LT1935 1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch

The LT®1935 is the industry’s highest power SOT-23 switching regulator. Its unprecedented 2A, 40V internal switch allows high output currents to be generated in a small footprint. Intended for space-conscious applications, the LT1935 switches at 1.2MHz, allowing the use of tiny, low profile inductors and capacitors 2mm or less in height. The NPN switch achieves a VCESAT of just 180mV at 2A independent of supply voltage, resulting in high efficiency even at maximum power levels from a 3V input.

A constant frequency, internally compensated, current mode PWM architecture results in low, predictable output noise that is easy to filter. Low ESR ceramic capacitors can be used on the output, further reducing noise to the millivolt level. The high voltage switch on the LT1935 is rated at 40V, making the device ideal for boost converters up to 38V as well as for single-ended primary inductance converter (SEPIC) and flyback designs. The device can generate 5V at up to 1A from a 3.3V supply or 5V at 550mA from four alkaline cells in a SEPIC design.

The LT1935 is available in a 5-lead SOT-23 package

产品特点 Features

1.2MHz Switching Frequency
High Output Voltage: Up to 38V
Wide Input Range: 2.3V to 16V
Low VCESAT Switch: 180mV at 2A
Soft-Start
Uses Small Surface Mount Components
5V at 1A from 3.3V Input
12V at 600mA from 5V Input
Low Shutdown Current: <1µA
Pin-for-Pin Compatible with the LT1613 and LT1930
Low Profile (1mm) SOT-23 (ThinSOT™) Package

参数

应用

Digital Cameras
Battery Backup
LCD Bias
Local 5V or 12V Supply
PC Cards
xDSL Power Supply
TFT-LCD Bias Supply

典型应用图

LT1935 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) *
LT1935ES5	SOT	5	E	$2.96
LT1935ES5#PBF	SOT	5	E	$2.96
LT1935ES5#TR	SOT	5	E	$2.96	$2.50
LT1935ES5#TRM	SOT	5	E	$2.96	$2.52
LT1935ES5#TRMPBF	SOT	5	E	$2.96	$2.52
LT1935ES5#TRPBF	SOT	5	E	$2.96	$2.50

LT1935 数据手册及相关资料下载

数据手册(英文) : LT1935 - 1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch.PDF
可靠性数据 : R303 Reliability Data .PDF