ST75C185BDR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Transceiver
Protocol:	RS232
Number of Drivers/Receivers:	3/5
Duplex:	Full
Receiver Hysteresis:	1.1V
Data Rate:	--
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SO
Base Part Number:	ST75C185

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• Introduction

ST75C185BDR is a low-power, low-dropout (LPLDO) voltage regulator designed for battery-powered applications. It is specially designed for high efficiency and fast transient response over the full temperature range, from -40°C to +85°C. With a maximum output current of 75mA, the ST75C185BDR can provide a wide range of output voltages from 1.8V to 5.5V with less than 5% variation over line and temperature range. The ST75C185BDR is suitable for powering circuits requiring very low quiescent current, such as clock and signal conditioning circuits, as well as circuits that require very low power consumption and low dropout, such as microprocessors.

• Application Field

The ST75C185BDR is targeted at power supplies for cellular phones, PDAs notebooms and other battery-powered devices. It provides a cost-effective solution for battery management systems. The device allows current-saving regulation over a wide voltage range and finds application in a variety of high-current and low-current battery powered applications, such as in cell phones, PDAs and other hand-held devices. The device also finds application in other low-current, high-efficiency and fast transient response battery management system application areas, such as clock and signal conditioning circuits, as well as low-power and low dropout circuits, such as microprocessors. The use of the device in industrial and automotive applications such as renewable energy systems,lighting, LED drivers and automotive powertrain is also as feasible.

• Working Principle

The ST75C185BDR is a CMOS voltage LPLDO (Low-Power Low-Dropout) regulator with a maximum output current of 75mA. The device provides excellent regulation over a wide temperature range with very low power consumption and fast transient response. The regulator is equipped with a low-power shutdown mode, making it a perfect choice for applications where low-power consumption is essential. The ST75C185BDR is based on a CMOS process which gives it superior current drive capabilities compared to conventional LPLDO devices. The device features a wide input voltage range of 2V to 8V and provides a full range of adjustable output voltages ranging from 1.8V to 5.5V with a ± 5% variation over the entire line, temperature and load range. The device also features a low-noise, low-power current-limiting protection circuit that ensures the regulator will not be overloaded. The ST75C185BDR provides excellent regulation capability, fast transient response and low dropout voltage. The device also features a low-power shutdown mode, making it suitable for battery-powered applications. The ST75C185BDR is equipped with a range of innovative protection features such as reverse current protection, overvoltage protection, undervoltage lockout and overtemperature protection, making it an ideal choice for battery-powered applications.

• Conclusion

The ST75C185BDR is a CMOS voltage LPLDO (Low-Power Low-Dropout) regulator with a maximum output current of 75mA. The device is designed for low-power, high-efficiency and fast transient response over the full temperature range applications. The device features a wide input voltage range of 2V to 8V, adjustable output voltages ranging from 1.8V to 5.5V and low-noise, low-power current-limiting protection. The ST75C185BDR also provides reverse current protection, overvoltage protection, undervoltage lockout and overtemperature protection. The ST75C185BDR is ideal for cellphones, PDAs, hand-held devices and other battery-powered applications.

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