LT3507AEFE#PBF

LINEAR TECHNOLOGY  LT3507AEFE#PBF  芯片, 降压稳压器, 三路, 带LDO, 38TSSOP

The is a triple Monolithic Step-Down Regulator with internal power switches and a low dropout regulator. The switching converters are step-down converters capable of generating one 2.7A output and two 1.8A outputs. All three converters are synchronized to a single oscillator. The 2.7A output runs with opposite phase to the other two converters, reducing input ripple current. Each regulator has independent shutdown and soft-start circuits and generates a power good signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. The switching frequency is set with a single resistor yielding a range of 250kHz to 2.5MHz. The high switching frequency allows the use of small inductors and capacitors resulting in a very small triple output supply. The constant switching frequency, combined with low impedance ceramic capacitors, results in low, predictable output ripple.

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Low dropout linear regulator with external transistor

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Antiphase switching reduces ripple

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Independent run, tracking/soft-start and power good indicators ease supply sequencing

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Uses small inductors and ceramic capacitors

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User programmable overvoltage and undervoltage lockouts