W83310S-R2 Datasheet, PDF (4/13 Pages) Winbond – Bus Termination Regulator

W83310S-R2/W83310G-R2
1. GENERAL DESCRIPTION
The W83310S-R2 is a linear regulator which provides achieves peak 2.0 Amp/cont. 1.8 Amp bi-
directional sinking and driving capability for DDR SDRAM bus terminator application. The chip simply
implement a stable power supply which can track half of input power dynamically for bus terminator
with a single chip; that is the chip integrates two power MOSFETs. There is no any external power
device needed. The W83310S-R2 is promoted with small footprint 8-SOP 150mil package. With
W83301S-R2 design, a high integration, high performance, and cost-effective solution is promoted.
2. FEATURES
y Regulates a bi-directional power with driving and sinking capability
y Provides achieve peak 2.0 Amp/cont. 1.8 Amp driving and sinking current
y Power MOSFET integrated
y Low external component count
y Low output voltage offset
y Operates with +3.3V and +2.5V control power
y Small package
y Low cost and easy to use
3. APPLICATIONS
y DDR Bus Termination Regulator
y Active Termination Bus
y SSTL-2
y SSTL-3
Publication Release Date: January 17, 2005
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Revision 0.53