The PT6500 series is Power Trends鈥?/div>
new high performance +3.1 to 6V
input, 8 Amp, 14-Pin SIP (Single In-
line-Package) Integrated Switching
Regulator (ISR). This high-perfor-
mance ISR allows easy integration of
high-speed, low-voltage Pentium pro-
cessors and their support logic into
existing 3.3V or 5V systems without
redesigning the central power supply.
The high-performance PT6502 solves
the problem of providing the low ter-
minating voltages required by BTL/
Futurebus+, CTT, HP, and GTL Buses
from existing 3.3V or 5V power rails
without redesigning the central power
supply.
Pin-Out Information
Pin
Function
Remote Sense
Do not connect
STBY*-Standby
Ordering Information
PT6501簍
= 3.3 Volts
鈥?/div>
PT6502簍
= 1.5 Volts
PT Series Suffix
(PT1234X)
Case/Pin
Configuration
Heat Tab Configuration
None
Side
Standard Application
14
V
IN
(+)
4,5,6
11,12,13
Remote Sense
V
O
Adjust
V
OUT
(+)
PT6501,2,3
C1
Q1
INH
3
1
C2
7,8,9,10
COM
COM
C
1
= Required 330碌F electrolytic
C
2
= Required 330碌F electrolytic
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
in
V
in
V
in
GND
GND
GND
GND
V
out
V
out
V
out
V
out
Adjust
PT6503簍
PT6504簍
鈥?/div>
PT6505簍
鈥?/div>
PT6506簍
鈥?/div>
PT6507簍
鈥?/div>
PT6508簍
= 2.5 Volts
= 3.6 Volts
= 1.2 Volts
= 1.8 Volts
= 1.3 Volts
= 1.7 Volts
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
R
G
B
鈥?.3V Input Bus Capable
Pkg Style 400
Specifications
Characteristics
(T
a
=25擄C unless noted)
Output Current
Current Limit
Short Circuit Current
Input Voltage Range
PT6500 SERIES
Symbols
I
o
I
cl
I
sc
V
in
鈭哣
o
V
o
Conditions
Over V
in
range
V
in
=+5V
V
in
=+5V
0.1鈮?I
o
鈮?/div>
8.0A
V
in
= +5V, I
o
= 8.0A
T
a
= 0 to +70擄C
V
nom
= 3.3V
V
nom
= 1.5V
V
nom
= 2.5V
Pin 14 to V
o
or GND
V
adj
= (PT6501)
V
adj
= (PT6502)
V
adj
= (PT6503)
V
adj
= (PT6504)
V
o
=2.5V and 3.3V
V
o
=1.5V, 1.2V, 1.3V
V
o
=3.6V
Min
0.1*
鈥?/div>
鈥?/div>
4.5
3.1
4.8
V
o
-0.1
2.25
1.27
1.80
2.50
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
(PT6501/6504)
(PT6502)
(PT6503)
(PT6501/6504)
(PT6502)
(PT6503)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
13.0
15.0
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鹵7
鹵3
鹵7
鹵17
鹵12
鹵13
50
100
150
90
76
85
83
68
76
Max
8.0
20.0
鈥?/div>
6
6
6
V
o
+0.1
4.20
2.65
3.50
4.30
鹵17
鹵8
鹵13
鹵33
鹵23
鹵25
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Units
A
A
Apk
V
V
V
V
V
in
min=3.1V
or V
o
+1.2V
(whichever
is greater)
mV
Output Voltage Tolerance
Output Adjust Range
Line Regulation
Reg
line
Reg
load
V
n
t
tr
V
os
畏
4.5V
鈮?/div>
V
in
鈮?/div>
6.0V, I
o
= 8.0A (PT6501/4)
(PT6502)
3.1V
鈮?/div>
V
in
鈮?/div>
6.0V, I
o
= 8.0A
4.5V
鈮?/div>
V
in
鈮?/div>
6.0V, I
o
= 8.0A
(PT6503)
0.1
鈮?/div>
I
o
鈮?/div>
8.0A, V
in
= +5V
V
in
= +5V, I
o
= 8.0 Amp
I
o
step from 4A to 8.0A
V
o
over/undershoot
V
in
= +5V, I
o
= 3.0A
V
in
= +5V, I
o
= 8.0A
(PT6501/4)
(PT6502)
(PT6503)
Load Regulation
mV
mVpp
碌sec
mV
%
%
%
%
%
%
V
o
Ripple/Noise
Transient Response
with C
o
= 330碌F
Efficiency
* ISR will operate down to no load with reduced specifications.
Note:
The PT6500 Series requires a 330碌F electrolytic or tantalum input and output capacitor for proper operation in all applications.
See PT6000/7000 Series Capacitor application note.
2
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
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