LTC3204 Low Noise Regulated Charge Pump in 2 × 2 DFN

The LTC®3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are low noise, constant frequency (1.2MHz) switched ca-pacitor voltage doublers. The LTC3204-3.3/LTC3204B-3.3 can produce a regulated output voltage of 3.3V from a minimum input voltage of 1.8V (2 alkaline cells) whereas the LTC3204-5/LTC3204B-5 can produce 5V from a minimum of 2.7V (Li-Ion battery) input.

LTC3204-3.3/LTC3204-5 feature automatic Burst Mode® operation at light loads to maintain low supply current whereas LTC3204B-3.3/LTC3204B-5 feature constant frequency operation at any load. Built-in soft-start circuitry prevents excessive inrush current during start-up. Thermal shutdown and current-limit circuitry allow the parts to survive a continuous short-circuit from VOUT to GND.

High switching frequency minimizes overall solution footprint by allowing the use of tiny ceramic capaci-tors. In shutdown, the load is disconnected from the input and the quiescent current is reduced to <1µA.

The LTC3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are available in a low profile (0.75mm) 6-lead 2mm × 2mm DFN package.

*Protected by U.S. Patents including 6411531

产品特点 Features
  • Fixed 3.3V or 5V Outputs
  • VIN Range:
    1.8V to 4.5V (LTC3204-3.3/LTC3204B-3.3)
    2.7V to 5.5V (LTC3204-5/LTC3204B-5)
  • Output Current:
    Up to 150mA (LTC3204-5/LTC3204B-5)
    Up to 50mA (LTC3204-3.3/LTC3204B-3.3)
  • Automatic Burst Mode® Operation with IQ = 48µA (LTC3204-3.3/LTC3204-5)
  • Constant Frequency Operation at All Loads (LTC3204B-3.3/LTC3204B-5)
  • Low Noise Constant Frequency (1.2MHz) Operation*
  • Built-In Soft-Start Reduces Inrush Current
  • Shutdown Disconnects Load from Input
  • Shutdown Current <1µA
  • Short-Circuit/Thermal Protection
  • Available in Low Profile 6-Lead DFN Package
应用
  • 2 AA Cell to 3.3V
  • Li-Ion to 5V
  • USB On-The-Go Devices
  • White LED Drivers
  • Handheld Devices
典型应用图
LTC3204 典型应用
参数
LTC3204 参数
LTC3204 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) *
LTC3204BEDC-3.3 DFN 6 E $1.91
LTC3204BEDC-3.3#PBF DFN 6 E $1.91
LTC3204BEDC-3.3#TR DFN 6 E $1.91 $1.60
LTC3204BEDC-3.3#TRM DFN 6 E $1.91 $1.62
LTC3204BEDC-3.3#TRMPBF DFN 6 E $1.91 $1.62
LTC3204BEDC-3.3#TRPBF DFN 6 E $1.91 $1.60
LTC3204BEDC-5 DFN 6 E $1.91
LTC3204BEDC-5#PBF DFN 6 E $1.91
LTC3204BEDC-5#TR DFN 6 E $1.91 $1.60
LTC3204BEDC-5#TRM DFN 6 E $1.91 $1.62
LTC3204BEDC-5#TRMPBF DFN 6 E $1.91 $1.62
LTC3204BEDC-5#TRPBF DFN 6 E $1.91 $1.60
LTC3204EDC-3.3 DFN 6 E $1.91
LTC3204EDC-3.3#PBF DFN 6 E $1.91
LTC3204EDC-3.3#TR DFN 6 E $1.91 $1.60
LTC3204EDC-3.3#TRM DFN 6 E $1.91 $1.62
LTC3204EDC-3.3#TRMPBF DFN 6 E $1.91 $1.62
LTC3204EDC-3.3#TRPBF DFN 6 E $1.91 $1.60
LTC3204EDC-5 DFN 6 E $1.91
LTC3204EDC-5#PBF DFN 6 E $1.91
LTC3204EDC-5#TR DFN 6 E $1.91 $1.60
LTC3204EDC-5#TRM DFN 6 E $1.91 $1.62
LTC3204EDC-5#TRMPBF DFN 6 E $1.91 $1.62
LTC3204EDC-5#TRPBF DFN 6 E $1.91 $1.60
LTC3204 数据手册及相关资料下载
  1. 数据手册(英文) : LTC3204-3.3/LTC3204-5/ LTC3204B-3.3/LTC3204B-5 - Low Noise Regulated Charge Pump in 2 × 2 DFN.PDF
  2. 可靠性数据 : R415 Reliability Data .PDF