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RICHTEK RT8237EZQW(2) product image
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RICHTEK RT8237EZQW(2)

Manufacturer
RICHTEKAsian Brands
MPN
RT8237EZQW(2)
LCSC Part #
C6288617
Packaging
WDFN-10(3x3)
Customer #
Key Attributes
1 Adjustable 700mV~3.3V Step-down type WDFN-10(3x3) DC DC Switching Controllers RoHS
DatasheetRICHTEK RT8237EZQW(2)
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)
Operating Temperature-40℃~+85℃@(TA)
Synchronous RectifierYes
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Light load efficient mode;Operating status indication;Overcurrent Protection;Protection latch
Output Current-
Number of Channels1
TopologyBuck
Frequency - Switching430kHz
Operating Voltage2.7V~26V
Output TypeAdjustable
Switch tube (built-in/external)External
Output Voltage700mV~3.3V
FunctionStep-down type
Quiescent Current500uA
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Introduction

AI Translation

The RT8237E 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 RT8237E 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 RT8237E is intended for CPU core, chipset, DRAM, or other low voltage supplies as low as 0.7V. The RT8237E is available in the WDFN-10L 3x3 package.

Features

AI Translation
  • Wide Input Voltage Range : 2.7V 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