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PT6722—12V
14-A Low-Voltage Programmable
Integrated Switching Regulator
Logic 0 = Pin 13 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID4 may not be changed while the unit is operating.
Programming Information
VID4=1
VID4=0
VID3
VID2
VID1
VID0
Vout
1
1110.000V
1.475V
1
1101.100V
1.500V
1
0
1
1.125V
1.525V
1
0
1.150V
1.550V
1
0
1
1.175V
1.575V
1
0
1
0
1.200V
1.600V
1
0
1
1.225V
1.625V
1
0
1.250V
1.650V
0
1
1.275V
1.675V
0
1
0
1.300V
1.700V
0
1
0
1
1.325V
1.725V
0
1
0
1.350V
1.750V
0
1
1.375V
1.775V
0
1
0
1.400V
1.800V
0
1
1.425V
1.825V
0
1.450V
1.850V
PT6700 Product Family Comparison
Input
Adjust
Program
OVP/
+12V Bias
Voltage
Method
Range
Pwr Good Required
PT6701
5V
5-Bit
1.3V– 3.5V
ü
PT6702
3.3V
4-Bit
1.3V– 2.05V
ü
PT6703
3.3V/5V
5-Bit
1.1V– 1.85V
ü
# PT6705
5V
Resistor
1.5V–3.3V
ü
# PT6715
5V
Resistor
1.5V–3.3V
PT6721
12V
5-Bit
1.3V– 3.5V
ü
PT6722
12V
5-Bit
1.1V– 1.85V
ü
# PT6725
12V
Resistor
1.5V–5.0V
# –Indicates a series of products that have a nominal output voltage
set-point and may be adjusted with an external resistor.
Specifications (Unless otherwise stated, Ta =25°C, Vin =12V, Cout =330F, and Io =Iomax)
PT6722
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta =+60°C, 200LFM
0.1 (1)
—14
A
Ta =+25°C, natural convection
0.1 (1)
—14
Input Voltage Range
Vin
OverIoRange
10.8
—
13.2
VDC
Set Point Voltage Tolerance
Vo tol
—
±10
±20 (2)
mV
Temperature Variation
Regtemp
–40° >Ta > +85°C
—
±0.5
—
%Vo
Line Regulation
Regline
Over Vin range
—
±2.5
±5
mV
Load Regulation
Regload
Over Io range
—
±2.5
±10
mV
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—
±25
±36
mV
–40° >Ta > +85°C
Efficiency
η
Io =8A
Vo =1.8V
—
83
—
%
Vo =1.2V
—
78
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
20
—
mVpp
TransientResponse
ttr
0.1A/s load step, 6A to 12A
—
50
—
s
Vtr
Vo over/undershoot
—
±70
—
mV
Short Circuit Current
Isc
—
2030A
Switching Frequency
o
Over Vin range
300
350
400
kHz
Standby Control (pin 8)
Input High Voltage
VIH
Referenced to GND (pin 14)
4.0
—
Open (3)
V
Input Low Voltage
VIL
–0.2
0.4
1.0
Input Low Current
IIL
Pin 8 to GND
—
10
–
A
Standby Input Current
Iin standby
pins 8 & 14 connected
—
5
10
mA
External Output Capacitance
Cout
330 (4)
—
15,000
F
Operating Temperature Range
Ta
Over Vin range
-40
—
+85 (5)
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Reliability
MTBF
Per Bellcore TR-332
11.7
—
106 Hrs
50% stress, Ta =40°C, ground benign
Mechanical Shock
—
Per Mil-Std-883D, method 2002.3,
—
500
—
G’s
1mS, half-sine, mounted to a fixture
Mechanical Vibration
—
Per Mil-Std-883D, method 2007.2,
—
15 (6)
—G’s
20-2000Hz, soldered in a PC board
Weight
—
26
—
grams
Flammability
—
Materials meet UL 94V-0
Notes:
(1) ISR-will operate down to no load with reduced specifications.
(2) If the remote sense ground is not used, pin 13 must be connected to pin 14 for optimal output voltage accuracy.
(3) The Standby control (pin 8) has an internal pull-up, and if left open-circuit the module will operate when input power is applied. A small low-leakage (<100nA)
MOSFET must be used to control this input. The open-circuit voltage is less than 10V. See application notes for further information.
(4) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon capacitors.
(5) See Safe Operating Area curves.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
External Capacitors: The PT6722 requires a minimum ouput capacitance of 330F, and a minimum input capacitance of 1,000F for proper operation. The input
capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic load applications, additional input and output capacitance may be
required.The maximum allowable output capacitance is 15,000F. For more information refer to the application note regarding capacitor selection for this product.
Input Inductor: An input filter inductor is optional for most applications. The inductor must be sized to handle 3ADC with a typical value of 1H.