LT3436 3A, 800kHz Step-Up Switching Regulator

The LT®3436 is an 800kHz monolithic boost switching regulator. A high efficiency 3A, 0.1 Ohm switch is included on the die together with all the control circuitry required to complete a high frequency, current-mode switching regulator. Current-mode control provides fast transient response and excellent loop stability.

New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li- Ion batteries. An operating supply current of 1mA maintains high efficiency, especially at lower output currents. Shutdown reduces quiescent current to 11µA. Maximum switch current remains constant at all duty cycles. Synchronization capability allows an external logic level signal to increase the internal oscillator from 1MHz to 1.4MHz.

Full cycle-by-cycle switch current limit protection and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of tiny chip inductors. The LT3436 is available in an exposed pad, 16-pin TSSOP package.

*Patent numbers 6,535,042; 6,611,131; 6,498,466

产品特点 Features

Constant 800kHz Switching Frequency
Wide Operating Voltage Range: 3V to 25V
High Efficiency 0.1 Ohm/3A Switch
1.2V Feedback Reference Voltage
±2% Overall Output Voltage Tolerance
Uses Low Profile Surface Mount External Components
Low Shutdown Current: 11µA
Synchronizable from 1MHz to 1.4MHz
Current-Mode Control
Constant Maximum Switch Current Rating at All Duty Cycles*
Available in a Small Thermally Enhanced TSSOP-16 Package

应用

DSL Modems
Portable Computers
Battery-Powered Systems
Distributed Power

典型应用图

参数

LT3436 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) *
LT3436EFE	TSSOP	16	E	$4.64	$3.25
LT3436EFE#PBF	TSSOP	16	E	$4.64	$3.25
LT3436EFE#TR	TSSOP	16	E		$3.37
LT3436EFE#TRPBF	TSSOP	16	E		$3.37
LT3436IFE	TSSOP	16	I	$5.36	$3.75
LT3436IFE#PBF	TSSOP	16	I	$5.36	$3.75
LT3436IFE#TR	TSSOP	16	I		$3.87
LT3436IFE#TRPBF	TSSOP	16	I		$3.87

LT3436 数据手册及相关资料下载

数据手册(英文) : LT3436 - 3A, 800kHz Step-Up Switching Regulator.PDF
设计要点 (英文) : DN352 - 60V, 3A Step-Down DC/DC Converter Has Low Dropout and 100µA Quiescent Current.PDF
可靠性数据 : R388 Reliability Data .PDF