RT6283B
RT6283B is 500kHz Synchronous Step-Down Converter manufactured by Richtek.
Description
The RT6283B is a high efficiency, current mode synchronous step-down DC-DC converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 30V. The device integrates a 150mΩ high side and a 80mΩ low side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture supports fast transient response and simple pensation circuit.
A cycle-by-cycle current limit function provides protection against shorted output and an internal soft-start eliminates input current surge during start-up. The RT6283B provides plete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.
The RT6283B is available in the thermal enhanced SOP-8 (Exposed Pad) package.
Ordering Information
Package Type SP : SOP-8 (Exposed Pad-Option 2) Lead Plating System G : Green (Halogen Free and Pb Free)
Note : Richtek products are :
Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in Sn Pb or Pb-free soldering processes.
Features
- 4.5V to 30V Input Voltage Range
- 3A Output Current
- Internal N-MOSFETs
- Current Mode Control
- Fixed Frequency Operation : 500k Hz
- Adjustable Output Voltage from 0.8V to 24V
- High Efficiency Up to 95%
- Stable with Low ESR Ceramic Output Capacitors
- Cycle-by-Cycle Current Limit
- Input Under-Voltage Lockout
- Output Under-Voltage Protection
- Thermal Shutdown Protection
- Adjustable Current Limit
- Power Saving Mode for High Efficiency at Light
Load
- Ro HS pliant and Halogen Free
Applications
- Distributed Power Systems
- Pre-Regulator for Linear Regulators
- Notebook puters
- Point of Load Regulator in Distributed Power System
- Digital Set-top Boxes
- Personal Digital Recorders
- Broadband munications
- Flat Panel TVs and Monitors
- Vehicle Electronics
Simplified Application Circuit
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