LM27761DSGR

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LM27761DSGR

Low-Noise Regulated Inverter with Integrated LDO

Packaging

Package | PIN: DSG | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.45
10-24 $1.29
25-99 $1.20
100-249 $1.05
250-499 $0.97
500-749 $0.81
750-999 $0.67
1000+ $0.61

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-Ω Inverter Output Impedance, VIN = 5 V
  • ±4% Regulation at Peak Load
  • 370-µA Quiescent Current
  • 2-MHz (Typical) Low-Noise Fixed-Frequency Operation
  • 35-dB (Typical) LDO PSRR at 2 MHz
    With 80-mA Load Current
  • 30-mV LDO Dropout Voltage at 100 mA,
    VOUT = –5 V
  • Current Limit and Thermal Protection
  • Create a Custom Design Using the LM27761 With the WEBENCH® Power Designer

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Texas Instruments  LM27761DSGR

The LM27761 low-noise regulated switched-capacitor voltage inverter delivers a verylow-noise adjustable output for an input voltage in the range of 2.7 V to 5.5 V. Four low-costcapacitors are used in the application solution to provide up to 250 mA of output current. Theregulated output for the device is adjustable between −1.5 V and −5 V. The LM27761 operates at2-MHz (typical) switching frequency to reduce output resistance and voltage ripple. With anoperating current of only 370 µA (charge-pump power efficiency greater than 80% with most loads)and 7-µA typical shutdown current, the LM27761 provides ideal performance when driving poweramplifiers, DAC bias rails, and other high-current, low-noise voltage applications.