LTC3370IUH#PBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LTC3370
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	2A
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	4
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LTC3370IUH#PBF switching regulator is a highly efficient, 3-step, DC-to-DC, step-up converter with internal power MOSFETs. This switching regulator has a 1.5 MHz fixed frequency, current mode architecture. It can generate up to 3A of output current and is ideal for driving charge pumps, LEDs, and other types of linear and switch-mode regulators.The LTC3370IUH#PBF switching regulator has two operating modes, pulse-skipping mode and pulse-width modulation (PWM) mode. Pulse-skipping mode provides low quiescent current and high efficiency over a wide input voltage range and is suitable for noise-sensitive applications, such as for driving LEDs. The PWM mode provides fast transient response and good line and load regulation. For both modes, the switching frequency is adjustable up to 1.5 MHz for optimal tradeoff between efficiency and current ripple.Features of the LTC3370IUH#PBF switching regulator include adjustable output voltage from 0.6V to 4.5V, input voltage range from 0.9V to 6V, 1.5 MHz fixed frequency, current-mode architecture, low quiescent current, pulse-skipping mode, PWM mode, over-current protection, and an adjustable current limit. In addition, the device can be configured to operate in forced PWM mode to reduce noise at light loads.The LTC3370IUH#PBF switching regulator is ideal for use in applications such as LED drivers, portable op amps, charge pumps, and LCD power supplies. It is available in a low profile (1.2 mm) 5-lead TSOT-23 package, making it suitable for both professional and consumer applications.The key to understanding how the LTC3370IUH#PBF switching regulator works is in its simple internal design. At its core, the device is enclosed in an internal P-channel MOSFET (PMOS) and an external N-channel MOSFET (NMOS). When the internal P-channel MOSFET is conducting current from the input to the output, the external NMOS is off and vice versa. This allows for bidirectional current conduction.Depending on the pulse-skipping mode or PWM mode selected, the device will either use its internal clock to control the switching speed, or the PWM signal to control the switching speed. As the device switches between the two MOSFETs, the voltage is increased or decreased accordingly to regulate the output.In addition, the LTC3370IUH#PBF switching regulator has a number of features and functions to ensure smooth and efficient operation. The device includes an adjustable over-current protection circuit which limits the MOSFETs current when the current passes a certain threshold. It also prevents over-shooting during a transient load condition.The LTC3370IUH#PBF switching regulator also has adjustable soft-start, current limit and thermal regulation. The current limit feature helps to prevent damage to the internal components, while the thermal regulation helps to reduce heat dissipation during operation.In conclusion, the LTC3370IUH#PBF switching regulator is a highly efficient, 3-step, DC-to-DC, step-up converter with internal power MOSFETs. It has a 1.5 MHz fixed frequency, current mode architecture and can generate up to 3A of output current. It is ideal for driving charge pumps, LEDs, and other types of linear and switch-mode regulators. The device is also capable of operating in either pulse-skipping or PWM mode, and includes several additional features to ensure smooth and efficient operation. As such, it is an ideal choice for various types of applications.

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