LB1860M-TLM-H Integrated Circuits (ICs)

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LB1860M-TLM-H is a power management integrated chip (PMIC) designed for motor drives, controllers, and other various applications.

LB1860M-TLM-H operates with a logic voltage range of 1.8V to 5.5V and a power input voltage range of 5V to 18V. It supports high-efficiency operation at up to 15A and 200KHz switching frequencies.

The chip is composed of power control, protection, and monitoring subsystems. The power control subsystem allows variable DC current and voltage control. The current and voltage limits can be adjusted through external resistor selection. An internal charge pump provides the high-side gate drive for external switching components. The PCB layout and shield plane design can help reduce the radiated emission due to high-frequency switching.

The protection subsystem features over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), short circuit protection (SCP), and thermal protection (TP). The OCP can be configured with the external resistor programming. UVP, SCP, and TP, can be enabled or disabled through pins selection.

The monitoring subsystem of LB1860M-TLM-H helps detect and monitor the output voltage and current during operation. The enable pin can detect a VDD under-voltage, output over-voltage, shut-down detection, and enable/disable protection. The thermal protection reduces the load current when the load temperature is higher than the set limit.

LB1860M-TLM-H features excellent thermal performance with a low junction-to-case thermal resistance of 5.4 K/W. With its compact 8-pin package, the device is suitable for numerous applications, such as computer power supplies, DC motor drives, and motor control systems.

To summarize, the LB1860M-TLM-H is a PMIC designed for motor controllers and is composed of power control, protection, and monitoring subsystems. With its wide power and logic voltage range, it is suitable for numerous applications. Its internal charge pump, protection, and monitoring subsystems help ensure system reliability and stability.

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