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LT3028 - 典型应用图例：
LT3028典型应用图例一
LT3028典型应用图例二
LT3028 - 封装图解：
LT3028封装图解一
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LINEAR产品 - LT3028介绍

LT3028 - LT3028是Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs

LT3028是LINEAR凌力尔特公司的一款正稳压器产品，LT3028是LT3028是Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs，本站介绍了LT3028的封装应用图解、特点和优点、功能等，并给出了与LT3028相关的LINEAR元器件型号供参考。

LT3028 - LT3028是Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs - 正稳压器 - 电源管理 - 凌力尔特

LT3028 - Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs

LT3028 - Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulators with Independent Inputs - Linear Technology（凌力尔特）

功能描述
The LT3028 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 30µA quiescent current per output makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1µA. Shutdown control is independent for each output, allowing for flexibility in power management. The device is capable of operating over an input voltage range of 1.8V to 20V. Output 1 can supply 500mA of output current with a dropout voltage of 320mV. The device can supply 100mA of output current from Output 2 with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.

The LT3028 regulator is stable with output capacitors as low as 1µF for the 100mA output and 3.3µF for the 500mA output. 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 LT3028 regulator is available in the thermally enhanced 16-lead TSSOP and 16-lead, low profile (5mm × 3mm × 0.75mm) DFN packages.

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

特点
  • Low Noise: 20µVRMS (10Hz to 100kHz)
  • Low Quiescent Current: 30µA/Output
  • Independent Inputs
  • Wide Input Voltage Range: 1.8V to 20V
  • Output Current: 100mA/500mA
  • Very Low Shutdown Current: <0.1µA
  • Low Dropout Voltage: 300mV/320mV at 100mA/500mA
  • Adjustable Outputs from 1.22V to 20V
  • Stable with as Low as 1µF/3.3µF 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 16-Lead TSSOP and 16-Lead (5mm × 3mm) DFN Packages
    • 应用
  • Cellular Phones
  • Pagers
  • Battery-Powered Systems
  • Frequency Synthesizers
  • Wireless Modems
  • Tracking/Sequencing Power Supplies
    • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LT3028EDHC 5x3 DFN-16 E $3.15 $2.65
    LT3028EDHC#PBF 5x3 DFN-16 E $3.15 $2.65
    LT3028EDHC#TR 5x3 DFN-16 E $2.75
    LT3028EDHC#TRPBF 5x3 DFN-16 E $2.75
    LT3028EFE TSSOP-16 E $3.04 $2.55
    LT3028EFE#PBF TSSOP-16 E $3.04 $2.55
    LT3028EFE#TR TSSOP-16 E $2.67
    LT3028EFE#TRPBF TSSOP-16 E $2.67
    LT3028IDHC 5x3 DFN-16 I $3.78 $3.18
    LT3028IDHC#PBF 5x3 DFN-16 I $3.78 $3.18
    LT3028IDHC#TR 5x3 DFN-16 I $3.28
    LT3028IDHC#TRPBF 5x3 DFN-16 I $3.28
    LT3028IFE TSSOP-16 I $3.64 $3.06
    LT3028IFE#PBF TSSOP-16 I $3.64 $3.06
    LT3028IFE#TR TSSOP-16 I $3.18
    LT3028IFE#TRPBF TSSOP-16 I $3.18
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  • LT1763 - 500mA、低噪声、LDO 微功率稳压器
  • LT3024 - 双通道 100mA/500mA 低压差、低噪声、微功率稳压器
  • LT3029 - 双通道 500mA / 500mA 低压差、低噪声、微功率线性稳压器
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LT3085 - 可调 500mA 单电阻器低压差稳压器
  • LT3032 系列 - 双通道、150mA、正 / 负、低噪声、低压差线性稳压器
  • LT1963A - 1.5A、低噪声、快速瞬态响应 LDO 稳压器
  • LT3030 - 双通道、750mA / 250mA、低压差、低噪声、微功率线性稳压器
  • LT1962 - 300mA、低噪声 、微功率 LDO 稳压器
  • LT1761 - 采用 SOT-23 封装的 100mA、低噪声、LDO 微功率稳压器
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