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RT9202B

Richtek
Part Number RT9202B
Manufacturer Richtek
Description Single Synchronous Buck PWM DC-DC Controller
Published Dec 26, 2013
Detailed Description RT9202B Single Synchronous Buck PWM DC-DC Controller General Description The RT9202B is a single power supply PWM DC-DC ...
Datasheet PDF File RT9202B PDF File

RT9202B
RT9202B

Overview
RT9202B Single Synchronous Buck PWM DC-DC Controller General Description The RT9202B is a single power supply PWM DC-DC converter controller designed to drive N-MOSFET in a synchronous buck topology.
The IC integrates the control, output adjustment, monitoring and protection functions in a small 8-pin package.
The RT9202B uses a low gain voltage mode PWM control for simple application design.
An internal 0.
8V reference allows the output voltage to be precisely regulated to low voltage requirement.
A fixed 300kHz oscillator reduces the component size for saving board space.
The RT9202B features over current protection, over voltage protection, and under voltage lock-out.
The output current is monitored by sensing the voltage drop across the MOSFET's RDS(ON), which eliminates the need for a current sensing resistor.
Features l l l l l l l l l l l l Operate From 5V 0.
8V Internal Reference Drive Two N-MOSFETs Voltage Mode PWM Control Fast Transient Response Fixed 300kHz Oscillator Frequency Full 0 to 100% Duty Cycle Internal Soft Start Adaptive Non-Overlapping Gate Driver Over-Current Monitor Uses MOSFET RDS(ON) Over-Voltage Protection Uses Low-Side MOSFET RoHS Compliant and 100% Lead (Pb)-Free Applications l l Ordering Information RT9202B Package Type S : SOP-8 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Note : RichTek Pb-free and Green 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.
}100% matte tin (Sn) plating.
l l l l l l l Motherboard Power Regulation for Computers Subsystems Power Supplies Cable Modems, Set Top Box, and DSL Modems DSP and Core Communications processor Supplies Memory Power Supplies Personal Computer Peripherals Industrial Power Supplies 5V-Input DC-DC Regulators Low Voltage Distributed Power Supplies Pin Configurations (TOP VIEW) BOOT UGATE GND LGATE 2 3 4 8 7 6 ...


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