▪ 7V to 40V input supply range
▪ Up to 300mA output current
▪ IQ = 4μA at 40V, at no load conditions, switching
▪ IQ = 2.5μA at 40V at no load and no switching
conditions
▪ RAA211403 is fixed 3.3V VOUT, RAA211405 is
fixed 5V VOUT
▪ Minimum on-time of 75ns
▪ Variable frequency operation, frequency
programmed by external inductor (4.7μH to 15μH)
▪ Pre-bias, monotonic, and smooth start-up
▪ Protections: Overcurrent (OC) Limit, input
Undervoltage Lockout (UVLO), Over-Temperature
Protection (OTP), output Overvoltage Protection
(OVP)
▪ Accurate EN threshold
▪ Package: TSOT23-5 (2.9mm×1.63mm)
Programmable Feature
▪ Inductor: Change switching frequency
▪ Enable: Turn on/off with external logic or connect
EN to VIN