LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
The LT®3580 is a PWM DC/DC converter containing an internal 2A, 42V switch. The LT3580 can be configured as either a boost, SEPIC or inverting converter. Capable of generating 12V at 550mA or –12V at 350mA from a 5V input, the LT3580 is ideal for many local power supply designs.
The LT3580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT3580 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 200kHz and 2.5MHz.
The LT3580 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.
Additional features such as frequency foldback and soft-start are integrated. The LT3580 is available in tiny 3mm × 3mm 8-lead DFN and 8-lead MSOP packages.
Features
Typical Application  | Applications
Packaging  |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LT3580EDD#PBF | 3x3 DFN-8 | E | $2.86 | $2.00 |
| LT3580EDD#TRPBF | 3x3 DFN-8 | E | $2.06 | |
| LT3580EMS8E#PBF | MS-8 | E | $3.00 | $2.10 |
| LT3580EMS8E#TRPBF | MS-8 | E | $2.16 | |
| LT3580HMS8E#PBF | MS-8 | H | $3.96 | $2.77 |
| LT3580HMS8E#TRPBF | MS-8 | H | $2.83 | |
| LT3580IDD#PBF | 3x3 DFN-8 | I | $3.43 | $2.40 |
| LT3580IDD#TRPBF | 3x3 DFN-8 | I | $2.46 | |
| LT3580IMS8E#PBF | MS-8 | I | $3.60 | $2.52 |
| LT3580IMS8E#TRPBF | MS-8 | I | $2.58 | |
| LT3580MPMS8E#PBF | MS-8 | MP | $11.87 | $8.31 |
| LT3580MPMS8E#TRPBF | MS-8 | MP | $8.37 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1144A-A | LT3580EDD Demo Board | 3V ≤ VIN ≤ 10V, VOUT = 12V @ 300mA | $150.00 |
| DC1144A-B | LT3580EDD Demo Board | 5V ≤ VIN ≤ 12, VOUT = -12V @ 350mA | $150.00 |
- DN435 - 单个电阻器设定 DC/DC 转换器的正或负输出
- LT3580 - 具 2A/42V 开关和同步功能的 2.5MHz 升压/负输出 DC/DC 转换器
- 2A、42V 升压型转换器现可提供高温 H 级和 MP 级版本
- AN118 - High Voltage, Low Noise, DC/DC Converters
- DN435 - Single Resistor Sets Positive or Negative Output for DC/DC Converter
- R530 - Reliability Data
- Jan 2008 - Internal 2A, 42V Switch, Adjustable 2.5MHz Operating Frequency and 3mm × 3mm Package Allow Boost Regulator to Fit Numerous Applications
- 2.5MHz Boost/Inverter DC/DC Converter with 2A/42V Switch & Synchronization
- 2A, 42V Boost Converter Now Offered in High Temperature "H" & "MP" Grades
- LT3580 Footprints and Symbols
- LT3580 Demo Circuit - 2A Boost Converter (3-10V to 12V @ 300mA)
