Features
• Wide input voltage range of 3V to 40V
• Synchronous operation for high efficiency
• Integrated high-side and low-side NMOS devices
• Selectable PFM or PWM mode at light loads
• Internal fixed frequency (500kHz) or adjustable
switching frequency (300kHz to 2MHz)
• Continuous output current up to 1.1A
• Internal or external soft-start
• Power-good and enable functions
• 500mA low dropout linear regulator
• 1.8V to 6V input
• ±1.8% VOUT accuracy ensured over line, load, and
TJ = -40°C to +125°C
• Very low 45mV dropout voltage at VOUT = 2.5V
• Excellent PSRR over wide frequency range
• Programmable output soft-start time
• Very fast transient response
• Current limit protection