LT1129IT#PBF

Current - Output:	700mA
Base Part Number:	LT1129
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	64dB (120Hz)
Current - Supply (Max):	90mA
Current - Quiescent (Iq):	70µA
Series:	--
Voltage Dropout (Max):	0.7V @ 700mA
Voltage - Output (Max):	30V
Voltage - Output (Min/Fixed):	3.8V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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LT1129IT#PBF is an advanced ultra low power CMOS low dropout (LDO) voltage regulator. It is a three-terminal adjustable regulator that is specifically designed to provide a regulated voltage over a wide range of supply voltages. This device is capable of supplying up to 1.5A load current and offers a wide range of adjustable output voltage. The LT1129IT#PBF is well suited for low power systems that must operate over a wide range of input voltages.Application FieldThe LT1129IT#PBF is suitable for a wide range of applications, including battery operated systems, digital signal processing, automotive systems and portable instrumentation. It is ideal for low power systems as well as precision systems that require a low output noise and error. The low dropout voltage is suitable for use in applications where the input and output voltages are closely matched or where the input voltage is very close to the output voltage. The device has excellent thermal properties that allow it to be used in high power applications.Working PrincipleThe LT1129IT#PBF is a three-terminal adjustable regulator that is specifically designed to provide a regulated voltage over a wide range of supply voltages. It uses an on-chip bandgap reference and a current mirror to provide an output accuracy of ±2.5%. The output voltage of the device can be adjusted by a single external pin, making it ideal for applications that require precision adjustment of the output voltage. The LT1129IT#PBF has a low quiescent current of 1 μA, making it suitable for battery operated systems. The LT1129IT#PBF has a low noise, high ripple rejection and excellent line and load transient response. It is also capable of providing up to 1.5A load current. The device provides an adjustable output voltage from 1.2V to 30V, making it suitable for a variety of applications. The LT1129IT#PBF provides protection against several potential areas of damage due to over current and over voltage. The thermal protection circuitry shuts down the device if the junction temperature exceeds 160°C. The output current limit of the device is set to 1A and the maximum output power is limited to 45W.ConclusionThe LT1129IT#PBF is an advanced ultra low power CMOS low dropout (LDO) voltage regulator which is well suited for use in low power systems. The device provides an adjustable output voltage from 1.2V to 30V and is capable of providing up to 1.5A load current. The device has a low noise, high ripple rejection and excellent line and load transient response. It is also protected against over current and over voltage. The LT1129IT#PBF is an excellent choice for applications that require a low power and precise voltage regulation.

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