W83310S/W83310SG
Winbond
Bus Termination Regulator
With
Over Temp. & Current Limit
Protection
W83310S
W83310SG
W83310S/W83310SG
Publication Release Date: Oct. 2006
-I- Revision 1.0
W83310S
Datasheet Revision History
PAGES DATES VERSION VERSION
ON WEB MAIN CONTENTS
1. Oct./03 0.5 N.A.
All versions before 0.5 are for internal use
only.
2. 3,9 Oct./03 0.51 N.A. AC spec. and typical waveform update.
3 12 Feb./04 0.60 N.A. Add the thermal data.
4 3 Jul./04 0.61 N.A. Add min./typ. value of VIN.
5 2,3,11 Jan./06 0.7 N.A Modify application circuit, AC characteristic
and add Pb-free part no: W83310SG.
6 13 Oct./06 1.0 N.A Update ordering information and official
release of version 1.0
W83310S/W83310SG
-II-
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 1
2. FEATURES ................................................................................................................................. 1
3. APPLICATIONS .......................................................................................................................... 1
4. PIN CONFIGURATION AND DESCRIPTION ............................................................................ 2
5. APPLICATION CIRCUIT.............................................................................................................3
6. INTERNAL BLOCK DIAGRAM- W83310S ................................................................................. 4
7. ELECTRICAL CHARACTERISTICS........................................................................................... 5
7.1 AC CHARACTERISTICS................................................................................................ 5
8. TYPICAL OPERATING WAVEFORM......................................................................................... 6
9. PACKAGE DIMENSION (POWER SOP-8) .............................................................................. 12
10. THERMAL PERFORMANCE.................................................................................................... 13
11. ORDERING INFORMATION .................................................................................................... 13
12. HOW TO READ THE TOP MARKING...................................................................................... 13
W83310S/W83310SG
Publication Release Date: Oct. 2006
-1- Revision 1.0
1. GENERAL DESCRIPTION
The W83310S is a linear regulator which provides achieves continuous 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 is promoted with SOP-8 power package. With W83310S 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 continuous 1.8Amp 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 Current limit protection
y Over temperature protection
y Power package SOP-8
y Low cost and easy to use
3. APPLICATIONS
y DDR and DDR II Bus Termination Regulator
y Active Termination Bus
y SSTL-2
y SSTL-3
W83310S/W83310SG
-2-
4. PIN CONFIGURATION AND DESCRIPTION
SYMBOL PIN FUNCTION
VIN 1 Power input pin.
GND 2 Ground.
VREF 3 Reference voltage and Chip enable.
VOUT 4 Output voltage.
NC 5 No function
VCNTL 6 Gate drive voltage.
NC 7 No function
NC 8 No function
VIN
GND
VREF
VOUT
NC
NC
VCNTL
NC
1
2
3
4
8
7
6
5
inbond
W83310S
W83310S/W83310SG
Publication Release Date: Oct. 2006
-3- Revision 1.0
5. APPLICATION CIRCUIT
C5
1000u
U1
W83310S/SG
VIN
GND
VREF
VOUT
NC
NC
VCNTL
NC
Note:
R3=1 Kohm reserve for sink internal bias when VCNTL is not present but VIN is present.
2.5VSTR
C4
1u
C2
1u
R2
100K
R3
1K
R1
100K
R4
1K
R4=1 Kohm reserve for VOUT discharge or sink internal bias when VIN is not present but VCNTL is present.
C3
1u
2.5VSTR/VCC3
ENABLE#
3.3VDL/VCC3C1
1000u
Q1
2N7002
3
1
2
W83310S/W83310SG
-4-
6. INTERNAL BLOCK DIAGRAM- W83310S
VCNTL VIN
VREF VOUT
GN
Control
Logic
Circuit
Current
Limit &
OTP
W83310S/W83310SG
Publication Release Date: Oct. 2006
-5- Revision 1.0
7. ELECTRICAL CHARACTERISTICS
7.1 AC CHARACTERISTICS
W83310S
VIN=2.5V,VCNTL=3.3V,VREF=1.25V,COUT=100UF, TA = 0
°
C TO +70
°
C
PARAMETER SYMBOL MIN TYP MAX UNITS TEST
CONDITIONS
Output Offset Voltage VOS -20 20 mV IOUT=0A
-20 20 Loading: 0AÆ2.0A
Load Regulation -20 20
mV Loading: 0AÆ-
2.0A
VIN 1.7 2.5/1.8 3.63
Input Voltage Range VCNTL 3.3 3.63 V
Operating Current of
VCNTL IVCNTL 1 1.5 mA No Load(IOUT=0A)
Operating Current of VIN IVIN 1 mA No Load(IOUT=0A)
0.8 V Output=High
Shutdown Threshold
Trigger 0.2 V Output=Low
Shutdown Current of VIN ISHDN 50 uA
VREF<0.2V
Loading=50 mA
Short Current Limit ILMT 4 A
Output short to
GND
Over Temperature
Protection OTP 130 145 ℃
Note: Load regulation is tested with a 1ms duty pulse current and measuring VOUT.
W83310S/W83310SG
-6-
8. TYPICAL OPERATING WAVEFORM
-- Load regulation with test condition - VCTRL=3.3V; VIN=2.5V; VOUT=1.25V; 2.0Amp 1ms duty pulse
driving current. ΔV ≈ 6mV.
-- Load regulation with test condition - VCTRL=3.3V; VIN=2.5V; VOUT=1.25V; 2.0Amp 1ms duty pulse
sinking current. ΔV ≈ 2mV.
-- Load regulation with test condition - VCTRL=3.3V; VIN=2.5V; VOUT=1.25V; 1.8Amp cont. driving
current. ΔV ≈ 24mV.
W83310S/W83310SG
Publication Release Date: Oct. 2006
-7- Revision 1.0
-- Load regulation with test condition - VCTRL=3.3V; VIN=2.5V; VOUT=1.25V; 1.8Amp cont. sinking
current. ΔV ≈ 5mV
-- Power on waveform with condition: DC loading 0A; VIN Cap.: 1000uF; VOUT Cap.: 1000uF. CH1: VIN;
CH2: VOUT; CH3: VREF; CH4: Output current
W83310S/W83310SG
-8-
-- Power on waveform with condition: DC loading 1.5Amp; VIN Cap.: 1000uF; VOUT Cap.: 1000uF.
CH1: VIN; CH2: VOUT; CH3: VREF; CH4: Output current
W83310S/W83310SG
Publication Release Date: Oct. 2006
-9- Revision 1.0
-- Power off waveform with condition: DC loading 0A; VIN Cap.: 1000uF; VOUT Cap.: 1000uF. CH1: VIN;
CH2: VOUT; CH3: VREF; CH4: Output current
-- Power off waveform with condition: DC loading 1.5A; VIN Cap.: 1000uF; VOUT Cap.: 1000uF. CH1:
VIN; CH2: VOUT; CH3: VREF; CH4: Output current
W83310S/W83310SG
-10-
-- Current limit protection: CH1: VOUT CH3: output current
-- Current limit protection (cont.): CH1: VOUT; CH3: output current
W83310S/W83310SG
Publication Release Date: Oct. 2006
-11- Revision 1.0
-- Short protection and over temperature protection; CH4: output current
W83310S/W83310SG
-12-
9. PACKAGE DIMENSION (POWER SOP-8)
W83310S/W83310SG
-13-
10. THERMAL PERFORMANCE
TEST ON FOUR-LAYER (2S2P) JEDEC TEST BOARD
Component Temp. (oC)
Package Power (W)
Package Die Downset Lead Ambient
Θ jc
(oC /W)
PSOP-8 3.05 100 145 79 78 25 14.7
11. ORDERING INFORMATION
PART NUMBER PACKAGE TYPE PRODUCTION FLOW
W83310S 8L SOP-8 Commercial, 0°C to +70°C
W83310SG 8L SOP-8(Pb-free package) Commercial, 0°C to +70°C
12. HOW TO READ THE TOP MARKING
Left line: Winbond logo
1st & 2nd lines: W83310S, W83310SG (Pb-free package)
3rd line: Tracking code Tracking code 316 G A
316: Packages assembled in Year 03’, week 16
G: assembly house ID; O means OSE, G means GR, etc.
A: The IC version
W83
310S
316GA
W83
310SG
316GA
W83310S/W83310SG
-14-
Important Notice
Winbond products are not designed, intended, authorized or warranted for use as components
in systems or equipment intended for surgical implantation, atomic energy control
instruments, airplane or spaceship instruments, transportation instruments, traffic signal
instruments, combustion control instruments, or for other applications intended to support or
sustain life. Further more, Winbond products are not intended for applications wherein failure
of Winbond products could result or lead to a situation wherein personal injury, death or
severe property or environmental damage could occur.
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.
