DocumentationDatasheet
Reliability Data
LT Journal
Press Release
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LTpowerCAD
Features
- 1A, 65V Power Switch
- Adjustable Switching Frequency
- Single Feedback Resistor Sets VOUT
- Synchronizable to External Clock
- High Gain SHDN Pin Accepts Slowly Varying Input Signals
- Wide Input Voltage Range: 2.55V to 40V
- Low VCESAT Switch: 400mV at 0.75A (Typical)
- Integrated Soft-Start Function
- Easily Configurable as a Boost, SEPIC, or Inverting Converter
- User Configurable Undervoltage Lockout (UVLO)
- Pin Compatible with LT3580
- Tiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages
Typical Application
Description
The LT®8580 is a PWM DC/DC converter containing an internal 1A, 65V switch. The LT8580 can be configured as either a boost, SEPIC or inverting converter.
The LT8580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8580 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz.
The LT8580 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 LT8580 is available in tiny thermally enhanced 3mm × 3mm 8-lead DFN and 8-lead MSOP packages.
3x3 DFN-8,MS-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT8580EDD#PBF | DFN | 8 | E | $3.36 | $2.35 |
| LT8580EDD#TRPBF | DFN | 8 | E | $2.41 | |
| LT8580EMS8E#PBF | MSOP | 8 | E | $3.36 | $2.35 |
| LT8580EMS8E#TRPBF | MSOP | 8 | E | $2.41 | |
| LT8580HDD#PBF | DFN | 8 | H | $4.06 | $2.84 |
| LT8580HDD#TRPBF | DFN | 8 | H | $2.90 | |
| LT8580HMS8E#PBF | MSOP | 8 | H | $4.06 | $2.84 |
| LT8580HMS8E#TRPBF | MSOP | 8 | H | $2.90 | |
| LT8580IDD#PBF | DFN | 8 | I | $3.70 | $2.59 |
| LT8580IDD#TRPBF | DFN | 8 | I | $2.65 | |
| LT8580IMS8E#PBF | MSOP | 8 | I | $3.70 | $2.59 |
| LT8580IMS8E#TRPBF | MSOP | 8 | I | $2.65 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2186A-A | LT8580 Demo Board | Boost, 3V ≤ VIN ≤ 10V, Vout = 12V @ 120mA | $150.00 | |
| DC2186A-B | LT8580 Demo Board | Two Inductor Inverting (Cuk), 5V ≤ VIN ≤ 12V, Vout = -12V @ 150mA | $150.00 |