SNVSAE4C July 2015 – October 2018 LM5160-Q1
The LM5160-Q1 contains an internal high-voltage linear regulator with a nominal output voltage of 7.5 V (typical). The VCC regulator is internally current limited to 30 mA (minimum). This regulator supplies power to internal circuit blocks including the synchronous FET gate driver and the logic circuits. When the VCC voltage reaches the undervoltage lockout (VCC(UV)) threshold of 3.98 V (typical), the IC is enabled. An external capacitor at the VCC pin stabilizes the regulator and supplies transient VCC current to the gate drivers. An internal diode connected from VCC to BST replenishes the charge in the high-side gate drive bootstrap capacitor when the SW voltage is low.