PT6700 Datasheet, PDF (1/3 Pages) Texas Instruments – 13 AMP PROGRAMMABLE INTEGRATED SWITCHING REGULATOR

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PT6700 Series
13 AMP PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR
Revised 9/13/99
New ^{Space-Saving Package}
Patent pending on package assembly
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 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.
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
V_IN
L1
1µH
OVP DRV
76543
1 23
10 - 12 _PT6700
REMOTE SENSE (+)
19 - 22
V_OUT
R1
PWR GOOD
GND
STBY*
Specifications
+
C_IN
2 14 - 18 8 13
+
C_OUT
LOAD
GND
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-Out Information
Pin Function
1 OVP Drive
2 Pwr Good
3 VID0
4 VID1
5 VID2
6 VID3
7 VID4
8 STBY*
9 Do not connect
10 V_in
11 Vin
12 V_in
Pin Function
13 Remote Sense Gnd
14 GND
15 GND
16 GND
17 GND
18 GND
19 Vout
20 V_out
21 Vout
22 V_out
23 Remote Sense Vout
For STBY* pin
open = output enabled
ground = output disabled.
Characteristics
(T_a = 25°C unless noted)
Symbols
Conditions
PT6700 SERIES
Min
Typ
Max
Units
Output Current
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
V_o Ripple/Noise
Transient Response
with C_out = 330µF
Efficiency
I_o
V_in
∆Vo
Regline
Regload
V_n
ttr
V_os
η
Switching Frequency
ƒo
Absolute Maximum
Ta
Operating Temperature Range
T_a = +60°C, 200 LFM, pkg N
Ta = +25°C, natural convection
0.1A ≤ I_o ≤ 13A
Vin = +5V, Io = 13A
-40°C ≤ T_a ≤ +65°C
4.5V ≤ Vin ≤ 5.5V, Io = 13A
Vin = +5V, 0.1 ≤ Io ≤ 13A
V_in = +5V, I_o = 13A
Io step between 6A and 12A
V_o over/undershoot
Vin = +5V, Io = 8A
4.5V ≤ Vin ≤ 5.5V
0.1A ≤ I_o ≤ 12.5A
—
Vo = 3.3V
V_o = 2.9V
Vo = 2.5V
Vo = 1.8V
V_o = 1.5V
0.1^*
—
0.1^*
—
4.5
—
Vo-0.03 —
—
±10
—
±20
—
50
—
70
—
100
—
91
—
90
—
89
—
85
—
83
300
350
-40
—
13
13
5.5
Vo+0.03
—
—
—
—
—
—
—
—
—
—
400
+85
A
A
V
V
mV
mV
mV
µSec
mV
%
%
%
%
%
kHz
°C
Recommended Operating
Ta
Temperature Range
Storage Temperature
Ts
Mechanical Shock
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
-40
—
-40
—
+65
°C
+125
°C
—
TBD
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
TBD
—
G’s
Weight
—
—
—
26
—
grams
* 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 [phone] Fax: [phone] http://www.powertrends.com