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PDF NCP51198 Data sheet ( Hoja de datos )
| Número de pieza | NCP51198 | |
| Descripción | 1.5A DDR Memory Termination Regulator | |
| Fabricantes | ON Semiconductor | |
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NCP51198
1.5A DDR Memory
Termination Regulator
The NCP51198 is a simple, cost−effective, high−speed linear
regulator designed to generate the VTT termination voltage rail for
DDR−I, DDR−II and DDR−III memory. The regulator is capable of
actively sourcing or sinking up to ±1.5 A for DDR−I, or up to ±0.5 A
for DDR−II /−III while regulating the output voltage to within
±30 mV.
The output termination voltage is tightly regulated to track VTT =
(VDDQ / 2) over the entire current range.
The NCP51198 incorporates a high−speed differential amplifier to
provide ultra−fast response to line and load transients. Other features
include extremely low initial offset voltage, excellent load regulation,
source/sink soft−start and on−chip thermal shut−down protection.
The NCP51198 features the power−saving Suspend To Ram (STR)
function which will tri−state the regulator output and lower the
quiescent current drawn when the /SS pin is pulled low.
The NCP51198 is available in a SOIC−8 Exposed Pad package.
Features
• Generate DDR Memory Termination Voltage (VTT)
• For DDR−I, DDR−II, DDR−III Source / Sink Currents
• Supports DDR−I to ±1.5 A, DDR−II to ±0.5 A (peak)
• Integrated Power MOSFETs with Thermal Protection
• Stable with 10 mF Ceramic VTT Capacitor
• High Accuracy Output Voltage at Full−Load
• Minimal External Component Count
• Shutdown for Standby or Suspend to RAM (STR) mode
• Built−in Soft Start
• These are Pb−Free Devices
Appications
• Desktop PC’s, Notebooks, and Workstations
• Graphics Card DDR Memory Termination
• Set Top Boxes, Digital TV’s, Printers
• Embedded Systems
• Active Bus Termination
http://onsemi.com
MARKING
DIAGRAM
8
1
SOIC8−NB EP
PD SUFFIX
CASE 751BU
51198
AYWWG
G
51198
A
Y
WW
G
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN CONNECTION
1
GND
8
/SS
VTTS
VREF
SOIC−8 EP
VTT
PVCC
VCC
VDDQ
ORDERING INFORMATION
Device
Package
Shipping†
NCP51198PDR2G SOIC−8* 2500 / Tape & Reel
†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.
*These packages are inherently Pb−Free.
© Semiconductor Components Industries, LLC, 2013
March, 2013 − Rev. 0
1
Publication Order Number:
NCP51198/D
Free Datasheet http://www.datasheet4u.com/
1 page  
140
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20
0
2
3.5
3.0
2.5
2.0
1.5
1.0
0.5
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3.0
2.5
2.0
1.5
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0.5
0
0
NCP51198
TYPICAL PERFORMANCE CHARACTERISTICS
3 45
VCC (V)
Figure 2. IqSD vs. VCC
3 45
VCC (V)
Figure 4. VIH and VIL
12 3 45
VDDQ (V)
Figure 6. VTT vs. VDDQ
700
600
500
400
300
200
100
0
62
34
VCC (V)
Figure 3. Iq vs. VCC
5
6
3.0
2.5
2.0
1.5
1.0
0.5
0
6 0123 45 6
VDDQ (V)
Figure 5. VREF vs. VDDQ
160
140
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100
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−40°C
25°C
20
85°C
125°C
0
62
3
45
6
VCC (V)
Figure 7. IqSD vs. VCC over Temperature
http://onsemi.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet NCP51198.PDF ] | |
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