LT3027 Dual 100mA, Low Dropout, Low Noise, Micropower Regulator with Independent Inputs

The LT®3027 is a dual, micropower, low noise, low dropout regulator with independent inputs. With an external 0.01µF bypass capacitor, output noise is a low 20µVRMS 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 for flexibility in power management. The device is capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current from each channel with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.

The LT3027 regulator is stable with output capacitors as low as 1µF. 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.

Protected by U.S. Patents, including 6118263, 6144250

产品特点 Features

Low Noise: 20µVRMS (10Hz to 100kHz)
Low Quiescent Current: 25µA/Channel
Independent Inputs
Wide Input Voltage Range: 1.8V to 20V
Output Current: 100mA/Channel
Very Low Shutdown Current: <0.1µA
Low Dropout Voltage: 300mV at 100mA
Adjustable Output from 1.22V to 20V
Stable with 1µF Output Capacitor
Stable with Aluminum, Tantalum or Ceramic Capacitors
Reverse Battery Protected
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Tracking/Sequencing Capability
Thermally Enhanced 10-Lead MSOP and DFN Packages

应用

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

典型应用图

参数

LT3027 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT3027EDD	DFN	10	E	$2.08	$1.75
LT3027EDD#PBF	DFN	10	E	$2.08	$1.75
LT3027EDD#TR	DFN	10	E		$1.85
LT3027EDD#TRPBF	DFN	10	E		$1.85
LT3027EMSE	MSOP	10	E	$1.96	$1.65
LT3027EMSE#PBF	MSOP	10	E	$1.96	$1.65
LT3027EMSE#TR	MSOP	10	E		$1.71
LT3027EMSE#TRPBF	MSOP	10	E		$1.71
LT3027IDD	DFN	10	I	$2.50	$2.10
LT3027IDD#PBF	DFN	10	I	$2.50	$2.10
LT3027IDD#TR	DFN	10	I		$2.16
LT3027IDD#TRPBF	DFN	10	I		$2.16
LT3027IMSE	MSOP	10	I	$2.36	$1.98
LT3027IMSE#PBF	MSOP	10	I	$2.36	$1.98
LT3027IMSE#TR	MSOP	10	I		$2.08
LT3027IMSE#TRPBF	MSOP	10	I		$2.08

演示电路板

器件型号	描述
DC811A	LT3027EDD \| Dual Output Low Noise LDO Regulator, Vin1 & Vin2=2.3V-20V, Vout1 & Vout2=2.5V/3.3V/5V @ 100mA

LT3027 数据手册及相关资料下载

数据手册(英文) : LT3027: Dual 100mA, Low Dropout, Low Noise, Micropower Regulator with Independent Inputs.PDF
可靠性数据 : R365 Reliability Data .PDF
LT Journal : May 2004 Dual Regulators Offer Flexibility with Independent Shutdown Control and Adjustable Start-Up Timing..PDF