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Overview
| Topology | Boost Converter |
| Input voltage | 2.8-36 V |
| Output 1 | 36 V |
| IC revision | 0.2 |
Description
XR4981A is a high efficiency synchronous boost controller that converts from 2.8V~36V input range and up to 36Voutput voltage with two outside N-channel MOSFETs for the synchronous switches.The XR4981A includes adjustable current limit, adjustable soft-start, adjustable compensation net and thermal shutdown preventing damage in the event of an output overload.For different application we can select suitable compensation net、current limit soft start and select suitable MOSFET toobtain a high efficiency
Features
- 2.8V~36V input voltage range
- Adjustable output voltage from 5V to 36V
- 1.21V VFB reference voltage
- Adjustable current limit
- Adjustable soft-start
- Adjustable compensation net
- Input under voltage lockout
- 400KHz fixed switching frequency
- Thermal shutdown
- QFN3x3-16 Package Rohs Compliant and Halogen Free
Typical applications
- 5V/9V/12V BUS Power Supply / Power Amplify Device
- Type C USB Device
- Power Bank
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | RDC max.(mΩ) | LR(µH) | RDC typ.(mΩ) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 2.2 µH, 10.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance2.2 µH | Performance Rated Current10.2 A | Saturation Current @ 10%5.6 A | Saturation Current @ 30%13 A | DC Resistance11.4 mΩ | Self Resonant Frequency52 MHz | MaterialSuperflux | DC Resistance12.54 mΩ | Rated Inductance1.75 µH | – | MountSMT | ||||
 | WE-HCC SMT High Current Cube Inductor, 2.2 µH, 17.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance2.2 µH | Performance Rated Current17.4 A | Saturation Current @ 10%22.5 A | Saturation Current @ 30%25.6 A | – | Self Resonant Frequency80 MHz | MaterialFerrite | DC Resistance4.8 mΩ | Rated Inductance2.1 µH | DC Resistance4.6 mΩ | MountSMT | ||||
 | WE-XHMI SMT Power Inductor, 2.2 µH, 21.85 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMI SMT Power Inductor | Inductance2.2 µH | Performance Rated Current21.85 A | Saturation Current @ 10%12.55 A | Saturation Current @ 30%26.45 A | DC Resistance3.7 mΩ | Self Resonant Frequency33 MHz | – | DC Resistance4.07 mΩ | – | DC Resistance3.7 mΩ | MountSMT | ||||
 | WE-LHMI SMT Power Inductor, 2.2 µH, 9.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance2.2 µH | Performance Rated Current9.9 A | Saturation Current @ 10%10.5 A | Saturation Current @ 30%19.1 A | – | Self Resonant Frequency30 MHz | – | DC Resistance12 mΩ | – | DC Resistance11.2 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 2.2 µH, 14.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance2.2 µH | Performance Rated Current14.3 A | Saturation Current @ 10%18.1 A | Saturation Current @ 30%38.7 A | – | Self Resonant Frequency27 MHz | – | DC Resistance7 mΩ | – | DC Resistance6.5 mΩ | MountSMT |