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Overview
| Topology | Buck Converter |
| Input voltage | 2.8-42 V |
| Switching frequency | 200-3000 kHz |
| Output 1 | 5 V / 10 A |
Description
The LT®8638-2 synchronous step-down regulator features the Silent Switcher® architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This performance makes the LT8638-2 ideal for noise sensitive applications and environments.
Features
Silent Switcher® ArchitectureUltralow EMI EmissionsOptional Spread Spectrum ModulationHigh Efficiency at High FrequencyUp to 96% Efficiency at 1MHz, 12VIN to 5VOUTUp to 94% Efficiency at 2MHz, 12VIN to 5VOUTWide Input Voltage Range: 2.8V to 42V10A Maximum Continuous, 12A Peak Transient OutputFast Transient Response with External CompensationLow Quiescent Current Burst Mode® Operation90μA IQ Regulating 12VIN to 5VOUTOutput Ripple < 10mVP-PReference Accuracy: ±1% Over TemperatureFast Minimum Switch On-Time: 25nsPolyPhase® Operation: Up to 12 PhasesLow Dropout Under All Conditions: 45mV at 1AAdjustable and Synchronizable: 200kHz to 3MHzOutput Soft-Start and Power GoodSafely Tolerates High Reverse Current28-Lead 5mm × 4mm LQFN PackageAEC-Q100 Qualified for Automotive Applications
Typical applications
- Standard step-down converter
- Standard step-down converter
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74279221100 | SPEC | 8 files | WE-MPSB EMI Multilayer Power Suppression Bead | 10 | 41 | 2178 MHz | 10500 | 28 | 1.1 | High Current |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74279221100 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples |
|---|