LTC3670 - Monolithic 400mA Buck Regulator with Dual 150mA LDOs in 3mm × 2mm DFN

Features
  • Triple Output Supply from a Single 2.5V to 5.5V Input
  • 400mA Buck DC/DC Plus Dual 150mA LDOs in One IC
  • Outputs Regulate Down to 0.8V
  • ±2.5% Reference Accuracy
  • Constant-Frequency 2.25MHz Operation
  • Burst Mode Operation for High Efficiency at Light Loads; IQ = 70μA, All Outputs Enabled
  • Independent Enable Pin for Each Output
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Internal Soft-Start for Each Output
  • Tiny 12-Lead 3mm x 2mm x 0.75mm DFN Package
Typical Application

Applications
  • Handheld Products
  • Portable Instruments
  • Single-Cell Li-Ion/Li-Polymer Powered Devices
  • DMB/DVB-H Multimedia Cell Phones
  • Multivoltage Power for Digital Logic, I/O, FPGAs, CPLDs, ASICs, SoCs, CPUs and RF Chipsets
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC3670EDDB#PBF3x2 DFN-12E$2.79
LTC3670EDDB#TRMPBF3x2 DFN-12E$2.79$2.00
LTC3670EDDB#TRPBF3x2 DFN-12E$2.79$1.95
Demo Boards
Part NumberDescriptionPrice
DC1277ALTC3670EDDB Demo Board | 2.25MHz, Buck Plus Two 150mA LDOs, 2.5V ≤ VIN ≤ 5.5V, Vout1 = 1.2V @ 400mA, Vout2 = 2.8V @ 150mA, Vout3 = 3.3V @ 150mA$100.00
Datasheet
Reliability Data
Press Release
Related Product
LTC3670 - Monolithic 400mA Buck Regulator with Dual 150mA LDOs in 3mm × 2mm DFN
R415 - Reliability Data
LTC3670 - 采用 2mm x 3mm DFN 封装、具两个 150mA LDO 的 400mA、2.25MHz 同步降压型 DC/DC 转换器
LTC3670 Footprints and Symbols