LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter
The LT®3433 is a 200kHz fixed-frequency current mode switching regulator that provides both step-up and stepdown regulation using a single inductor. The IC operates over a 4V to 60V input voltage range making it suitable for use in various wide input voltage range applications such as automotive electronics that must withstand both load dump and cold crank conditions.
Internal control circuitry monitors system conditions and converts from single switch buck operation to dual switch bridged operation when required, seamlessly changing between step-down and step-up voltage conversion.
Optional Burst Mode® operation reduces no-load quiescent current to 100µA and maintains high efficiencies with light loads.
Current limit foldback and frequency foldback help prevent inductor current runaway during start-up. Programmable soft-start helps prevent output overshoot at start-up.
The LT3433 is available in a 16-lead thermally enhanced TSSOP package.
特点
典型应用   | 应用
封装信息 |
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
|---|---|---|---|---|
| LT3433EFE#PBF | TSSOP-16 | E | $4.64 | $3.25 |
| LT3433EFE#TRPBF | TSSOP-16 | E | $3.37 | |
| LT3433IFE#PBF | TSSOP-16 | I | $5.36 | $3.75 |
| LT3433IFE#TRPBF | TSSOP-16 | I | $3.87 |
演示电路板
| 器件型号 | 描述 | 价格 |
|---|---|---|
| DC527A | LT3433EFE | Step-Up/Step-Down Converter, 4V to 60V Input, Vout=5V/400mA @ 12Vin, See Load Current Table | $125.00 |
- DN330 High Input Voltage Monolithic Switcher Steps Up and Down Using a Single Inductor (Design Note 330A)
- R468 Reliability Data
- Dec 2003 High Input Voltage Monolithic Switcher Steps Up and Down Using Single Inductor
- LT3433 Footprints and Symbols
- LT3433 Demo Circuit - High Voltage Step-Up / Step-Down Converter (5V to 5V @ 125mA)
