LV5044V-TLM-E

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	2
Output Phases:	2
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 16 V
Frequency - Switching:	250kHz ~ 1.1MHz
Duty Cycle (Max):	82%
Synchronous Rectifier:	Yes
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Current Limit, Power Good, Soft Start
Operating Temperature:	-20°C ~ 85°C (TA)
Package / Case:	30-LSSOP (0.220", 5.60mm Width)
Supplier Device Package:	30-SSOP
Base Part Number:	LV5044

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LV5044V-TLM-E is a step-down DC / DC controller for automotive and other applications. It is based on a state-of-the-art MOSFET power switch design, which provides excellent load and line transient responses. The controller can operate in a wide input voltage range of 6 to 75V, and provides multiple levels of output current limiting. Its built-in line undervoltage lockout (UVLO) circuit can be used to prevent the lV5044V-TLM-E from operating in an unregulated state at light or no-load conditions.

Application Field

The LV5044V-TLM-E is designed for automotive and related applications such as infotainment systems and lighting control. It is also suitable for applications in handheld and communications equipment, power adapters, motor control, and general purpose DC/DC conversion.

Working Principle

The LV5044V-TLM-E utilizes a current mode switching topology. This topology uses a comparator to compare the feedback voltage from the output voltage divider with an internally generated error voltage. The resulting differential voltage is then amplified and integrated to control the gate of the low side NMOS switch. This causes the switch to turn on and off, maintaining the desired output voltage.In addition, the LV5044V-TLM-E provides advanced protections for load and line transient conditions. Its built-in soft-start circuit limits the inrush current on power-up and ensures a smooth transition from startup to steady state operation. Its soft-stop feature reduces the surge current upon shutdown. The controller can also be configured to operate in continuous or discontinuous conduction modes, depending on the application requirements.The LV5044V-TLM-E is suitable for a wide range of input and output voltage applications, and provides advanced protections and control features. It is an ideal solution for automotive and other applications that require reliable, efficient and low cost power conversion.

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