TI PT6721

For assistance or to order, call
(800) 531-5782
PT6700
Series
Revised 9/13/99
13 AMP PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR
ackage
Saving P
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a
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New
The PT6700 is a new series of
high-performance, 13 Amp Integrated
Switching Regulators (ISRs) housed in
a unique, space-saving 23-pin SIP
package. The 13A capability allows
easy integration of the latest highspeed, 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
Patent pending on package assembly
Pin-Out Information
Standard Application
OVP DRV
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
VIN
REMOTE SENSE (+)
7 6 5 4 3
L1
10 - 12
1µH
R1
CIN
+
1
23
PT6700
2
14 - 18
8
VOUT
19 - 22
13
COUT
+
LOAD
PWR GOOD
GND
GND
STBY*
Specifications
with Intel’s Pentium II Processor.
The PT6700 includes a differential
remote sense which automatically compensates 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 detected, the PT6700 provides drive for
an external crowbar or other protection circuitry.
REMOTE SENSE (-)
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.
Pin Function
Pin Function
1
2
OVP Drive
Pwr Good
13
14
GND
3
4
VID0
VID1
15
16
GND
GND
5
6
VID2
VID3
17
18
GND
GND
7
8
VID4
STBY*
19
20
Vout
Vout
9
10
Do not connect
Vin
21
22
Vout
Vout
11
12
Vin
Vin
23
Remote Sense Vout
Remote Sense Gnd
For STBY* pin
open = output enabled
ground = output disabled.
PT6700 SERIES
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = +60°C, 200 LFM, pkg N
Ta = +25°C, natural convection
0.1 *
0.1 *
—
—
13
13
A
A
Input Voltage Range
Vin
0.1A ≤ Io ≤ 13A
4.5
—
5.5
V
Output Voltage Tolerance
∆Vo
Vin = +5V, Io = 13A
-40°C ≤ Ta ≤ +65°C
Vo-0.03
—
Vo+0.03
V
Line Regulation
Regline
4.5V ≤ Vin ≤ 5.5V, Io = 13A
—
±10
—
mV
Load Regulation
Regload
Vin = +5V, 0.1 ≤ Io ≤ 13A
—
±20
—
mV
Vo Ripple/Noise
Vn
Vin = +5V, I o = 13A
—
50
—
mV
Transient Response
with Cout = 330µF
ttr
Vos
Io step between 6A and 12A
Vo over/undershoot
—
—
70
100
—
—
µSec
mV
Efficiency
η
Vin = +5V, Io = 8A
—
—
—
—
—
91
90
89
85
83
—
—
—
—
—
%
%
%
%
%
Switching Frequency
ƒo
4.5V ≤ V in ≤ 5.5V
0.1A ≤ Io ≤ 12.5A
300
350
400
kHz
Absolute Maximum
Operating Temperature Range
Ta
—
-40
—
+85
°C
Recommended Operating
Temperature Range
Ta
Forced Air Flow = 200 LFM
Over Vin and Io Ranges
-40
—
+65
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
TBD
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
TBD
—
G’s
—
—
26
—
grams
Weight
—
Vo
Vo
Vo
Vo
Vo
= 3.3V
= 2.9V
= 2.5V
= 1.8V
= 1.5V
* ISR-will operate down to no load with reduced specifications.
Output Capacitors: The PT6700 series requires a minimum ouput capacitance of 330µF. The maximum allowable 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 1.6Arms 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
Series
Features
Programming Information
• Space Saving SIP Package
• +5V input
• 5-bit Programmable:
1.3V to [email protected]
• High Efficiency
• Input Voltage Range:
4.5V to 5.5V
• Differential Remote Sense
• Short Circuit Protection
• Over-Voltage Drive
• Power Good Signal
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
VID4=1 VID4=0
Vout
Vout
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
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
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
Logic 0 = Pin 13 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 and VID4 may not be changed while the unit is operating.
Ordering Information
PT6700 Product Family
PT6701❏
❏ = 1.3 to 3.5 Volts
(For dimensions and PC board layout,
see Package Styles 1300 and 1310.)
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
Input
Voltage
Vout
Adjust
OVP/
Pwr Good
PT6701
5V
VID
✓
PT6702
3.3V
VID
✓
PT6705
5V
Resistor
PT6715
5V
Resistor
PT6721
12V
VID
PT6725
12V
Resistor
C H A R A C T E R I S T I C
PT6701, Vin = 5.0V
✓
D A T A
Efficiency vs Output Current
90
100
80
90
70
Airflow
200LFM
60
120LFM
60LFM
50
Nat conv
Efficiency (%)
Ambient temperature (°C)
✓
PT6701, Vin = 5.0V (Typical performance at Ta = 25°C)
Safe Operating Area, Vout = 3.3V
40
80
Vout
3.3V
2.5V
70
1.8V
60
50
30
20
40
0
2
4
6
8
10
0
12
2
4
6
8
10
12
Iout (A)
Iout-(A)
Ripple vs Output Current
Power Dissipation vs Output Current
6
30
5
25
4
Vout
3.3V
3
2.5V
1.8V
2
1
Ripple (mV)
Pd (Watts)
Requires
+12V Bias
20
Vout
3.3V
2.5V
15
1.8V
10
5
0
0
0
2
4
6
Iout (A)
8
10
12
0
2
4
6
8
10
12
Iout (A)
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http:/www.powertrends.com
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Copyright  1999, Texas Instruments Incorporated