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Analog Devices LT8580
Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization
Overview
| Topology | SEPIC Buck-Boost Topology |
| Input voltage | 9-16 V |
| Switching frequency | 200-1500 kHz |
| Output 1 | 12 V / 0.24 A |
| IC revision | C |
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 adjust-able undervoltage lockout function.Additional features such as frequency foldback andsoft-start are integrated. The LT8580 is available in tiny thermally enhanced 3mm × 3mm 8-lead DFN and 8-lead MSOP packages
Features
1A, 65V Power SwitchnAdjustable Switching FrequencynSingle Feedback Resistor Sets VOUTnSynchronizable to External Clock nHigh Gain SHDN Pin Accepts Slowly Varying Input SignalsnWide Input Voltage Range: 2.55V to 40VnLow VCESAT Switch: 400mV at 0.75A (Typical)nIntegrated Soft-Start FunctionnEasily Configurable as a Boost, SEPIC, or Inverting ConverternUser Configurable Undervoltage Lockout (UVLO)nPin Compatible with LT3580nTiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP PackagesnAEC-Q100 Qualified for Automotive Applications
Typical applications
- TFT-LCD Bias Supplies
- VFD Bias Supplies
- GPS Receivers
- Local Power Supply
- DSL Modems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L1 (µH) | L2 (µH) | IR (A) | IR 2 (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744877220 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-DD SMT Shielded Coupled Inductor | 22 | 22 | 0.8 | 0.8 | 1.8 | 0.215 | 0.215 | 0.26 | 0.26 | 16 | Straight |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744877220 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L1 (µH) | L2 (µH) | IR (A) | IR 2 (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Type | Samples |
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