| Description & Applications | High-efficiency Step-up Switching Regulators with Built-in Power MOSFET •BD8158FVM is the 1-channel step-up switching regulator which builds in the low voltage FET. Input voltage is 2.1V to 5.5V(BD8158FVM) 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 2.1 V to 5.5 V (BD8158FVM, providing the low power input) •Switching frequency is variable as 600 kHz/1,200 kHz. •Built-in 0.25 Ω power switch •Feedback voltage 1.245 1% •Built-in under-voltage lockout protection circuit •Built-in overcurrent protection circuit •Built-in thermal shutdown circuit |