S-8540/8541 Series
www.
ablicinc.
com © ABLIC Inc.
, 2000-2010
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING
REGULATOR CONTROLLER
Rev.
4.
0_02
The S-8540/8541 Series is a family of CMOS step-down switching
regulator controllers with PWM control (S8540 Series) and PWM/PFM switchover control (S-8541 Series).
These devices consist of a reference voltage source, oscillation circuit, an error amplifier, phase compensation circuit, PWM control circuit, current limit circuit.
A high efficiency and large current switching
regulator is realized with the help of small external components due to the high oscillation frequency, 300 kHz and 600 kHz.
The S-8540 Series provides low-ripple vo...