lx5261 Microsemi Corporation, lx5261 Datasheet

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lx5261

Manufacturer Part Number
lx5261
Description
27-line Lvd Scsi Source/sink Regulator
Manufacturer
Microsemi Corporation
Datasheet
Copyright © 2000
Rev. 1.0c, 2005-02-08
regulator designed to provide the
correct reference voltages and bias
currents for SCSI LVD applications.
With the proper LVD termination
network (475Ω, 121Ω, 475Ω), the
LX5261 assures that LVD performance
is compliant to the SPI-2 (Ultra2), SPI-
3 (Ultra160) and SPI-4 (Ultra320)
specification.
regulated outputs (1.75V and 0.75V)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
The LX5261 is a source/sink
The LX5261 provides two fixed
TM
4.7uF
2.7V to 5.25V
VTERM
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
GND
2
4
D E S C R I P T I O N
Reference
Reference
Reference
1.75V
0.75V
1.3V
Append the letters “TR” to the part number. (i.e. LX5261CDP-TR)
200mA, along with a buffered 1.3V
output for DIFSENS signaling.
trimming of the internal voltage enabling
precise output voltages; typically +/- 1%
of its specified value. Thermal Shutdown
and Current Limiting is integrated on-
chip.
pin SOIC (DP) package.
0 to 70
T
A
each capable of sourcing / sinking
The
The LX5261 is available in the 16-
T Y P I C A L A P P L I C A T I O N
(°C)
Integrated Products Division
PACKAGE ORDER INFO
®
+
+
+
LX5261
-
-
-
Note: Available in Tape & Reel.
Microsemi
200mA source/sink
1.3V +/- 0.1V
200mA source/sink
1.75V +/- 0.05V
0.75V +/- 0.05V
DP
27-Line LVD SCSI Source/Sink Regulator
RoHS Compliant / Pb-free
features
SOIC
16-Pin
Transition DC: 0440
LX5261CDP
on-chip
7
6
3
P
VOUT1
VOUT2
DIFSENS
RODUCTION
4.7uF
4.7uF
Compliant with SPI-2 (Ultra2),
2.7V to 5.25V Operation
200mA Source/Sink Capability
DIFSENS Line Driver
Current Limit and Thermal
Pin Compatible With Unitrode
SPI-3 (Ultra160), and SPI-4
(Ultra320)
Protection
UCC561
D
475
1%
ATA
475
1%
475
1%
475
1%
K E Y F E A T U R E S
S
121
1%
HEET
121
1%
Pairs
LVD
L1+
L1-
27
L27+
L27-
LX5261
Page 1

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lx5261 Summary of contents

Page 1

... SOIC DP 16-Pin T (°C) A RoHS Compliant / Pb-free Transition DC: 0440 LX5261CDP Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5261CDP-TR) Microsemi Integrated Products Division LX5261 RODUCTION ATA HEET Compliant with SPI-2 (Ultra2), ...

Page 2

... Regulator ground pin. Connect to ground. Attached to die mounting pad, but not bonded to GND pin. Pins should be considered a heat sink only, and not a true ground connection recommended that these pins be connected to ground, but can be left floating. Microsemi Integrated Products Division LX5261 RODUCTION ATA ...

Page 3

... V = 1.25V SNK2 OUT Microsemi Integrated Products Division LX5261 RODUCTION ATA HEET LX5261 Units Min Typ Max 2.7 5. ≤ ≤ T 70°C, and V A TERM LX5261 Min Typ Max 35 40 2.7 5.25 < 5.25V 1.7 1.75 1.8 IN 1.2 1.3 1.4 < 5.25V 0.7 0.75 0.8 IN -200 200 -700 700 -5 -15 50 200 -200 200 ...

Page 4

... GND 4 LVD SCSI with Resistor Stack The LX5261 is used with a LVD resistor network (475Ω, 121Ω, 475Ω) to meet LVD SCSI performance. Connecting the top side of the LVD resistor network to the 1.75V regulated output (V output (V , pin 3) provides the correct bias voltage, differential impedance, common mode differential impedance, and common mode REG2 voltage required by the SPI-2 through SPI-4 SCSI specification (see Figure 2 ...

Page 5

... NCHES Dim MIN MAX MIN A 9.78 10.01 0.385 B 3.81 4.01 0.150 C 1.35 1.75 0.053 D 0.35 0.46 0.014 F 0.77 G 1.27 BSC 0.050 BSC J 0.19 0.25 0.007 K 0.10 0.25 0.004 L 4.82 5.21 0.189 5.79 6.20 0.228 *LC 0.10 Microsemi Integrated Products Division LX5261 D S RODUCTION ATA HEET MAX 0.394 0.158 0.069 0.018 0.030 0.010 0.010 0.205 8 0.244 0.004 Page 5 ...

Page 6

... Copyright © 2000 Rev. 1.0c, 2005-02-08 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 27-Line LVD SCSI Source/Sink Regulator ® P RODUCTION Microsemi Integrated Products Division LX5261 D S ATA HEET Page 6 ...

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