
Semiconductor Components Industries, LLC, 2006
April, 2006 Rev. 11
1
Publication Order Number:
NCP5201/D
NCP5201
Dual Output
DDR Power Controller
The NCP5201 Dual DDR Power Controller is specifically
designed as a total power solution for a high current DDR memory
system. This IC combines the efficiency of a PWM controller for the
VDDQ supply with the simplicity of a linear regulator for the VTT
memory termination voltage. The secondary regulator (VTT) is
designed to automatically track at half the primary regulator voltage
(VDDQ). An internal power good voltage monitor tracks both
VDDQ and VTT outputs and notifies the user in the event of a fault
on either output. Protective features include softstart circuitry and
undervoltage monitoring of VCC and VSTBY. The IC is packaged in
a 5
×
6 QFN18.
Features
Incorporates VDDQ, VTT Regulators
Internal Switching Standby Regulator for VDDQ
All External Power MOSFETs Are NChannel
Adjustable VDDQ
VTT Tracks VDDQ/2
Fixed Switching Frequency of 250 kHz for VDDQ in Normal Mode
Doubled Switching Frequency (500 kHz) for Standby Mode
SoftStart Protection for VDDQ
Undervoltage Monitor
ShortCircuit Protection for Both VDDQ and VTT Outputs
Housed in a space saving 5
×
6 QFN18
PbFree Packages are Available*
Typical Applications
DDR Termination Voltage
Active Termination Busses (SSTL2, SSTL3)
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
NCP5201MN
18Lead QFN
61 Units / Rail
MARKING
DIAGRAM
PIN CONNECTIONS
A
WL
YY
WW = Work Week
= PbFree Package
(Note: Microdot may be in either location)
= Assembly Location
= Wafer Lot
= Year
18LEAD QFN, 5 x 6 mm
MN SUFFIX
CASE 505
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
FBDDQ
FBVTT
PGND
VSTBY
VTT
VTT
OCDDQ
VDDQ
NC
SS
COMP
VCC
TGDDQ
BGDDQ
SDDQ
AGND
S3_EN
PWRGD
NCP5201MNR2
18Lead QFN
2500/Tape & Reel
1
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
NOTE:
Pin 19 is the thermal pad on the bottom of
the device.
NCP5201
AWLYYWW
1
NCP5201MNR2G
18Lead QFN
(PbFree)
2500/Tape & Reel
NCP5201MNG
61 Units / Rail
18Lead QFN
(PbFree)