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System (Graphic
System (Graphic
MB) with 5V or 12V Power
Graphic Cards (AGP 8X
4X
PCI Express*16)
3.3V to 12V Input DC/DC Regulators
Low Voltage Distributed Power Supplies
Wide Input Voltage Range : 3V to 13.2V
Wide Input Voltage Range : 3V to 13.2V
Embedded Switching Boot Diode
0.8V ±1%
0.6V ±1.5% Internal Reference
Shoot-Through Protection and Short Pulse Free Technology for Gate Drivers
Fixed Frequency 300kHz
Internal Soft-Start
Over Current Protection by Sensing MOSFET RDS(ON)
Enable/Shutdown Control
Drives Two N-MOSFETs
Full Duty Cycle : 0% to 85%
Fast Transient Response
Voltage Mode PWM Control with External Feedback Loop Compensation
Pinless LGATE Over Current Setting (LGOCS)
Over Voltage Protection
Under Voltage Protection
SOP-8 and SOP-8 (Exposed Pad) Packages
RoHS Compliant and Halogen Free
Single-Phase Synchronous Buck PWM Controller
The RT8120E/F is a single-phase synchronous buck PWM DC/DC controller designed ,to drive two N-MOSFET. It provides a highly accurate, programmable output ,voltage precisely regulated to low voltage requirements with an internal 0.8V ,±1% ( option for 0.6V ±1.5%) reference. The RT8120E/F uses a single feedback ,loop voltage mode PWM control for fast transient response. An oscillator with ,fixed frequency 300kHz reduces the external inductor and capacitor component ,size for saving PCB board area. The RT8120E/F provides fast transient response ,to satisfy high current output applications while minimizing external ,components. It is suitable for high performance graphic processors, DDR and VTT ,power. The RT8120E/F incorporates an externally compensated error amplifier and ,an internal soft-start and output enable. The RT8120E/F comes in SOP-8 and ,SOP-8 (Exposed Pad) packages.,,
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