MIC5163YMM Micrel Inc, MIC5163YMM Datasheet - Page 9

• Manufacturer Part Number: MIC5163YMM
• Description: IC REG CTLR DUAL MEM TERM 10MSOP
• Manufacturer: Micrel Inc

Specifications of MIC5163YMM

• Applications: Controller, DDR3, GDDR3/4/5
• Voltage - Input: 0.75 ~ 6 V
• Number Of Outputs: 1
• Voltage - Output: Programmable
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3482-5

Functional Description
The MIC5163 is a high performance linear controller,
utilizing scalable N-Channel MOSFETs to provide
JEDEC compliant bus termination. Termination is
achieved by dividing down the V
providing the reference (V
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.
V
The V
current through the high side N-Channel and the
reference voltage to the device. The MIC5163 can
operate at V
bypass capacitance will increase performance by
improving the source impedance at higher frequencies.
V
V
V
by V
large signal transient response, Oscons and ceramics
are recommended on V
bulk charge storage while the smaller ceramic capacitors
provide current during the fast edges of the bus
transition.
Micrel, Inc.
April 2009
DDQ
TT
TT
REF
is the actual termination point. V
. Due to high speed signaling, the load current seen
TT
DDQ
is constantly changing. To maintain adequate
pin on the MIC5163 provides the source
DDQ
input voltages as low as 0.75V. A
TT
. The Oscon capacitors provide
REF
) voltage. The MIC5163
DDQ
voltage by a half,
TT
is regulated to
9
V
Two resistors dividing down the V
V
minimum capacitor value of 120pF from V
is mandatory.
V
V
provides the drive voltage to enhance the external N-
Channel
recommended for bypassing the V
Feedback and Compensation
The feedback provides the path for the error amplifier to
regulate the V
between the feedback and V
should not exceed 10kΩ and compensation capacitors
should not be less than 40pF.
Enable
The MIC5163 features an active high enable input. In the
off mode state, leakage currents are reduced to
microamperes.
compatible with TTL/CMOS for simple logic interfacing.
The enable pin can be tied directly to V
functionality.
REF
REF
CC
CC
. The resistors are valued at around 17kΩ. A
supplies the internal circuitry of the MIC5163 and
MOSFETs.
TT
. An external resistor must be placed
The
enable
A
TT
small
. Feedback resistor values
input
CC
DDQ
1μF
pin.
M9999-042209-A
has
voltage provide
DDQ
REF
capacitor
thresholds
MIC5163
or V
to ground
CC
for
is