Linear Technology LT3048IDC-3.3#TRMPBF

Description
The LT3048 series generates low noise, low ripple bias supplies from input voltages of 2.7V to 4.8V. It includes a boost regulator and a LDO linear regulator. The boost regulator provides power to the linear regulator, which generates a programmable output (LT3048) or fixed output voltages (LT3048-XX). The boost regulator output voltage is regulated to 1.1V 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 result in low, predictable output ripple. The LT3048 is available in a 8-lead 2mm x 2mm DFN package.

Features
Generates low noise bias voltage from single-cell Li-Ion battery
Output current: Up to 40mA
Low output ripple and noise: <500μVp-p
Boost regulator:
1MHz operation (LT3048)
2.2MHz operation (LT3048-XX)
Integrated Schottky diode
Low dropout linear regulator:
1.235V feedback voltage (LT3048)
Low noise: <120μVRMS (10Hz to 100kHz)
0.1% load regulation
Fixed 3.3V, 5V, 12V, 15V and adjustable output options
Short-circuit and thermal protection
Load disconnect in shutdown
Available in 2mm x 2mm DFN package

Applications
Sensor bias
Op amp supply