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SS6578
High-Efficiency, Step-Down DC/DC Controller
FEATURES
4V to 18V input
voltage operation.
High-efficiency (up to 95%).
Low quiescent current at 90µA.
Pulse-skipping and pulse-frequency modulation.
Inputs-uncommitted current-sense comparator.
Duty-cycle adjustable.
90KHz to 280KHz oscillator frequency.
Power-saving shutdown mode (8µA typical).
Push-pull driver output.
DESCRIPTION
The SS6578 is a high performance step-down DC/DC controller, designed to drive an external P-channel
MOSFET to generate programmable output
voltages.
Two main schemes of Pulse-Skipping and Pulse-Frequency Modulation are employed to maintain low quiescent current and high conversion efficien...