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RICHTEK RT8207GQW product image
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RICHTEK RT8207GQW

Manufacturer
RICHTEKAsian Brands
MPN
RT8207GQW
LCSC Part #
C425773
Packaging
WQFN-24-EP(4x4)
Customer #
Key Attributes
Step-down type Adjustable and Fixed WQFN-24-EP(4x4) Voltage Regulators - DC DC Switching Regulators
DatasheetRICHTEK RT8207GQW
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QtyUnit Price(Reference Only)Total Amount
1+$ 0.4353$ 0.44
10+$ 0.426$ 4.26
30+$ 0.4199$ 12.60
100+$ 0.4137$ 41.37
Standard Packaging1500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerRICHTEK
PackagingWQFN-24-EP(4x4)
Operating Temperature-40℃~+85℃
Frequency - Switching-
Number of Outputs1
FunctionStep-down type
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Protection latch;Output discharge;Operating status indication;Overcurrent Protection
Output TypeAdjustable and Fixed
TopologyBuck
Operating Voltage4.5V~26V
Switch tube (built-in/external)External
Output Voltage750mV~3.3V;1.5V;1.8V
Output Current-
Quiescent Current470uA
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Introduction

AI Translation

The RT8207 provides a complete power supply for both DDRII/DDRIII memory systems. It integrates a synchronous PWM buck controller with a 3A sink/source tracking linear regulator and a buffered low noise reference. The PWM controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low voltage 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 RT8207 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. The buck conversion allows this device to directly step down high-voltage batteries for the highest possible efficiency. The 3A sink/source LDO maintains fast transient response only requiring 20uF of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses. The RT8207 supports all of the sleep state controls placing VTT at High-Z in S3 and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5. The RT8207 has all of the protection features including thermal shutdown and is available in the WQFN-24L 4x4 package.

Features

AI Translation
  • PWM Controller Resistor Programmable Current Limit by Low-Side RDS(ON) Sense
  • Quick Load-Step Response within 100ns
  • ±1% VOUT Accuracy Over Line and Load
  • Fixed 1.8V (DDRII), 1.5V (DDRIII) or Adjustable 0.75V to 3.3V Output Range
  • Battery Input Range 4.5V to 26V
  • Resistor Programmable Frequency
  • Over/Under Voltage Protection
  • 4 Steps Current Limit During Soft-Start
  • Drives Large Synchronous-Rectifier FETs
  • Power-Good Indicator
  • 3A LDO (VTT), Buffered Reference (VTTREF)
  • Capable to Sink and Source Up to 3A
  • LDO Input Available to Optimize Power Losses
  • Requires Only 20uF Ceramic Output Capacitor
  • Buffered Low Noise 10mA VTTREF Output
  • Accuracy ±20mV for Both VTTREF and VTT
  • Supports High-Z in S3 and Soft-Off in S4/S5
  • RoHS Compliant and Halogen Free

Applications

AI Translation
  • DDRII/DDRIII Memory Power Supplies
  • Notebook Computers
  • SSTL18, SSTL15 and HSTL Bus Termination