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RICHTEK RT8237FZQW product image
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RICHTEK RT8237FZQW

Manufacturer
RICHTEKAsian Brands
MPN
RT8237FZQW
LCSC Part #
C3003184
Packaging
WDFN-10(3x3)
Customer #
Key Attributes
High Efficiency Single Synchronous Buck PWM Controller
DatasheetRICHTEK RT8237FZQW
RoHS Compliance1 documents available
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerRICHTEK
PackagingWDFN-10(3x3)
Synchronous RectifierYes
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Protection latch;Light load efficient mode;Operating status indication;Overcurrent Protection
Number of Channels1
TopologyBuck
Operating Voltage4.5V~26V
Switch tube (built-in/external)External
Output Voltage700mV~3.3V
Operating Temperature-40℃~+125℃
Output Current10A
Frequency - Switching290kHz~430kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current500uA
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Introduction

AI Translation

The RT8237F PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers. The constant on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The RT8237F achieves high efficiency at a reduced cost by eliminating the current sense resistor found in traditional current mode PWMs. Efficiency is further enhanced by its ability to drive very large synchronous rectifier MOSFETs and enter diode emulation mode at light load condition. The Buck conversion allows this device to directly step down high voltage batteries at the highest possible efficiency. The pre-set frequency selections minimize design effort required for new designs. The RT8237F is intended for CPU core, chipset, DRAM, or other low voltage supplies as low as 0.7V. The RT8237F is available in the WDFN-10L 3x3 package.

Features

AI Translation
  • Wide Input Voltage Range : 4.5V to 26V
  • Output Voltage Range : 0.7V to 3.3V
  • Built-In 0.5% 0.7V Reference Voltage
  • Quick Load-Step Response within 100ns
  • 4700ppm/°C Current Source for Current Limit RDS(ON)
  • Adjustable Current Limit with Low Side MOSFET
  • 4 Selectable Frequency Setting
  • Soft-Start Control
  • Drives Large Synchronous-Rectifier FETs
  • Integrated Boot Switch
  • Built-In OVP/OCP/UVP
  • Thermal Shutdown
  • Power Good Indicator
  • RoHS Compliant and Halogen Free

Applications

AI Translation
  • Notebook Computers
  • CPU Core Supply
  • Chipset/RAM Supply as Low as 0.7V
  • Generic DC-DC Power Regulator