LTC3414 4A, 4MHz, Monolithic Synchronous Step-Down Regulator

The LTC®3414 is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 4A of output current. The internal synchronous power switch with 67milliOhm on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The LTC3414 can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference while Burst Mode operation provides high efficiency by reducing gate charge losses at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the requirements of the application

产品特点 Features
  • High Efficiency: Up to 95%
  • 4A Output Current
  • Low Quiescent Current: 64µA
  • Low RDS(ON) Internal Switch: 67 milliOhm
  • Programmable Frequency: 300KHz to 4MHz
  • 2.25V to 5.5V Input Voltage Range
  • ±2% Output Voltage Accuracy
  • 0.8V Reference Allows Low Output Voltage
  • Selectable Forced Continuous/Burst Mode®operation with Adjustable Burst Clamp
  • Synchronizable Switching Frequency
  • Low Dropout Operation: 100% Duty Cycle
  • Power Good Output Voltage Monitor
  • Overtemperature Protected
  • Available in 20-Lead Exposed TSSOP Package
应用
  • Point-of-Load Regulation
  • Notebook Computers
  • Portable Instruments
  • Distributed Power Systems
典型应用图
LTC3414 典型应用
参数
LTC3414 参数
LTC3414 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) *
LTC3414EFE TSSOP 20 E $6.07  $4.25 
LTC3414EFE#PBF TSSOP 20 E $6.07  $4.25 
LTC3414EFE#TR TSSOP 20 E $4.31 
LTC3414EFE#TRPBF TSSOP 20 E $4.31 
LTC3414IFE TSSOP 20 I $6.50  $4.55 
LTC3414IFE#PBF TSSOP 20 I $6.50  $4.55 
LTC3414IFE#TR TSSOP 20 I $4.61 
LTC3414IFE#TRPBF TSSOP 20 I $4.61 
LTC3414MPFE TSSOP 20 MP $11.76  $8.23 
LTC3414MPFE#PBF TSSOP 20 MP $11.76  $8.23 
LTC3414MPFE#TR TSSOP 20 MP $8.29 
LTC3414MPFE#TRPBF TSSOP 20 MP $8.29 
LTC3414 数据手册及相关资料下载
  1. 数据手册(英文) : LTC3414 - 4A, 4MHz, Monolithic Synchronous Step-Down Regulator.PDF
  2. 设计要点 (英文) : Design Solutions 10 - Active Voltage Positioning Reduces Output Capacitors.PDF
  3. 可靠性数据 : R415 Reliability Data .PDF