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Overview
| Topology | Buck Converter |
| Input voltage | 4-35 V |
| Switching frequency | 300-2400 kHz |
| Output 1 | 5 V / 2 A |
Description
It is a wide input voltage Buck converter controller, capable to delivering 2A from 4-35VSwitching Freq. is 300kHz and 2Mhz
Features
Automotive AEC-Q100 qualifiedWithstands surge input to 40 VIN for load dumpOperates down to 3.4 VIN (typ), 3.6 VIN (max) for idle stopUtilizes pulse-frequency modulation (PFM) for low-IQ mode10 μA Sleep mode (automatic PWM / Low-IQ PFM mode selection)Fixed output voltage options: 3.3 or 5 V with ±1% accuracyDelivers up to 2 A of output currentIntegrated 110 mΩ high-side MOSFETAdjustable switching frequency from 300 kHz to 2.4 MHzEMI reduction features: Frequency ditheringControlled switching node
External synchronization capabilityMaximum duty cycle for low dropoutActive low NPOR output with 7.5 ms delayPre-bias startup capable: VOUT increases monotonically, will not cause a resetExternal compensation for maximum flexibilityStable with ceramic or electrolytic output capacitorsInternally fixed soft-start time of 5 msPulse-by-pulse current limit, hiccup mode short-circuit, and thermal protectionsPin open/short and component fault tolerant–40°C to 150°C operating junction temperature rangeThermally enhanced DFN-10 surface-mount package
Typical applications
- Navigation
- Instrument clusters
- Industrial
- Home audio
- Network and telecom
- Audio systems
- HVAC
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) | fres(MHz) | Mount | IR,40K(A) | Size | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LHMI SMT Power Inductor, 4.7 µH, 5.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance4.7 µH | Performance Rated Current5.35 A | Saturation Current @ 10%7.5 A | Saturation Current @ 30%15.5 A | DC Resistance40 mΩ | Self Resonant Frequency22 MHz | MountSMT | Rated Current3.8 A | Size7030 | – | ||||
 | WE-PD SMT Power Inductor, 22 µH, 5.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance22 µH | Performance Rated Current5.8 A | Saturation Current @ 10%5 A | Saturation Current @ 30%6.5 A | DC Resistance35 mΩ | Self Resonant Frequency12 MHz | MountSMT | Rated Current4.6 A | Size1280 | VersionStandard |