TCL1584 Datasheet, PDF (10/13 Pages) TelCom Semiconductor, Inc – 7A / 5A / 4.6A / 3A, FAST RESPONSE, LOW DROPOUT POSITIVE LINEAR VOLTAGE REGULATORS

PRELIMINARY INFORMATION
TCL1584
TCL1585
TCL1587
TYPICAL APPLICATIONS (Cont.)
7A / 5A / 4.6A / 3A, FAST RESPONSE,
LOW DROPOUT POSITIVE LINEAR
VOLTAGE REGULATORS
Typical Intel™* Pentium™* Pro GTL+ Bus Terminator Application Using TCL1587-1.5
V_IN = 5V or 3.3V
C1 = 10µF
V_IN = 5V or 3.3V
C1 = 10µF
V_IN
V_OUT
TCL1587-1.5
GND
V_OUT = 1.5V @ 3A
C2 = 10µF
(Tantalum)
R_TERM
C3 =1µF x 5 _{= 100Ω x 71}
(Ceramic) _Lines
R_REF
V_IN
V_OUT
TCL1587-1.5
GND
GTL+ Bus (Z_O)
V_REF = 1.0V
V_OUT = 1.5V @ 3A
R_TERM
= 100Ω x 71
Lines
C2 = 10µF
(Tantalum)
C3 = 1µF x 5
(Ceramic)
2R_REF
NOTES: 1. It is recommended that the GTL+ bus be terminated at each end by a separate regulator to avoid power distribution losses.
2. The GTL+ bus transmission line symbol will consist of all the components (chip set IC's) on the GTL+ bus.
3. R_REF and 2R_REF should be chosen such that V_REF loading does not appreciably degrade V_REF regulation.
Values <100 ohms should suffice for most applications.
4. R_TERM will be determined by individual bus physical/electrical parameters. See CPU manufacturer documentation for
application information.
*All Trademarks and Trade Names are the property of their respective owners.
TCL1584/1585/1587-04 6/6/97
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