LTC3646EDE#PBF

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The LTC3646EDE#PBF is a non-synchronous, monolithic step-down DC-DC constant frequency current mode switching regulator with integrated high and low side FETs from Linear Technology. It is suitable for a wide range of voltage and power applications, from 2.5V to 6V input voltages, with output current up to 2A. It has integrated fast charging capabilities for vital power applications such as Li-Ion and Li-polymer batteries. The LTC3646EDE#PBF is a highly versatile regulator that can be used in a wide range of applications such as automotive, industrial, and consumer electronics.

The LTC3646EDE#PBF is an ideal PMIC-Voltage Regulator-DC DC Switching Regulator and is designed to provide enhanced efficiency, high efficiency, fast transient and line regulation, low output ripple and noise, and output current limitation. It employs a current-mode topology with a constant switching frequency and internal compensation, providing simple external components and flexibility in programming the output voltage. It supports wide input voltage range of 0.8V–6V and output voltage of 0.6V–5.5V, with output current up to 2A. It employs internal high-side and low-side MOSFETs for power conversion.

The LTC3646EDE#PBF supports programmable switching frequencies that vary from 200kHz to 900kHz and allows low duty cycle operation to minimize peak inductor current. It offers independent or single input voltage operating modes, with peak current mode control, allowing operation with low inductor current ripple. It also features dynamic voltage scaling (DVS) for maximizing efficiency from light to full load. Other features include power good indicator, powerOK latch, over-temperature protection and thermal limit current level, short-circuit protection, and input under-voltage lockout.

The package of the LTC3646EDE#PBF is a Lead-Free / RoHS compliant, 20-lead (3mm very thin type) SSOP package. It provides greater flexibility in the choice of components, allowing optimized circuit designs and superior thermal performance. It has a junction temperature range of -40°C to 125°C and thermal resistance of 0.45°C/W.

In summary, the LTC3646EDE#PBF is a versatile DC-DC switching regulator suitable for a wide range of voltage and power applications. It employs a current-mode topology with a constant switching frequency, and allows low duty cycle operation to minimize peak inductor current. It supports a wide input voltage range of 0.8V–6V and output voltage of 0.6V–5.5V, with output current up to 2A. It can be used in a wide range of applications such as automotive, industrial, and consumer electronics. It is housed in a 20-lead 3mm very thin type SSOP package with a junction temperature range of -40°C to 125°C and thermal resistance of 0.45°C/W.

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