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NCP5214A Datasheet(PDF) 1 Page - ON Semiconductor

Part No. NCP5214A
Description  2−in−1 Notebook DDR Power Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP5214A Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2006
May, 2006 − Rev. 0
1
Publication Order Number:
NCP5214A/D
NCP5214A
2−in−1 Notebook DDR
Power Controller
The NCP5214A 2−in−1 Notebook DDR Power Controller is
specifically designed as a total power solution for notebook DDR
memory system. This IC combines the efficiency of a PWM
controller for the VDDQ supply with the simplicity of linear
regulators for the VTT termination voltage and the buffered low
noise reference. This IC contains a synchronous PWM buck
controller for driving two external NFETs to form the DDR memory
supply voltage (VDDQ). The DDR memory termination regulator
output voltage (VTT) and the buffered VREF are internally set to
track at the half of VDDQ. An internal power good voltage monitor
tracks VDDQ output and notifies the user whether the VDDQ output
is within target range. Protective features include soft−start
circuitries, undervoltage monitoring of supply voltage, VDDQ
overcurrent
protection, VDDQ overvoltage and undervoltage
protections, and thermal shutdown. The IC is packaged in DFN22.
Features
Incorporates VDDQ, VTT Regulator, Buffered VREF
Adjustable VDDQ Output
VTT and VREF Track VDDQ/2
Operates from Single 5.0 V Supply
Supports VDDQ Conversion Rails from 4.5 V to 24 V
Power−saving Mode for High Efficiency at Light Load
Integrated Power FETs with VTT Regulator Sourcing/Sinking
1.5 A DC and 2.4 A Peak Current
Requires Only 20 mF Ceramic Output Capacitor for VTT
Buffered Low Noise 15 mA VREF Output
All External Power MOSFETs are N−channel
<5.0 mA Current Consumption During Shutdown
Fixed Switching Frequency of 400 kHz
Soft−start Protection for VDDQ and VTT
Undervoltage Monitor of Supply Voltage
Overvoltage Protection and Undervoltage Protection for VDDQ
Short−circuit Protection for VDDQ and VTT
Thermal Shutdown
Housed in DFN22
This is a Pb−Free Device
Typical Applications
Notebook DDR/DDR2 Memory Supply and Termination Voltage
Active Termination Busses (SSTL−18, SSTL−2, SSTL−3)
DFN22
MN SUFFIX
CASE 506AF
PIN CONNECTIONS
Device
Package
Shipping†
ORDERING INFORMATION
NCP5214AMNR2G
DFN22
(Pb−Free)
2500 Tape & Reel
NCP5214A= Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
MARKING
DIAGRAM
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
http://onsemi.com
VDDQEN
VTTEN
FPWM
SS
VTTGND
VTT
VTTI
FBVTT
AGND
DDQREF
VCCA
PGND
BGDDQ
VCCP
SWDDQ
TGDDQ
BOOST
OCDDQ
PGOOD
VTTREF
FBDDQ
COMP
(Top View)
NOTE: Pin 23 is the thermal pad on
the bottom of the device.
NCP5214A
AWLYYWW
G
1
1
22


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