LM27762

Product Folder Order Now Technical Documents Tools & Software Support & Community LM27762 SNVSAF7B – AUGUST 2016 – REVISED FEBRUARY 2017 LM27762 Low-Noise Positive and Negative Output Integrated Charge Pump Plus LDO 1 Features 1 Generates Low-Noise Adjustable Positive Supply Voltage Between 1.5 V and 5 V and Negative Supply Voltage Between –1.5 V and –5 V Input Voltage Range 2.7 V to 5.5 V ±250-mA Output Current Inverting Charge Pump Followed by Negative LDO 2-MHz Low-Noise Fixed-Frequency Operation 2.5-Ω Inverter Output Impedance, VIN = 5 V Negative LDO Dropout Voltage 30 mV at 100 mA, VOUT = –5 V Positive LDO with 45-mV Dropout Voltage at 100 mA, VOUT = 5 V 390-µA Quiescent Current (Typical) Shutdown Quiescent Current to 0.5 µA (Typical) Current Limit and Thermal Protection Power Good Pin (Active Low) Create a Custom Design Using the LM27762 With the WEBENCH® Power Designer 2 Applications Hi-Fi Audio Headphone Amplifiers Operational Amplifier Power Biasing Powering Data Converters Wireless Communication Systems Interface Power Supplies Handheld Instrumentation 3 Description The LM27762 delivers very low-noise positive and negative outputs that are adjustable between ±1.5 V and ±5 V. Input-voltage range is from 2.7 V to 5.5 V, and output current goes up to ±250 mA. With an operating current of only 390 µA and 0.5-µA typical shutdown current, the LM27762 provides ideal performance for power amplifier and DAC bias and other high-curr...