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LT3048 Dual Step-Up/Boost Switching and LDO Regulator
Linear Technology’s low noise, low ripple bias regulators for op amp power supplies

Linear Technology/Analog Devices’ LT3048 is dual step-up/boost switching regulator and low dropout (LDO) regulator. This device generates low noise, low ripple bias output from input voltages of 2.7 V to 4.8 V. The boost regulator provides power to the linear regulator, and its output voltage is regulated to 1.1 V above the LDO output, optimizing LDO ripple rejection and transient response. Fixed frequency operation and current mode control allow the use of very small inductors and results in low, predictable output ripple. The switching regulator puts out minimum of 300 mA of current at 4.4 V, 6.1 V, 13.1 V, 16.1 V, and 23.1 V. The linear regulator generates 45 mA of current with a programmable voltage up to 22 V or fixed voltages of 3.3 V, 5 V, 12 V, and 15 V. High power supply ripple rejection combined with a low noise internal reference results in less than 500 μVP-P output ripple and noise. The LT3048 is perfect for op amp power supplies and sensor biasing applications.

Image of the LT3048 Typical Application

Image of the LT3048 Typical Application

Features
  • Generates low noise bias voltage from single cell Li-Ion battery
  • Voltage supply: 2.7 V to 4.8 V
  • Dual output switching, LDO
  • Output 1: 300 mA at 4.4 V, 6.1 V, 13.1 V, 16.1 V, and 23.1 V
  • Output 2: 45 mA, programable and fixed at 3.3 V, 5 V, 12 V, and 15 V
  • Switching frequency: 1 MHz, 2.2 MHz
  • Temperature operating range: -40°C to +125°C
  • Package/case: 8-DFN
Applications
  • Operational amplifier (op amp) supplies
  • Sensor bias
LT3048 Dual Step-Up/Boost Switching and LDO Regulator
Image Manufacturer Part Number Description   View Details
LT3048IDC-15#TRMPBF datasheet link IC REG DL BOOST/LINEAR 8DFN LT3048IDC-15#TRMPBF IC REG DL BOOST/LINEAR 8DFN   LT3048IDC-15#TRMPBF product page link
LT3048EDC-15#TRMPBF datasheet link IC REG DL BOOST/LINEAR 8DFN LT3048EDC-15#TRMPBF IC REG DL BOOST/LINEAR 8DFN   LT3048EDC-15#TRMPBF product page link
View More
2018011108 / 23.02.2018 / Electronic-components / Digi-Key Electronics /

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