LM27761DSGT Description
The LM27761DSGT low-noise regulated switched-capacitor voltage inverter delivers a very low-noise adjustable output for an input voltage in the range of 2.7 V to 5.5 V. The low-cost capacitor LM27761DSGT is used in the application solution to provide up to 250 mA of output current. The regulated output for LM27761DSGT is adjustable between -1.5 V and -5 V. The LM27761DSGT operates at a 2-MHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 370 μA (charge-pump power efficiency greater than 80% with most loads) and a 7-μA typical shutdown current, the LM27761DSGT provides ideal performance when driving power amplifiers, DAC bias rails, and other high-current, low-noise voltage applications.
LM27761DSGT Features
Inverts and Regulates the Input Supply Voltage
Low Output Ripple
Shutdown Lowers Quiescent Current to 7 μA(Typical)
Up to 250-mA Output Current
2.5-? Inverter Output Impedance, VIN= 5 V
±4% Regulation at Peak Load
370-μA Quiescent Current
LM27761DSGT Applications
Operational Amplifier Power
Wireless Communication Systems
Cellular-Phone Power-Amplifier Biasing
Interface Power Supplies
Handheld Instrumentation
Hi-Fi Headphone Amplifiers
Powering Data Converters
