LT3988EMSE#PBF

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The LT3988EMSE#PBF is a low quiescent current boost DC-DC switching regulator, with high PSRR and low noise. It provides up to 3A output current, over a wide 8V to 28V input range. The regulator has an integrated high side MOSFET and low side MOSFET, as well as excellent thermal performance and low quiescent current. The regulator is optimized for Li-Ion battery powered applications.

Application fields of the LT3988EMSE#PBF include high battery current distribution in mobiles, industrial equipments and automotive, as well as battery backup systems, medium and low voltage power supplies, wireless systems, low electromagnetic interference (EMI) emitters, and home entertainment systems.

The LT3988EMSE#PBF operates with a wide range of input and output voltages, from 2.7V to 28V for the input voltage, and from 0.71V to VIN for the output voltage. The regulator features a high efficiency low dropout voltage mode, allowing it to provide excellent power density along with high efficiency over the full input range. It also features a wide frequency range, up to 1.5MHz, which allows for high efficiency over wide load ranges. The boost converter has a very low quiescent current of just 10uA, and features a programmable peak and valley current limit.

The LT3988EMSE#PBF has a temperature compensated operating input voltage of up to 28V and an adjustable output voltage of up to 28V. It has an integrated control circuit and drivers that allow very fast switching, while the low dropout voltage and high efficiency over the full input voltage range optimize power consumption and performance. The regulator also features a fast dynamic load step response, while the high PSRR and low noise ensure clean outputs when powering noisy loads.

The LT3988EMSE#PBF uses a constant frequency peak current mode architecture for regulating the output. The operating frequency of the switching regulator is directly proportional to the inductor current, and thus is set by an external resistor. The error amplifier monitors the output voltage, control loop and the inductor current sense to regulate the output. The regulator is enabled and disabled through an EN pin.

The LT3988EMSE#PBF works by using a high side and low side MOSFETs to control the voltage and current on the output. When the switch is on, the inductor charges up with current, and the output voltage increases. When the switch is off, the inductor current is discharged and the output voltage decreases. The error amplifier is used to monitor the output voltage, control loop and the inductors current sense to regulate the output. The regulator is enabled and disabled through an EN pin.

The LT3988EMSE#PBF is a low quiescent current and high efficiency DC-DC switching regulator, specifically designed for portable and battery powered applications. It features an integrated high-side and low-side MOSFETs, wide input voltage range of 8V to 28V and adjustable output voltage of up to 28V, wide frequency range up to 1.5MHz, fast dynamic load step response, and up to 3A output current. Its high PSRR, low noise, temperature compensated operating voltage, and programmable peak and valley current limit make it an ideal solution for high battery current distribution in mobiles, industrial equipments, and automotive, as well as battery backup systems, medium and low voltage power supplies, wireless systems, and home entertainment systems.

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