LT1939IDD

Voltage/Current - Output 3:	--
Supplier Device Package:	12-DFN (3x3)
Package / Case:	12-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	3 V ~ 25 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	0.8 V ~ 24.25 V, 1A
Voltage/Current - Output 1:	0.8 V ~ 24.25 V, 2A
Frequency - Switching:	500kHz ~ 2.4MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) (1), Linear (LDO) (1)
Part Status:	Obsolete

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LT1939IDD is a high-efficiency, low-noise, current-mode, voltage-regulating IC designed for use in a variety of power management applications. It offers both linear and switching power regulation to meet the needs of a wide range of applications.The LT1939IDD is a versatile device that provides regulated and adjustable output voltages over a wide range of operating conditions. It is designed to operate with a combination of an external power MOSFET and an external sense resistor for controlling the load current. The output voltage can be set to a maximum of 1.5V to 20V and the current limit is adjustable from 1A to 8A.The LT1939IDD uses a combination of linear and switching regulators to provide excellent efficiency, low noise and an adjustable output voltage. The linear regulator performs the task of converting the input voltage to a lower voltage while the switching regulator further steps down the voltage to the desired output voltage. The switching regulator also increases efficiency, making it more efficient than other linear regulator designs.In addition to its high efficiency, the LT1939IDD also offers excellent EMI performance. It incorporates a low-odd-order harmonic suppression circuit that helps minimize potential EMI problems and a high-precision compensation circuit to maintain output voltage accuracy and dynamic load response. The device can also accept inputs from a wide variety of power sources, including batteries, ac adapters and dc sources.The LT1939IDD also features sophisticated protection mechanisms. It offers over-voltage protection, under-voltage protection and overtemperature protection, making it ideal for use in safety-critical systems.The LT1939IDD is a highly versatile and efficient voltage regulating IC. It offers a wide range of output voltages and current limits, and can accept inputs from various power sources. It also offers low-odd-order harmonic suppression, over-voltage protection, under-voltage protection and overtemperature protection. These features make it an excellent choice for power management applications that require excellent performance, efficiency, and safety.

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