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

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

数据手册(英文) : LTC3414 - 4A, 4MHz, Monolithic Synchronous Step-Down Regulator.PDF
设计要点 (英文) : Design Solutions 10 - Active Voltage Positioning Reduces Output Capacitors.PDF
可靠性数据 : R415 Reliability Data .PDF