S-8340/8341 Series
www.
ablicinc.
com © ABLIC Inc.
, 1999-2010
STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING
REGULATOR CONTROLLER
Rev.
4.
0_02
The S-8340/8341 Series is a CMOS step-up switching
regulator controller which mainly consists of a reference voltage source, oscillation circuit, error amplifier, phase compensation circuit, PWM control circuit (S-8340 Series), and PWM/PFM switching control circuit (S-8341 Series).
Since the oscillation frequency is a high 300 kHz or 600 kHz, with the addition of a small external part, the S-8340/8341 Series functions as a highly efficient step-up switching
regulator with a high output current.
The speed of the output stage is enhanced s...