LT3027

• Product Introduction

At dual 100mA modes, the LT3027 has low dropout and low noise, with independent input of a micro-power voltage regulator

peculiarity

• Low Noise: 20μV RMS (10Hz to 100kHz) Low Noise: 20μVRMS (10Hz to 100kHz)
• Low Quiescent Current: 25μA/Channel Low Quiescent Current: 25μA/Channel
• Independent Inputs
• Wide Input Voltage Range: 1.8V to 20V
• Output Current: 100mA/Channel Output Current: 100mA/Channel
• Very Low Shutdown Current: 极低的关断电流：
• Low Dropout Voltage: 300mV at 100mA. Low Dropout Voltage: 300mV at 100mA
• Adjustable output from 1.22V to 20V, adjustable output from 1.22V to 20V
• Stable with 1μF Output Capacitor: Stable 1μF output capacitor
• Stable with Aluminum, Tantalum, or Ceramic Capacitors
• Reverse Battery Protection
• No Protection Diodes Needed
• Overcurrent and Overtemperature Protected
• Tracking/Sequencing Capability
• Thermally Enhanced 10-Lead MSOP and DFN Packages

description

The LT®3027 is a dual, micropower, low noise, low dropout regulator with independent inputs. ®The LT 3027 dual, low power consumption, low noise, low dropout regulator features independent inputs. With an external 0.01μF bypass capacitor, output noise is low 20μV RMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 25μA quiescent current per channel makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1μA. Shutdown control is independent for each channel, allowing flexibility in power management. The device is capable of operating an input voltage from 1.8V to 20V, and can supply 100mA of output current from each channel with a dropout voltage of 300mV. It can also provide an output current of 100 mA with a voltage drop of 300mV per channel. Quiescent current is well controlled in dropout.

The LT3027 regulator is stable with output capacitors as low as 1µF. LT3027稳压器是低至1μF的输出电容器稳定。 Small ceramic capacitors can be used without the series resistance required by other regulators.

Internal protection circuitry includes reverse battery protection, current limiting, and thermal limiting protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3027 regulator is available in the thermally enhanced 10-lead MSOP and low profile (0.75mm) 3mm × 3mm DFN packages. The LT3027 regulator comes in a heat-resistant, enhanced 10-lead MSOP and a flat (0.75mm) 3mm x 3mm DFN package

apply

• Cellular Phones
• Pagers pager
• Battery-Powered Systems
• Frequency Synthesizers
• Wireless Modems
• Tracking/Sequencing Power Supplies