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Overview
| Topology | Buck Converter |
| Input voltage | 2.7-5.5 V |
| Output 1 | 4 V / 2 A |
| IC revision | 001 |
Description
BD9B207NF-Z is one of the BD9Bx07NF-Z series of single synchronous buck DC/DC converter with built-in low on-resistance power MOSFETs. It can provide current up to 2 A. The output voltage can achieve a high accuracy due to ±1 % reference voltage. It features fast transient response due to constant on-time control system. The Forced PWM Mode control reduces the output voltage ripple in the whole load range. Power Good function makes it possible for system to control sequence. It achieves the high-power density and offer a small footprint on the PCB by employing 6 pins 1.5 mm x 1.5 mm small package.
Features
- Single Synchronous Buck DC/DC Converter
- Constant On-time Control
- Forced PWM Mode Control
- ±1 % Reference Voltage Accuracy
- 100 % Duty Cycle
- Power Good Output
- Output Discharge Function
- Over Voltage Protection (OVP)
- Over Current Protection (OCP)
- Short Circuit Protection (SCP)
- Thermal Shutdown Protection (TSD)
- Under Voltage Lockout Protection (UVLO)
Typical applications
- Step-down Power Supply for SoC, FPGA, and Microprocessor, Distributed Power Supply, Secondary Power Supply
- Printer, OA Equipment, Laptop PC / Tablet PC / Server, Storage Device (HDD / SSD)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT1(A) | ISAT2(A) | RDC max.(mΩ) | fres(MHz) | ISAT(A) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | VOP(V) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT Power Inductor, 0.47 µH, 2.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance0.47 µH | Rated Current2.2 A | – | – | DC Resistance95 mΩ | Self Resonant Frequency165 MHz | Saturation Current3.7 A | Performance Rated Current3.25 A | Saturation Current @ 30%4.65 A | DC Resistance76 mΩ | Operating Voltage80 V | MountSMT | ||||
 | WE-MAPI SMT Power Inductor, 0.47 µH, 2.25 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance0.47 µH | Rated Current2.25 A | – | – | DC Resistance87 mΩ | Self Resonant Frequency160 MHz | Saturation Current4.4 A | Performance Rated Current3.35 A | Saturation Current @ 30%5.65 A | DC Resistance70 mΩ | Operating Voltage80 V | MountSMT | ||||
 | WE-MAPI SMT Power Inductor, 0.47 µH, 3.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance0.47 µH | Rated Current3.2 A | – | – | DC Resistance48 mΩ | Self Resonant Frequency170 MHz | Saturation Current5.5 A | Performance Rated Current4.8 A | Saturation Current @ 30%6.9 A | DC Resistance37 mΩ | Operating Voltage80 V | MountSMT | ||||
| WE-MAPI SMT Power Inductor, 0.47 µH, 3.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance0.47 µH | Rated Current3.4 A | – | – | DC Resistance40 mΩ | Self Resonant Frequency145 MHz | Saturation Current6.25 A | Performance Rated Current5.35 A | Saturation Current @ 30%8 A | DC Resistance30 mΩ | Operating Voltage80 V | MountSMT | ||||
 | WE-PMCI Power Molded Chip Inductor, 0.47 µH, 7.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.47 µH | Rated Current7.35 A | Saturation Current 13.6 A | Saturation Current 27.4 A | DC Resistance29 mΩ | Self Resonant Frequency150 MHz | Saturation Current5 A | Performance Rated Current5.75 A | Saturation Current @ 30%7.4 A | DC Resistance25 mΩ | – | MountSMT | ||||
 | WE-PMCI Power Molded Chip Inductor, 0.47 µH, 6.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.47 µH | Rated Current6.8 A | Saturation Current 13.75 A | Saturation Current 27.9 A | DC Resistance22 mΩ | Self Resonant Frequency140 MHz | Saturation Current6 A | Performance Rated Current6.8 A | Saturation Current @ 30%7.9 A | DC Resistance18 mΩ | – | MountSMT | ||||
 | WE-LQSH SMT High Saturation Power Inductor, 0.47 µH, 2.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQSH SMT High Saturation Power Inductor | Inductance0.47 µH | Rated Current2.9 A | – | – | DC Resistance35 mΩ | Self Resonant Frequency129 MHz | Saturation Current5.6 A | – | – | DC Resistance29 mΩ | – | MountSMT |