LTC3204 - Low Noise Regulated Charge Pump in 2 × 2 DFN

The LTC3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are low noise, constant frequency (1.2MHz) switched capacitor 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.

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
Typical Application

Applications
  • 2 AA Cell to 3.3V
  • Li-Ion to 5V
  • USB On-The-Go Devices
  • White LED Drivers
  • Handheld Devices
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC3204BEDC-3.3#PBF2x2 DFN-6E$1.91
LTC3204BEDC-3.3#TRMPBF2x2 DFN-6E$1.91$1.62
LTC3204BEDC-3.3#TRPBF2x2 DFN-6E$1.91$1.60
LTC3204BEDC-5#PBF2x2 DFN-6E$1.91
LTC3204BEDC-5#TRMPBF2x2 DFN-6E$1.91$1.62
LTC3204BEDC-5#TRPBF2x2 DFN-6E$1.91$1.60
LTC3204EDC-3.3#PBF2x2 DFN-6E$1.91
LTC3204EDC-3.3#TRMPBF2x2 DFN-6E$1.91$1.62
LTC3204EDC-3.3#TRPBF2x2 DFN-6E$1.91$1.60
LTC3204EDC-5#PBF2x2 DFN-6E$1.91
LTC3204EDC-5#TRMPBF2x2 DFN-6E$1.91$1.62
LTC3204EDC-5#TRPBF2x2 DFN-6E$1.91$1.60
Demo Boards
Part NumberDescriptionPrice
DC761A-ALTC3204EDC-5 Demo Board | Low Noise Regulated Charge Pump in 2x2 DFN, Burst Mode, Vin = 2.7V-5.5V, Vout = 5V/(65-150mA)$75.00
DC761A-BLTC3204EDC-3.3 Demo Board | Low Noise Regulated Charge Pump in 2x2 DFN, Burst Mode, Vin = 1.8V-4.5V, Vout = 3.3V/(40-50mA max)$75.00
DC916A-ALTC3204BEDC-5 Demo Board | Low Noise Regulated Charge Pump 2x2 DFN, Vin = 2.7V-5.5V, Vout = 5V/(65-150mA max)$75.00
DC916A-BLTC3204BEDC-3.3 Demo Board | Low Noise Regulated Charge Pump in 2x2 DFN, Vin = 1.8V-4.5V, Vout = 3.3V/(40-50mA max)$75.00
Datasheet
Reliability Data
Press Release
LTspice
Related Product
LTC3204-3.3/LTC3204-5/ LTC3204B-3.3/LTC3204B-5 - Low Noise Regulated Charge Pump in 2 × 2 DFN
R415 - Reliability Data
LTC3204 - 采用2mm x 2mm DFN 封装的固定 3.3V 和 5V 低噪声稳压充电泵倍增器
LTC3204 Footprints and Symbols
LTC3204-3.3 Demo Circuit - Low Noise Regulated Charge Pump (1.8-4.5V to 3.3V @ 50mA)
LTC3204-5 Demo Circuit - Low Noise Regulated Charge Pump (2.7-5.5V to 5V @ 150mA)