Features
• VIN operating range from 4.0V to 42V
○ Start range: 4.5V to 42V
• Fixed switching frequency: 2.2MHz with optional
pseudo-random spread spectrum
• Three synchronous bucks with internal
compensation and one LDO
○ Buck1 output range: 3.3V to 5.05V
○ Buck2 output range: 1.0V to 3.3V
○ Buck3 output range: 1.0V to 3.3V
○ LDO4 output range: 2.8V to 3.4V
• Output UV/OV thresholds, OTP: ±4%, ±6%, ±8%,
±12%
• OTP power up/down sequence and delay
• Optional output discharge on Buck2, Buck3, and
LDO4
• Current at VIN input under shutdown: <1μA typical
• Protection features
○ Input voltage UVLO
○ Output OV/UV
○ Positive and negative current limits on bucks
○ Overcurrent protection on internal and output
LDOs
○ Fail-safe controller
○ CRC of OTP registers
○ OTP hiccup or latch-off fault response