Frequency - Switching:	Up to 400kHz
Base Part Number:	LTC1143
Supplier Device Package:	16-SOIC
Package / Case:	16-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:	No
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	3.5 V ~ 16 V
Output Phases:	1
Number of Outputs:	2
Topology:	Buck, Buck-Boost
Output Configuration:	Positive
Function:	Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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PMIC - Voltage Regulators - DC DC Switching Controllers

The LTC1143LCS#PBF is a device from Linear Technology Corporation, which is a leading supplier of analog-intensive, mixed-signal integrated circuits. This part is an ideal combination of low-voltage synchronous buck (step-down) and boost (step-up) DC-to-DC controllers and is the perfect solution for high-efficiency power management. It is suitable for a variety of applications in battery-powered systems, including smartphones, tablets, wearables and other ultra-portable devices.The LTC1143LCS#PBF features a high-efficiency, low-output voltage operation with dual internal oscillators and an adjustable skip cycle option to extend battery life. The device operates from an input voltage range between 2.9V to 5.5V. It can drive N-channel MOSFETs up to 1.5A and can deliver regulated output voltages down to 0.6V. It has a low operating current of just 250μA which is essential for applications with tight operating budgets. The device also has an adjustable soft-start feature for reducing in-rush current at turn-on. The LTC1143LCS#PBF includes a low-reverse current protection circuit that prevents reverse current from flowing back into the system and can be used for higher-precision power supplies requiring very low residual current. It also has several protection features like thermal protection, back stage fault protection and impedance sensing protection. Its compact MSOP-10AP package ensures a small system formfactor while providing superior thermal performance. The LTC1143LCS#PBF is designed to simplify power design requirements with reliable fault protection features and a flexible control algorithm. It has a wide temperature range of −40°C to 85°C making it suitable for a variety of applications. The device also provides excellent transient response without requiring external loop filter components, making it suitable for conversion of a wide range of input sources. It supports a maximum switching frequency of 300kHz which helps to reduce part count and board area. Overall, the LTC1143LCS#PBF is an ideal fit for applications requiring simple power conversion with superior efficiency, system protection and flexible operation. It not only has excellent performance but also helps to reduce system size, cost and complexity. It is an ideal DC-to-DC controller for a wide range of applications, especially those where cost, size and efficiency are important considerations.

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