DataSheetWiki


FAN6550 fiches techniques PDF

Fairchild Semiconductor - 2A DDR Bus Termination Regulator

Numéro de référence FAN6550
Description 2A DDR Bus Termination Regulator
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





1 Page

No Preview Available !





FAN6550 fiche technique
FAN6550
2A DDR Bus Termination Regulator
www.fairchildsemi.com
Features
• Can source and sink up to 2A continous, 3A peak
• No heatsink required
• Integrated Power MOSFETs
• Generates termination voltages for DDR SDRAM
• VREF input available for external voltage divider
• Separate voltages for VCCQ and PVDD
• Buffered VREF output
• VOUT of ±3% or less at 2A
• Minimum external components
• 0°C to 70°C operating range
• Shutdown for standby or suspend mode operation
• Thermal Shutdown 130ºC
Block Diagram
Description
The FAN6550 switching regulator is designed to convert
voltage supplies ranging from 2.3V to 4V into a desired out-
put voltage or termination voltage for DDR SDRAM mem-
ory. The FAN6550 can be implemented to produce regulated
output voltages in two different modes. In the default mode,
when the VREF pin is open, the FAN6550 output voltage is
50% of the voltage applied to VCCQ. The FAN6550 can also
be used to produce various user-defined voltages by forcing a
voltage on the VREFIN pin. In this case, the output voltage
follows the input VREFIN voltage. The switching regulator
is capable of sourcing or sinking up to 2A of current while
regulating an output VTT voltage to within 3% or less.
Transient output currents of ±3A can also be accommodated.
The FAN6550 can also be used in conjunction with series
termination resisitors to provide an excellent voltage source
for active termination schemes of high speed transmission
lines as those seen in high speed memory buses and distrib-
uted backplane designs.
15 16
14
VCCQ AVCC VREFOUT
200k
VREFIN
11
200k
AGND
13
+
VREF BUFFER
OSCILLATOR/
RAMP
GENERATOR
ERROR AMP
+
VFB
10
1
VDD
9
VDD
12
SHDN
27
PVDD1 PVDD2
VL1
(VOUT)
3
SQ
R
+
RAMP
COMPARATOR
Q
6
VL2
(VOUT)
DGND
8
PGND1 PGND2
45
REV. 1.0.2 3/11/02

PagesPages 12
Télécharger [ FAN6550 ]


Fiche technique recommandé

No Description détaillée Fabricant
FAN6550 2A DDR Bus Termination Regulator Fairchild Semiconductor
Fairchild Semiconductor
FAN6555 2A DDR Bus Termination Regulator Fairchild Semiconductor
Fairchild Semiconductor

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche