MIC5163
Dual Regulator Controller for DDR3
GDDR3/4/5 Memory Termination
General Description
Features
The MIC5163 is a dual regulator controller designed
•
0.75V to 6V input supply voltage
specifically for low voltage memory termination
•
Memory termination for: DDR3, GDDR3/4/5
applications such as DDR3 and GDDR3/4/5. The MIC5163
•
Tracking programmable output
offers a simple, low cost JEDEC compliant solution for
•
Logic controlled enable input
terminating high-speed, low-voltage digital buses.
•
Wide bandwidth
The MIC5163 controls two external N-Channel MOSFETs
•
Minimal external components required
to form two separate regulators. It operates by switching
between either the high-side MOSFET or the low-side
•
Tiny MSOP-10 package
MOSFET, depending on whether the current is being
•
–40°C < T
J
< +125°C
sourced to the load or being sinked by the regulator.
Designed to provide a universal solution for memory
Applications
termination regardless of input voltage, output voltage, or
load current; the desired MIC5163 output voltage can be
•
Desktop Computers
externally programmed by forcing the reference voltage.
•
Servers
The MIC5163 operates from an input voltage as low as
•
Notebook computers
0.75V up to 6V, with a second bias supply input required
•
Workstations
for operation. The MIC5163 is available in a tiny MSOP-10
package with an operating junction temperature range of
–40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
____________________________________________________________________________________________________________
Typical Application
V
DDQ
= 1.2V
V
CC
= 5V
100µF
6.3V
100µF
6.3V
1µF
10V
120pF
U1
MIC5163
VDDQ
VCC
EN
EN
HSD
SUD50N02-06P
V
TT
= 0.6V
LSD
VREF
COMP
GND FB
SUD50N02-06P
100µF
6.3V
100µF
6.3V
220pF
GND
GND
MIC5163 as a DDR3 Memory Termination Device for 3.5A application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2009
M9999-042209-A
Micrel, Inc.
MIC5163
Ordering Information
Part Number
MIC5163YMM
Temperature Range
–40° to +125°C
Package
10-Pin MSOP
Lead Finish
Pb-Free
Note:
MSOP is a Green RoHs compliant package. Lead finish is NiPdAu. Mold compound is halogen free.
Pin Configuration
VCC
EN
VDDQ
VREF
GND
1
2
3
4
5
10-Pin MSOP (MM)
10 NC
9 HD
8 LD
7 COMP
6 FB
Pin Description
Pin Number
Pin Name
Pin Function
1
2
3
4
5
6
7
8
9
10
VCC
EN
VDDQ
VREF
GND
FB
COMP
LD
HD
NC
Bias Supply (Input): Apply a voltage between +3V and +6V to this input for
internal bias to the controller
Enable (Input): CMOS compatible input. Logic high = enable, logic low =
shutdown
Input Supply Voltage
Reference output equal to half of VDDQ
Ground
Feedback input to the internal error amplifier
Compensation (Output): Connect a capacitor to feedback pin for compensation
of the internal control loop
Low-side drive: Connects to the Gate of the external low-side MOSFET
High-side drive: Connects to the Gate of the external high-side MOSFET
Not internally connected
April 2009
2
M9999-042209-A
Micrel, Inc.
MIC5163
Absolute Maximum Ratings
(1)
Supply Voltage (V
CC
)....................................... –0.3V to +7V
Supply Voltage (V
DDQ
) ..................................... –0.3V to +7V
Enable Input Voltage (V
EN
).............................. –0.3V to +7V
Lead Temperature (soldering, 10 sec.)...................... 265°C
Storage Temperature (T
S
).........................–65°C to +150°C
EDS Rating
(3)
................................................................+2kV
Operating Ratings
(2)
Supply Voltage (V
CC
).......................................... +3V to +6V
Supply Voltage (V
DDQ
) ................................... +0.75V to +6V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
MSOP (θ
JA
) ...................................................130.5°C/W
MSOP (θ
JC
) .....................................................42.6°C/W
Electrical Characteristics
(4)
V
DDQ
= 1.35V; T
A
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C, unless noted.
Parameter
V
REF
Voltage Accuracy
V
TT
Voltage Accuracy (Note
5)
Sourcing; 100mA to 3A
Sinking; -100mA to -3A
Supply Current (I
DDQ
)
Supply Current (I
CC
)
I
CC
Shutdown Current (Note
6)
Start-up Time (Note
7)
Enable Input
Enable Input Threshold
Enable Hysteresis
Enable Pin Input Current
Driver
High Side Gate Drive Voltage
Low Side Gate Drive Voltage
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. The V
TT
voltage accuracy is measured as a delta voltage from the reference output (V
TT
- V
REF
).
6. Shutdown current is measured only on the V
CC
pin. The V
DDQ
pin will always draw a minimum amount of current when voltage is applied.
Condition
Min
-1%
-5
-10
-5
-10
Typ
0.5V
DDQ
0.4
0.4
35
10.5
45
8
Max
+1%
+5
+10
+5
+10
70
100
20
25
90
15
30
Units
V
mV
mV
mV
mV
µA
µA
mA
mA
nA
µs
µs
V
V
EN
= 1.2V (controller ON)
No Load
No Load
V
EN
= 0.2V (controller OFF)
V
CC
= 5V external bias; V
EN
= V
CC
Regulator Enable
Regulator Shutdown
1.2
0.3
35
0.011
5.75
4.8
4.8
4.97
0.03
4.97
0.03
0.2
0.2
V
mV
µA
µA
V
V
V
V
IL
< 0.2V (controller shutdown)
V
IH
> 1.2V (controller enable)
High Side MOSFET Fully ON
High Side MOSFET Fully OFF
Low Side MOSFET Fully ON
Low Side MOSFET Fully OFF
April 2009
3
M9999-042209-A
Micrel, Inc.
7. Start-up time is defined as the amount of time from EN = V
CC
to HSD = 90% of V
CC
MIC5163
Test Circuit
MIC5163
VDDQ
VCC
EN
220µF
10µF
470pF
EN
LD
120pF
C
OUT
= 3*560µF
COMP VREF
FB
GND
HD
SUD50N02-06P
V
TT
= 0.5*V
DDQ
V
DDQ
= 0.75-2.5V
V
CC
= 5V
10k
Figure 1. Test Circuit
April 2009
4
M9999-042209-A
Micrel, Inc.
MIC5163
Typical Characteristics
200
180
160
140
120
100
80
60
40
20
0
IDDQ Current
vs. Temperature
IDDQ CURRENT (µA)
IDDQ CURRENT (µA)
ICC CURRENT (µA)
V
IN
=6V
200
180
160
140
120
100
80
60
40
20
0
0
IDDQ Current
vs. Input Voltage
-40°C
11
ICC Current
vs. Temperature
V
IN
=6V
V
IN
=2.5V
Room Temp
10.5
V
IN
=2.5V
V
IN
=1.35V
125°C
10
V
IN
=1.35V
V
IN
=0.75V
V
IN
=0.75V
-40
-20
0
20
40
60
-40
-20
20
40
60
80
80
0
100
100
2
1
TEMPERATURE (°C)
2
3
4
5
INPUT VOLTAGE (V)
6
TEMPERATURE (°C)
ICC SHUTDOWN CURRENT (µA)
-40°C
ICC CURRENT (µA)
0.25
0.2
0.15
V
IN
=0.75V
ICC SHUTDOWN CURRENT (µA)
11
ICC Current
vs. Input Voltage
0.3
ICC Shutdown Current
vs. Temperature
0.3
0.25
ICC Shutdown Current
vs. Input Voltage
125°C
10.5
Room Temp
0.2
0.15
0.1
0.05
0
0
Room Temp
-40°C
10
125°C
0.1
0.05
V
IN
=1.35V
V
IN
=2.5V
V
IN
=6V
-40
-20
100
120
9.5
0
0
20
40
60
80
1
2
3
4
5
INPUT VOLTAGE (V)
6
0
1
TEMPERATURE (°C)
2
3
4
5
INPUT VOLTAGE (V)
0
20
40
60
80
100
120
1
TEMPERATURE (°C)
2
3
4
5
INPUT VOLTAGE (V)
6
TEMPERATURE (°C)
0.9
0.8
EN TH ON (V)
0.7
EN TH ON
vs. Input Voltage
-40°C
0.0025
0.002
VTT-VREF (V)
0.0015
VTT-VREF
vs. Temperature
-3A
-0.1A
3A
VTT-VREF (V)
0.005
0.004
0.003
0.002
0.001
0
-0.001
-0.002
-0.003
-0.004
-0.005
-3
VTT-VREF
vs. Load @25Deg
V
IN
=6V
V
IN
=1.35V
Room Temp
0.6
0.5
0.4
0
0.001
0.0005
0
0.1A
V
IN
=0.75V
V
IN
=2.5V
125°C
-40
-20
0
20
40
60
80
100
120
1
2
3
4
5
INPUT VOLTAGE (V)
6
-2
TEMPERATURE (°C)
-1
0
1
LOAD (A)
April 2009
5
M9999-042209-A
120
3
0
20
40
60
-40
-20
80
-40
-20
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
HD Prop Delay
vs. Temperature
HD PROP DELAY (µs)
V
IN
=0.75V
HD PROP DELAY (µs)
V
IN
=1.35V
8
7.5
7
6.5
6
5.5
5
0
-40°C
EN TH ON (V)
10
9.5
9
8.5
HD Prop Delay
vs. Input Voltage
0.9
EN TH ON
vs. Temperature
V
IN
=6V
0.8
V
IN
=2.5V
0.7
V
IN
=1.35V
Room Temp
V
IN
=6V
0.6
V
IN
=0.75V
V
IN
=2.5V
125°C
0.5
120
6
100
120
9.5
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