LTC1148CS#TRPBF

Frequency - Switching:	Up to 250kHz
Base Part Number:	LTC1148
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Current Limit, Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	3.5 V ~ 20 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LTC1148CS#TRPBF

The LTC1148CS#TRPBF is a device that combinesDC- DC switch mode control, system monitoring and protection functions to form a complete Power Management IC (PMIC).The device is part of a family of voltage regulators and DC to DC controllers from Linear Technologies, geared towards low power designs in mobile applications. It integrates a 500 kHz pulse-width modulation (PWM) controller, a system monitor and four independent linear regulators for total power control.

Application Field

The LTC1148CS#TRPBF is a high performance and highly welcomed DC-DC controller that can be applied for industrial applications. The device is well-suited for automotive power systems, cooling fans, inter-integrated circuit (I2C) bus systems, point-of-load/point-of-use converters, portable medical systems and battery chargers, instrumentation and industrial food service equipment.The device is specifically designed to provide maximum performance in an automotive or industrial applications and is able to sustain a large number of environmental conditions such as extreme temperatures, vibrations, shocks, dust and other hostile environments.

Working Principle

The LTC1148CS#TRPBF can be powered by either a standard high voltage battery or an AC adapter. Its power and system monitor circuits provide constant feedback and battery protection through current measurement and voltage monitoring.The embedded 500kHz PWM controller generates a high-frequency, adjustable pulse-width modulation waveform that is used as the basis for controlling the switching frequency of the external power devices. This helps in optimizing the power transfer efficiency. The four integrated linear regulators are capable of delivering in standard off-the-shelf chipsets, allowing designers flexibility in power management design. They help to reduce power losses and costs by using fewer discrete components. Additionally, the device features a sleep mode, which enables extremely low power consumption. The protection features provided by the PWM controller are designed to prevent current or voltage overshoot or undershoot or overvoltage or over-temperature conditions. It also provides warning signals through the Fault pin anytime a fault is detected.

Conclusion

The LTC1148CS#TRPBF is an excellent PMIC solution for low power designs. Its combination of DC-DC switching control, system monitoring, and four integrated linear regulators makes it ideal for any industrial or automotive applications. The device provides protection against current or voltage overshoot or undershoot or overvoltage or over-temperature conditions, while also placing a low burden on power consumption. With its capabilities and features, this device can make a real difference in any design project.

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