BD8158FVM are the 1 channel step-up switching regulator which builds in the low voltage FET. Input voltage is 2.1V to 4.0V realizing the low consumption power. High accuracy feedback voltage ±1% is established and the brightness dispersion of TFT-LCD panel is suppressed.
Current mode PWM system Input voltage is 2.5V to 5.5V Switching frequency is variable as 600kHz / 1,200kHz. Built-in 0.25Ω power switch Feedback voltage 1.245±1% Built-in under-voltage lockout protection circuit Built-in overcurrent protection circuit Built-in thermal shutdown circuit