PT6722 Datasheet, PDF (2/7 Pages) Texas Instruments – 14-A Low-Voltage Programmable Integrated Switching Regulator

PT6722—12V
14-A Low-Voltage Programmable
Integrated Switching Regulator
Programming Information
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
VID1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
VID4=1
Vout
0.000V
1.100V
1.125V
1.150V
1.175V
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
VID4=0
Vout
1.475V
1.500V
1.525V
1.550V
1.575V
1.600V
1.625V
1.650V
1.675V
1.700V
1.725V
1.750V
1.775V
1.800V
1.825V
1.850V
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.
PT6700 Product Family Comparison
PT6701
Input
Voltage
5V
Adjust
Method
5-Bit
Program
Range
1.3V– 3.5V
PT6702 3.3V
4-Bit
1.3V– 2.05V
PT6703 3.3V/5V 5-Bit
1.1V– 1.85V
# PT6705
5V
Resistor 1.5V–3.3V
# PT6715
5V
Resistor 1.5V–3.3V
PT6721
12V
5-Bit
1.3V– 3.5V
PT6722 12V
5-Bit
1.1V– 1.85V
# PT6725
12V
Resistor 1.5V–5.0V
OVP/ +12V Bias
Pwr Good Required
ü
ü
ü
ü
ü
ü
# –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 =330µF, and Io =Iomax)
Characteristic
Symbol
Conditions
PT6722
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
Efficiency
Vo Ripple (pk-pk)
Transient Response
Short Circuit Current
Switching Frequency
Standby Control (pin 8)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Output Capacitance
Operating Temperature Range
Storage Temperature
Reliability
Mechanical Shock
Mechanical Vibration
Weight
Flammability
I_o
Vin
Vo tol
Regtemp
Regline
Regload
∆Votot
η
Vr
t_tr
∆Vtr
I_sc
ƒo
VIH
VIL
IIL
I_in standby
Cout
T_a
Ts
MTBF
—
—
—
—
T_a =+60°C, 200LFM
Ta =+25°C, natural convection
Over Io Range
–40° >Ta > +85°C
Over Vin range
Over Io range
Includes set-point, line, load,
–40° >Ta > +85°C
Io =8A
20MHz bandwidth
0.1A/µs load step, 6A to 12A
Vo over/undershoot
Vo =1.8V
V_o =1.2V
Over Vin range
Referenced to GND (pin 14)
Pin 8 to GND
pins 8 & 14 connected
Over V_in range
—
Per Bellcore TR-332
50% stress, Ta =40°C, ground benign
Per Mil-Std-883D, method 2002.3,
1mS, half-sine, mounted to a fixture
Per Mil-Std-883D, method 2007.2,
20-2000Hz, soldered in a PC board
—
Materials meet UL 94V-0
0.1 (1)
0.1 ⁽¹⁾
10.8
—
—
—
—
—
—
—
—
—
—
—
300
4.0
–0.2
—
—
330 (4)
-40
-40
11.7
—
—
—
—
—
—
±10
±0.5
±2.5
±2.5
±25
83
78
20
50
±70
20
350
—
0.4
10
5
—
—
—
—
500
15 (6)
26
14
14
13.2
±20 ⁽²⁾
—
±5
±10
±36
—
—
—
—
—
30
400
Open (3)
1.0
–
10
15,000
+85 (5)
+125
—
—
—
—
A
VDC
mV
%Vo
mV
mV
mV
%
mVpp
µs
mV
A
kHz
V
µA
mA
µF
°C
°C
106 Hrs
G’s
Gs’
grams
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 330µF, and a minimum input capacitance of 1,000µF 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 15,000µF. 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 1µH.
For technical support and more information, see inside back cover or visit www.ti.com