Winbond
Bus Termination Regulator
W83310U
W83310UG
W83310U, W83310UG
W83310U
Data Sheet Revision History
PAGES
DATES
VERSION
VERSION
ON WEB
MAIN CONTENTS
1.
2.
3
4
03/Mar.
04/Feb.
05/Mar.
06/Jan.
0.5
0.51
0.6
0.7
N.A.
N.A.
N.A
N.A
All versions before 0.5 are for internal use
only
Add the thermal data inside
Update the package dimension data.
Add pb-free part no:W83310UG
Please note that all data and specifications are subject to change without notice. All the trademarks of
products and companies mentioned in this datasheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where
malfunction of these products can reasonably be expected to result in personal injury. Winbond
customers using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
-I-
Publication Release Date: January 17, 2006
Revision 0.7
W83310U, W83310UG
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
GENERAL DESCRIPTION ......................................................................................................... 1
FEATURES ................................................................................................................................. 1
APPLICATIONS .......................................................................................................................... 1
PIN CONFIGURATION AND DESCRIPTION ............................................................................ 2
APPLICATION CIRCUIT............................................................................................................. 3
INTERNAL BLOCK DIAGRAM ................................................................................................... 4
ELECTRICAL CHARACTERISTICS........................................................................................... 5
7.1
AC CHARACTERISTICS................................................................................................ 5
TYPICAL OPERATING WAVEFORM......................................................................................... 6
PACKAGE DIMENSION (TO252-5L).......................................................................................... 8
THERMAL PERFORMANCE...................................................................................................... 9
ORDERING INFORMATION ...................................................................................................... 9
HOW TO READ THE TOP MARKING........................................................................................ 9
-II-
W83310U, W83310UG
1. GENERAL DESCRIPTION
The W83310U is a linear regulator which provides achieves continuous 2.0 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
W83310U is promoted with TO252 power package. With W83310U design, a high integration, high
performance, and cost-effective solution is promoted.
2. FEATURES
Regulates a bi-directional power with driving and sinking capability
Provides achieve continuous 2.0Amp driving and sinking current
Power MOSFET integrated
Low external component count
Low output voltage offset
Operates with +3.3V and +2.5V control power
Power package TO252-5L
Low cost and easy to use
3. APPLICATIONS
DDR and DDR II Bus Termination Regulator
Active Termination Bus
SSTL-2
SSTL-3
-1-
Publication Release Date: January 17, 2006
Revision 0.7
W83310U, W83310UG
4. PIN CONFIGURATION AND DESCRIPTION
inbond
W83310U
1
2
GND
3
V
CTRL
4
V
REF
5
V
OUT
FUNCTION
SYMBOL
PIN
VIN
GND
VCNTL
VREF
VOUT
1
2
3
4
5
VI
N
Power input pin.
Ground.
Gate drive voltage.
Reference voltage and Chip enable.
Output voltage.
-2-
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