ROHM Semiconductor BD9x Integrated MOSFET DC-DC Buck Converters
ROHM Semiconductor BD9x Integrated MOSFET DC-DC Buck Converters are synchronous buck switching regulators with built-in power MOSFETs. These ICs provide currents in a range from 1A to 6A. ROHM BD9x DC-DC Buck Converters deliver fast transient response by employing a constant on-time control system. This allows high oscillating frequency at low inductance. The devices employ an original constant on-time control method that provides low consumption at light load. This feature makes these devices ideal for equipment that demands minimal standby power consumption.
ROHM now offers new energy-saving DC-DC converter ICs in the TSOT23 (2.8mm x 2.9mm) package. These converter ICs deliver an output current of 1A to 3A. This reduces component area by up to 72% compared to the general SOP-J8 package (4.9mm x 6mm), contributing to the miniaturization of power supply blocks. A flip chip on lead frame TSOT23 package design enables high-efficiency operation by eliminating bond wire resistance.
Features
- Synchronous single DC-DC converters
- Constant on-time control suitable to Deep-SLLM
- 2.7V to 76V wide input voltage range
- 1A to 3A output current range
- 50kHz to 2MHz switching frequency range
- 0µA (typical) to 10µA (max.) standby current
- Easy to design phase/gain compensation
- Protections
- Overcurrent
- Short-circuit
- Thermal shutdown
- Undervoltage lockout
- Adjustable soft-start functionality
- Power Good output
Applications
- Step-down power supply for DSPs, FPGAs, and microprocessors
- Industrial PLCs and smart meters
- Battery management systems
- Laptop PCs/tablet PCs/servers
- LCD TVs
- Storage devices (HDDs/SSDs)
- Printers, OA equipment
- Entertainment devices
- Distributed power supplies
- Secondary power supplies
- Home appliances
Videos
Application Circuit
Performance Graph
Package Area Comparison
Additional Resources
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