5V and a maximum output current of 3A. It is commonly used in communication, automotive, and portable battery applications where space is limited. The device features a hysteretic voltage regulator topology and a synchronized mode, which allows it to work in conjunction with external oscillators or clock signals.

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