7A / 5A / 4.6A / 3A, FAST RESPONSE,
LOW DROPOUT POSITIVE LINEAR
VOLTAGE REGULATORS
PRELIMINARY INFORMATION
TCL1584
TCL1584
TCL1585
TCL1585
TCL1587
TCL1587
7A / 5A / 4.6A / 3A, FAST RESPONSE, LOW DROPOUT
POSITIVE LINEAR VOLTAGE REGULATORS
FEATURES
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Fixed and Adjustable Voltages ........ 1.5V and 3.3V
Optimized for Low Voltage Applications
Output Current Capability .......... 7A / 5A / 4.6A / 3A
Guaranteed Dropout Voltage up to Full Rated
Output
Integrated Thermal and Short-Circuit Protection
Compact 3-Pin Surface-Mount and Thru-Hole
Standard Power Packages
V
REF
Accuracy ................................................. 2.0%
Load Regulation ............................................. 0.05%
The TCL1584/1585/1587 are low dropout, positive lin-
ear voltage regulators. They have a maximum current
output specification of 7A, 5A, 4.6A and 3A respectively.
All three devices are supplied in fixed and adjustable output
voltage versions.
Good transient load response combined with low drop-
out voltage makes these devices ideal for the latest low
voltage microprocessor power supplies. Additionally, short-
circuit, thermal and safe operating area (SOA) protection is
provided internally to ensure reliable operation.
The TCL1587, TCL1585 and TCL1584 are available in
a 3-pin TO-220 tabbed power package and in a 3-pin surface
mount DDPAK-3 package.
APPLICATIONS
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Pentium
TM*
, PentiumPro
TM*
CPU Power Supplies
PowerPC
TM*
CPU Power Supplies
PentiumPro
TM*
System GTL+ Bus Terminators
Low-Voltage, High Speed Microprocessors
Post-Regulator for Switch-Mode Power Supplies
ORDERING INFORMATION
Part Number
TCL1584-3.3CAB
TCL1584-3.3CEB
TCL1584-ADJCAB
TCL1584-ADJCEB
TCL1585-1.5CAB
TCL1585-1.5CEB
TCL1585-3.3CAB
TCL1585-3.3CEB
TCL1585-ADJCAB
TCL1585-ADJCEB
Package
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
TO-220-3
DDPAK-3
Temp. Range
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
0擄C to + 70擄C
GENERAL DESCRIPTION
PIN CONFIGURATIONS
TO-220-3
DDPAK-3
1
2
3
1
2
3
TCL1584CAB
TCL1585CAB
TCL1587CAB
ADJ/GND
ADJ/GND
V
OUT
V
OUT
V
IN
V
IN
TCL1584CEB
TCL1585CEB
TCL1587CEB
NOTE:
For TO-220
螛
JA
= 53擄C/W. For DDPAK-3
螛
JA
= 76擄C/W.
螛
JA
for both packages
are specified
without external heat sinks.
See Applications Section for details.
TCL1587-1.5CAB
TCL1587-1.5CEB
TCL1587-3.3CAB
TCL1587-3.3CEB
TCL1587-ADJCAB
TCL1587-ADJCEB
TYPICAL OPERATING CIRCUIT
Fixed Output Voltage Version
V
IN
= 5V
C1 = 10碌F
V
IN
V
OUT
TCL158x-3.3
GND
V
OUT
= 3.3V
C2*
(Tantalum)
V
IN
= 5V
C1 = 10碌F
Adjustable Output Voltage Version
V
IN
TCL158x
ADJ
V
OUT
R1
V
OUT
=
(1+ R1/R2)V
REF
C2*
(Tantalum)
R2
*NOTE:
C2 is required to ensure output stability. Minimum 22碌F (TCL1584) or 10碌F (TCL1585/7),
low ESR tantalum type. Larger values may be required for high output current transient
regulation. See
Applications
section.
TCL1584/1585/1587-04 6/6/97
TCL1584/1585/1587-04 6/6/97
*All Trademarks and Trade Names are the property of their respective owners.
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TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
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