3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10
DescriptionThe ST1S10 is a step-down DC-DC converter with inhibit function optimized for powering high voltages in LCD applications and low voltage, digital core HDD applications. It replaces the high dissipation is a problem. It provides up to 3 A over an input voltage range of 2.5 V to 18 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as the resistor divider to set the output voltage value. The current mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator can work in burst mode automatically. The device can operate in PWM mode with a fixed frequency or synchronized to an external frequency. It SYNC pin is connected to ground or a fixed voltage (less than 5.5 V), and can synchronize the switching frequency between 400 kHz to Features Input voltage range: 2.5 V to 18 VMax Iout : 3 AHigh internal switching frequency : 900 kHz PWM mode operation with a fixed frequency or synchronized to an external frequency between 400 kHz and 1.2 MHzInhibit pin availableQuiescent current : < 6 A in inhibit stateDescriptionThe ST1S10 is a step-down DC-DC converter with inhibit function optimized for powering high voltages in LCD applications and low voltage, digital core HDD applications. It replaces the high dissipation is a problem. It provides up to 3 A over an input voltage range of 2.5 V to 18 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as the resistor divider to set the output voltage value. The current mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator Data BriefFor further information contact y
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SO-8, MLP4x4, DC-DC, 637L1, ST1S10, 22R1123354-8
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