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