S-8540 Datasheet | Seiko Instruments

Rev.3.2_00 .. STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8540/8541 Series The S-8540/8541 Series is a family of CMOS stepdown switching regulator controllers with PWM control (S-8540 Series) and PWM/PFM switchover control (S8541 Series). These devices consist of a reference voltage source, oscillation circuit, an error amplifier, phase pensation circuit, PWM control circuit, current limit circuit. A high efficiency and large current switching regulator is realized with the help of small external ponents due to the high oscillation frequency, 300 kHz and 600 kHz. The S-8540 Series provides low-ripple voltage, high...