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MIC5163YMM

P1-P3P4-P6P7-P9P10-P12P13-P15
MIC5163
Dual Regulator Controller for DDR3
GDDR3/4/5 Memory Termination
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
General Description
The MIC5163 is a dual regulator controller designed
specifically for low voltage memory termination
applications such as DDR3 and GDDR3/4/5. The MIC5163
offers a simple, low cost JEDEC compliant solution for
terminating high-speed, low-voltage digital buses.
The MIC5163 controls two external N-Channel MOSFETs
to form two separate regulators. It operates by switching
between either the high-side MOSFET or the low-side
MOSFET, depending on whether the current is being
sourced to the load or being sinked by the regulator.
Designed to provide a universal solution for memory
termination regardless of input voltage, output voltage, or
load current; the desired MIC5163 output voltage can be
externally programmed by forcing the reference voltage.
The MIC5163 operates from an input voltage as low as
0.75V up to 6V, with a second bias supply input required
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.
Features
• 0.75V to 6V input supply voltage
• Memory termination for: DDR3, GDDR3/4/5
• Tracking programmable output
• Logic controlled enable input
• Wide bandwidth
• Minimal external components required
• Tiny MSOP-10 package
• –40°C < T
J
< +125°C
Applications
• Desktop Computers
• Servers
• Notebook computers
• Workstations
____________________________________________________________________________________________________________
Typical Application
100µF
6.3V
EN
120pF
V
CC
= 5V
V
DDQ
= 1.2V
U1
MIC5163
VDDQ
VCC HSD
VREF
EN
LSD
FB
COMP
100µF
6.3V
V
TT
= 0.6V
GND
GND
1µF
10V
SUD50N02-06P
220pF
GND
SUD50N02-06P
100µF
6.3V
100µF
6.3V
MIC5163 as a DDR3 Memory Termination Device for 3.5A application
Micrel, Inc. MIC5163
April 2009 2
M9999-042209-A
Ordering Information
Part Number Temperature Range Package Lead Finish
MIC5163YMM –40° to +125°C 10-Pin MSOP Pb-Free
Note: MSOP is a Green RoHs compliant package. Lead finish is NiPdAu. Mold compound is halogen free.
Pin Configuration
GND FB65
1VCC
EN
VDD
Q
VREF
10 NC
HD
LD
COMP
9
8
7
2
3
4
10-Pin MSOP (MM)
Pin Description
Pin Number Pin Name Pin Function
1 VCC
Bias Supply (Input): Apply a voltage between +3V and +6V to this input for
internal bias to the controller
2 EN
Enable (Input): CMOS compatible input. Logic high = enable, logic low =
shutdown
3 VDDQ Input Supply Voltage
4 VREF Reference output equal to half of VDDQ
5 GND Ground
6 FB Feedback input to the internal error amplifier
7 COMP
Compensation (Output): Connect a capacitor to feedback pin for compensation
of the internal control loop
8 LD Low-side drive: Connects to the Gate of the external low-side MOSFET
9 HD High-side drive: Connects to the Gate of the external high-side MOSFET
10 NC Not internally connected
Micrel, Inc. MIC5163
April 2009 3
M9999-042209-A
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 Condition
Min Typ Max Units
V
REF
Voltage Accuracy
-1% 0.5V
DDQ
+1% V
V
TT
Voltage Accuracy (Note 5) Sourcing; 100mA to 3A
-5
-10
0.4 +5
+10
mV
mV
Sinking; -100mA to -3A
-5
-10
0.4 +5
+10
mV
mV
Supply Current (I
DDQ
) V
EN
= 1.2V (controller ON)
No Load
35 70
100
µA
µA
Supply Current (I
CC
) No Load
10.5 20
25
mA
mA
I
CC
Shutdown Current (Note 6) V
EN
= 0.2V (controller OFF)
45 90 nA
Start-up Time (Note 7) V
CC
= 5V external bias; V
EN
= V
CC
8 15
30
µs
µs
Enable Input
Regulator Enable 1.2
V
Enable Input Threshold
Regulator Shutdown
0.3
V
Enable Hysteresis
35 mV
V
IL
< 0.2V (controller shutdown)
0.011 µA
Enable Pin Input Current
V
IH
> 1.2V (controller enable)
5.75 µA
Driver
High Side MOSFET Fully ON 4.8
4.97 V
High Side Gate Drive Voltage
High Side MOSFET Fully OFF
0.03
0.2
V
Low Side MOSFET Fully ON 4.8
4.97 V
Low Side Gate Drive Voltage
Low Side MOSFET Fully OFF
0.03
0.2
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, 1.5k 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.
P1-P3P4-P6P7-P9P10-P12P13-P15

MIC5163YMM

Mfr. #:
Buy MIC5163YMM
Manufacturer:
Microchip Technology / Micrel
Description:
Power Management Specialized - PMIC Dual Regulator Controller for DDR2/3 Termination
Lifecycle:
New from this manufacturer.
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