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Overview
| Topology | Buck Converter |
| Input voltage | 12-40 V |
| Switching frequency | 50-900 kHz |
| Output 1 | 3.3 V / 10 A |
Description
The LTC®7801 is a high performance step-down switchingregulator DC/DC controller that drives an all N-channelsynchronous power MOSFET stage that can operate frominput voltages up to 140V. A constant frequency currentmode architecture allows a phase-lockable frequency ofup to 850kHz.
Features
Wide VIN Range: 4V to 140V (150V Abs Max)nn Wide Output Voltage Range: 0.8V to 60Vnn Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE)nn Low Operating IQ: 40μA (Shutdown = 10μA)nn 100% Duty Cycle Operationnn No External Bootstrap Diode Requirednn Selectable Gate Drive UVLO Thresholdsnn Onboard LDO or External NMOS LDO for DRVCCnn EXTVCC LDO Powers Drivers from VOUTnn Phase-Lockable Frequency (75kHz to 850kHz)nn Programmable Fixed Frequency (50kHz to 900kHz)nn Selectable Continuous, Pulse-Skipping or Low RippleBurst Mode® Operation at Light Loadsnn Adjustable Burst Clampnn Power Good Output Voltage Monitornn Programmable Input Overvoltage Lockoutnn Small 24-Lead 4mm × 5mm QFN or TSSOP Packages
Typical applications
- High Voltage Battery Operated Systems
- Automotive and Industrial Power Systems,Telecommunications Power Systems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | Material | LR (µH) | fres (MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443310330 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet 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-HCC SMT High Current Cube Inductor | 3.3 | 15.5 | 19.2 | 38.9 | 7.7 | Iron Powder | 3.2 | 50 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443310330 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | Material | LR (µH) | fres (MHz) | Samples |
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