Description

50 mA, 60 V, High Efficiency Buck Regulator Features: Input voltage range: 4.5 V to 60 V Adjustable output voltage range: 0.8 V to VIN Factory programmable fixed output voltage options of 3.3 V and 5.0 V Continuous output current up to 50 mA Adjustable peak current limit up to 140 mA Pulse frequency modulation (PFM) control Very high efficiency 90% at VIN = 9 V, VOUT = 3.3 V, IOUT = 10 mA 87% at VIN = 9 V, VOUT = 3.3 V, IOUT = 1 mA Low shutdown current: <4 µA Low quiescent current: 12 µA in sleep mode 100% duty cycle operation Undervoltage lockout (UVLO) No external compensation required Enable input with precision thresholds Programmable soft start Power-good output Thermal shutdown (TSD) protection 8-lead LFCSP package