LT1945EMS#TRPBF

Voltage - Output (Min/Fixed):	±1.23V
Base Part Number:	LT1945
Supplier Device Package:	10-MSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	--
Current - Output:	250mA (Switch)
Voltage - Output (Max):	±34V
Series:	--
Voltage - Input (Max):	15V
Voltage - Input (Min):	1.2V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Boost, SEPIC
Output Configuration:	Positive and Negative (Dual Rail)
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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<p>LT1945EMS#TRPBF is a wide input voltage range synchronous buck current mode DC/DC converter controller with output current monitor. It accepts the input voltage range of 4.5V to 20V and delivers a 12V output with up to 4A of output current. It is suitable for a wide range of applications, including DC/DC power supplies and battery chargers.</p><p>The LT1945EMS#TRPBF is a highly integrated device, which combines a voltage mode PWM control IC, an adjustable output voltage sense amplifier and a current-mode control circuitry in one package. It features a low duty-cycle drive capability and high peak current capability, making it ideal for high efficiency and fast transient response applications. It offers excellent power efficiency and fast transient response, while still offering the ease of programmability and reliability.</p><p>The LT1945EMS#TRPBF application field includes DC/DC power supplies, battery chargers, switch mode power supplies, industrial power supplies, motor control, and medical devices. The device is designed for a variety of applications and can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM).</p><p>The working principle of the LT1945EMS#TRPBF is based on a synchronous buck converter featuring voltage mode control. The feedback voltage from the output is fed back to an external error amplifier through the programmable internal reference. This error amp adjusts the input voltage to the output voltage, and the output current is monitored using a sense amplifier.</p><p>The device features a high switching frequency of up to 1 MHz, and the adjustable output voltage allows for a wide range of applications. The LT1945EMS#TRPBF also has a built-in low side current sense circuit, which provides an accurate output current regulation. The internal dead-time control and over-current protection features improve the safety and reliability of the device.</p><p>The LT1945EMS#TRPBF is designed for a variety of applications where fast transient response, high efficiency, and reliability are needed. With its highly integrated design, the LT1945EMS#TRPBF is the ideal choice for a wide range of DC/DC applications.</p>

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