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Overview
| Topology | Buck Converter |
| Input voltage | 24 V |
| Switching frequency | 200-1800 kHz |
| Output 1 | 12 V / 3 A |
Description
The ADP2443 is synchronous step-down, dc-to-dc regulator with an integrated 98 mΩ, high-side power metal oxide semicon-ductor field effect transistor (MOSFET) and a 35 mΩ, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm × 4 mm LFCSP package. The regulators operate from an input voltage range of 4.5 V to 36 V. The output voltage can be adjusted down to 0.6 V and deliver up to 3 A of continuous current. The fast 50 ns minimum on time allows the regulators convert high input voltage to low output voltage at high frequency. The ADP2443 uses an emulated current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The switching frequency of the ADP2443 can be programmed from 200 kHz to 1.8 MHz. The synchronization function allows the switching frequency be syn-chronized with an external clock to minimize the system noise. The ADP2443 targets high performance applications that require high efficiency and design flexibility. External compensation and an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing. Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown (TSD). The ADP2443 operates over the −40°C to +125°C operating junction temperature range and is available in a 24-lead, 4 mm × 4 mm LFCSP package.
Features
- Continuous output current: 3 A
- Input voltage: 4.5 V to 36 V
- Integrated MOSFETs: 98 mΩ/35 mΩ
- Reference voltage: 0.6 V ± 1%
- Fast minimum on time: 50 ns
- Programmable switching frequency: 200 kHz to 1.8 MHz
- Synchronizes to external clock: 200 kHz to 1.8 MHz
- Precision enable and power good
- Cycle-by-cycle current limit with hiccup protection
- External compensation
- Programmable soft start time
- Startup into a precharged output
- Supported by ADIsimPower design tool
Typical applications
- Healthcare and medical
- Process control and industrial automation
- Intermediate power rail conversion, Multicell battery powered systems
- Networking and servers
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) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCC SMT High Current Cube Inductor, 0.68 µH, 27.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance0.68 µH | Performance Rated Current27.2 A | Saturation Current @ 10%41.4 A | Saturation Current @ 30%46 A | DC Resistance2.65 mΩ | MaterialFerrite | Rated Inductance0.67 µH | Self Resonant Frequency140 MHz | MountSMT | ||||
 | WE-LHMI SMT Power Inductor, 0.68 µH, 16.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.68 µH | Performance Rated Current16.7 A | Saturation Current @ 10%18.8 A | Saturation Current @ 30%33.8 A | DC Resistance4.5 mΩ | – | – | Self Resonant Frequency73 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 0.82 µH, 27.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance0.82 µH | Performance Rated Current27.2 A | Saturation Current @ 10%36.8 A | Saturation Current @ 30%41.9 A | DC Resistance2.65 mΩ | MaterialFerrite | Rated Inductance0.81 µH | Self Resonant Frequency120 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 0.82 µH, 15.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.82 µH | Performance Rated Current15.5 A | Saturation Current @ 10%17.4 A | Saturation Current @ 30%31.6 A | DC Resistance4.9 mΩ | – | – | Self Resonant Frequency70 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 1 µH, 27.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance1 µH | Performance Rated Current27.2 A | Saturation Current @ 10%26.5 A | Saturation Current @ 30%31.1 A | DC Resistance2.65 mΩ | MaterialFerrite | Rated Inductance0.95 µH | Self Resonant Frequency100 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 1 µH, 13.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance1 µH | Performance Rated Current13.4 A | Saturation Current @ 10%13 A | Saturation Current @ 30%25.8 A | DC Resistance6.5 mΩ | – | – | Self Resonant Frequency51 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 1.5 µH, 21.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance1.5 µH | Performance Rated Current21.7 A | Saturation Current @ 10%26.8 A | Saturation Current @ 30%31 A | DC Resistance4 mΩ | MaterialFerrite | Rated Inductance1.45 µH | Self Resonant Frequency78 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 1.5 µH, 11.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance1.5 µH | Performance Rated Current11.3 A | Saturation Current @ 10%9.7 A | Saturation Current @ 30%18.7 A | DC Resistance9 mΩ | – | – | Self Resonant Frequency35 MHz | 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 | DC Resistance4.8 mΩ | MaterialFerrite | Rated Inductance2.1 µH | Self Resonant Frequency80 MHz | 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 | DC Resistance12 mΩ | – | – | Self Resonant Frequency30 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 3.3 µH, 14.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance3.3 µH | Performance Rated Current14.1 A | Saturation Current @ 10%19.3 A | Saturation Current @ 30%22.8 A | DC Resistance7.15 mΩ | MaterialFerrite | Rated Inductance2.6 µH | Self Resonant Frequency51 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 3.3 µH, 7.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance3.3 µH | Performance Rated Current7.5 A | Saturation Current @ 10%7.9 A | Saturation Current @ 30%15.1 A | DC Resistance20.9 mΩ | – | – | Self Resonant Frequency26 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 4.7 µH, 11.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance4.7 µH | Performance Rated Current11.3 A | Saturation Current @ 10%15 A | Saturation Current @ 30%17.9 A | DC Resistance9.9 mΩ | MaterialFerrite | Rated Inductance3.8 µH | Self Resonant Frequency49 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 4.7 µH, 6.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance4.7 µH | Performance Rated Current6.2 A | Saturation Current @ 10%7.5 A | Saturation Current @ 30%14.6 A | DC Resistance30.8 mΩ | – | – | Self Resonant Frequency24 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 6.8 µH, 8.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance6.8 µH | Performance Rated Current8.9 A | Saturation Current @ 10%12.4 A | Saturation Current @ 30%16.6 A | DC Resistance15 mΩ | MaterialFerrite | Rated Inductance4.5 µH | Self Resonant Frequency40 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 6.8 µH, 4.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance6.8 µH | Performance Rated Current4.8 A | Saturation Current @ 10%6.3 A | Saturation Current @ 30%13.1 A | DC Resistance51.5 mΩ | – | – | Self Resonant Frequency16 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 8.2 µH, 8.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance8.2 µH | Performance Rated Current8.9 A | Saturation Current @ 10%9.3 A | Saturation Current @ 30%12.5 A | DC Resistance15 mΩ | MaterialFerrite | Rated Inductance2.8 µH | Self Resonant Frequency36 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 8.2 µH, 4.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance8.2 µH | Performance Rated Current4.35 A | Saturation Current @ 10%6 A | Saturation Current @ 30%12.2 A | DC Resistance63 mΩ | – | – | Self Resonant Frequency15 MHz | MountSMT | ||||
| WE-HCC SMT High Current Cube Inductor, 10 µH, 6.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance10 µH | Performance Rated Current6.7 A | Saturation Current @ 10%9.4 A | Saturation Current @ 30%11.7 A | DC Resistance23.1 mΩ | MaterialFerrite | Rated Inductance5.5 µH | Self Resonant Frequency35 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 10 µH, 4.05 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance10 µH | Performance Rated Current4.05 A | Saturation Current @ 10%5.6 A | Saturation Current @ 30%10.5 A | DC Resistance69 mΩ | – | – | Self Resonant Frequency12 MHz | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 22 µH, 2.75 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance22 µH | Performance Rated Current2.75 A | Saturation Current @ 10%4.15 A | Saturation Current @ 30%8.5 A | DC Resistance170 mΩ | – | – | Self Resonant Frequency8 MHz | MountSMT |