PT7709 Datasheet, PDF (2/4 Pages) Texas Instruments – 20 Amp Programmable Next Generation Big Hammer

PT7709—5V
20 Amp Programmable
Next Generation “Big Hammer”
Features
• Single-Device: +5V input
• 5-bit Programmable:
1.3V to 3.5V@20A
• High Efficiency
• Differential Remote Sense
• Short-Circuit Protection
• Parallelable with PT7743
20A “Current Booster”
Programming Information
Ordering 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
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
VID4=0
Vout
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
PT7709J = 1.3 to 3.5 Volts
(For dimensions and PC board layout,
see Package Styles 800 and 810.)
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole N
Horizontal Through-Hole A
Horizontal Surface Mount 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.
TYPICAL CHARACTERISTICS
PT7709 Performance, Vo = 3.3 VDC (See Note A)
Efficiency vs Output Current
100
90
VOUT
80
3.3V
2.5V
70
1.8V
60
50
0
4
8
12
16
20
Iout (A)
Safe Operating Area Curves (See Note B)
V_IN =5.0V, Vo =3.3 VDC
90.0
80.0
70.0
Airflow
200LFM
60.0
120LFM
50.0
60LFM
Nat conv
40.0
30.0
20.0
0.0
5.0
10.0
15.0
20.0
Iout (A)
Ripple vs Output Current
50
40
30
20
10
0
0
4
8
12
16
Iout (A)
Power Dissipation vs Output Current
10
VOUT
3.3V
2.5V
1.8V
20
V_IN =5.0V, Vo =1.8 VDC
90.0
80.0
70.0
Airflow
200LFM
60.0
120LFM
50.0
60LFM
Nat conv
40.0
30.0
20.0
0.0
4.0
8.0
12.0
16.0
20.0
Iout (A)
8
VOUT
6
1.8V
2.5V
4
3.3V
2
0
0
4
8
12
16
20
Iout (A)
Note A: All data in the above graphs has been developed from actual products tested at 25°C. The data is considered typical for the ISR
Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends