340kHz Synchronous Step-Down Converter - Richtek
Description
RT8250
3A, 23V, 340kHz Synchronous Step-Down Converter
General Description
The RT8250 is a high-efficiency synchronous step-down DC/DC converter that can deliver up to 3A output current from 4.
5V to 23V input supply.
The RT8250's current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors.
Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up.
The RT8250 also provides output under voltage protection and thermal shutdown protection.
The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.
Ordering Information
RT8250
Package Type SP : SOP-8 (Exposed Pad-Option 1)
Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT8250 GSPYMDNN
RT8250GSP : Product Number YMDNN : Date Code
Features
4.
5V to 23V Input Voltage Range 1.
5% High Accuracy Feedback Voltage 3A Output Current Integrated N-MOSFET Switches Current Mode Control Fixed Frequency Operation : 340kHz Output Adjustable from 0.
925V to 20V Up to 95% Efficiency Programmable Soft-Start Stable with Low-ESR Ceramic Output Capacitors Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection Thermally Enhanced SOP-8 (Exposed Pad) Package RoHS Compliant and Halogen Free
Applications
Industrial and Commercial Low Power Systems Computer Peripherals LCD Monitors and TVs Green Electronics/Appliances Point of Load Regulation of High-Performance DSPs, FPGAs and ASICs.
Pin Configurations
(TOP VIEW)
BOOT VIN SW
GND
8
27
GND
36 9
45
SS EN COMP FB
SOP-8 (Exposed Pad)
DS8250-05 March 2011
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com 1
RT8250
Typical A...
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