For assistance or to order, call
(800) 531-5782
PT6700
kage
ving Pac
ce-Sa
New Spa
Series
ADVANCED INFORMATION - AVAILABLE 1Q99
12.5 AMP PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR
Revised 1/12/99
The PT6700 is a new series of
high-performance, 12.5 Amp Inte-
grated Switching Regulators (ISRs)
housed in a unique, space-saving 23-
pin SIP package. The 12.5A capability
allows easy integration of the latest
high-speed, low-voltage µPs and bus
drivers into existing 5V systems.
The output voltage of the PT6700
can be programmed easily from 1.3V
to 3.5V with a 5-bit input compatible
with Intel’s Pentium
®
II Processor.
The PT6700 includes a differential
remote sense which automatically com-
pensates for any voltage drop from the
ISR to the load. Also provided are
internal short circuit protection,
OVP drive and a power good output
signal. When over-voltage is de-
tected, the PT6700 provides drive for
an external crowbar or other protec-
tion circuitry.
Patent pending on package assembly
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
REMOTE SENSE (+)
7 6 5 4 3
1
23
Pin-Out Information
OVP DRV
Pin Function
1
2
OVP Drive
Pwr Good
VID0
VID1
VID2
VID3
VID4
STBY*
Do not connect
Pin Function
13
14
15
16
17
18
19
20
21
22
23
Remote Sense Gnd
GND
GND
GND
GND
GND
V
out
V
out
V
out
V
out
Remote Sense V
out
V
IN
L1
10 - 12
1µH
R1
C
IN
PWR GOOD
GND
STBY*
+
PT6700
2
14 - 18
8
13
19 - 22
V
OUT
3
4
LOAD
C
OUT
+
5
6
7
8
9
10
11
12
GND
REMOTE SENSE (-)
Specifications
Cin = Required 1000µF electrolytic
Cout= Required 330µF electrolytic
L1 = Optional 1µH input choke
R1 = Required 10kΩ pull-up when using Pwr Good signal. Pwr good
output is high when the output voltage is within specification.
V
in
V
in
V
in
For STBY* pin
open = output enabled
ground = output disabled.
Characteristics
(T
a
= 25°C unless noted)
Output Current
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
with C
out
= 330µF
Efficiency
PT6700 SERIES
Symbols
I
o
V
in
∆V
o
Reg
line
Reg
load
V
n
t
tr
V
os
η
Conditions
T
a
= +60°C, 200 LFM, pkg N
T
a
= +25°C, natural convection
0.1A
≤
I
o
≤
12.5A
V
in
= +5V, I
o
= 12.5A
0°C
≤
T
a
≤
+65°C
4.5V
≤
V
in
≤
5.5V, I
o
= 12.5A
V
in
= +5V, 0.1
≤
I
o
≤
12.5A
V
in
= +5V, I
o
= 12.5A
I
o
step between 6A and 12A
V
o
over/undershoot
V
in
= +5V, I
o
= 8A
V
o
V
o
V
o
V
o
V
o
= 3.3V
= 2.9V
= 2.5V
= 1.8V
= 1.5V
Min
0.1
*
0.1
*
4.5
**
V
o
-0.03
—
—
—
—
—
—
—
—
—
—
300
0
0
-40
—
—
—
Typ
—
—
—
—
±10
±20
50
100
200
89
87
85
81
79
350
—
—
—
TBD
TBD
26
Max
12.5
12.5
5.5
V
o
+0.03
—
—
—
—
—
—
—
—
—
—
400
TBD
+65
+125
—
—
—
Units
A
A
V
V
mV
mV
mV
µSec
mV
%
%
%
%
%
kHz
°C
°C
°C
G’s
G’s
grams
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
ƒ
o
T
a
T
a
T
s
4.5V
≤
V
in
≤
5.5V
0.1A
≤
I
o
≤
12.5A
—
Forced Air Flow = 200 LFM
Over V
in and
I
o
Ranges
—
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
—
* ISR-will operate down to no load with reduced specifications.
** The minimum input voltage is 4.5V or V
out
+1.2V, whichever is greater.
Output Capacitors:
The PT6700 series requires a minimum ouput capacitance of 330µF for proper operation. Do not use Oscon type capacitors. The maximum allow-
able output capacitance is 15,000µF.
Input Filter:
An input filter is optional for most applications. The input inductor must be sized to handle 12.5ADC with a typical value of 1µH. The input capacitance must
be rated for a minimum of 1.1Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
For assistance or to order, call
(800) 531-5782
PT6700
Features
•
Space Saving SIP Package
•
+5V input
•
5-bit Programmable:
1.3V to 3.5V@12A
•
High Efficiency
•
Input Voltage Range:
4.5V to 5.5V
•
Differential Remote Sense
•
Short Circuit Protection
•
Over-Voltage Drive
•
Power Good Signal
Series
Programming Information
VID3 VID2 VID1 VID0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Ordering Information
PT6701t
= 1.3 to 3.5 Volts
t
(For dimensions and PC board layout,
see Package Styles 1300 and 1310.)
1.30V
1.35V
1.40V
1.45V
1.50V
1.55V
1.60V
1.65V
1.70V
1.75V
1.80V
1.85V
1.90V
1.95V
2.00V
2.05V
VID4=1 VID4=0
Vout
Vout
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.4V
3.5V
PT Series Suffix
(PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
Logic 0 = Pin 12 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 and VID4 may not be changed while the unit is operating.
C H A R A C T E R I S T I C
D A T A
(Typical performance at Ta = 25°C)
PT6701, V
o
= 3.3V
Efficiency vs Output Current
100
90
Efficiency - %
80
70
60
50
40
0
2
4
6
8
10
12
Iout-(Amps)
Ripple vs Output Current
60
50
40
30
20
10
0
0
2
4
6
8
10
12
Ripple-(mV)
Iout-(Amps)
Power Dissipation vs Output Current
7
6
5
PD-(Watts)
4
3
2
1
0
0
2
4
6
8
10
12
Iout-(Amps)
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http:/www.powertrends.com
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