PT7772-3.3V Datasheet, PDF (2/4 Pages) Texas Instruments – Sledge Hammer

PT7772—3.3V
32 Amp “Sledge Hammer”
Programmable ISR
Features
• +3.3V input
• 4-bit Programmable:
1.3V to 2.05V@32A
• High Efficiency
• Differential Remote Sense
• Parallelable with PT7746
32A “Current Booster”
• 27-pin SIP Package
Programming Information
VID3 VID2 VID1 VID0 Vout
1
1
1
1
1.30V
1
1
1
0
1.35V
1
1
0
1
1.40V
1
1
0
0
1.45V
1
0
1
1
1.50V
1
0
1
0
1.55V
1
0
0
1
1.60V
1
0
0
0
1.65V
0
1
1
1
1.70V
0
1
1
0
1.75V
0
1
0
1
1.80V
0
1
0
0
1.85V
0
0
1
1
1.90V
0
0
1
0
1.95V
0
0
0
1
2.00V
0
0
0
0
2.05V
Logic 0 = Pin 12 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 may not be changed while the unit is operating.
Ordering Information
PT7772❏ = 1.3 to 2.05 Volts
For dimensions and PC board layout, see
Package Style 1020 and 1030
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
N
Horizontal Through-Hole
A
Horizontal Surface Mount
C
TYPICAL CHARACTERISTICS
Characteristic
Data,
V
IN
=3.3V
(See Note A)
Efficiency vs Output Current
90
80
70
VOUT
1.8V
60
1.5V
50
40
0
5
10
15
20
25
30
Output Current (A)
Output Ripple vs Output Current
40
Safe Operating Area, V_IN =3.3V (See Note B)
Package Style N, Vout=+1.8V
90
80
70
Airflow
60
Nat. Conv
60 LFM
120 LFM
50
200 LFM
40
30
20
0
4
8
12
16
20
24
28
32
Output Current (A)
30
V_OUT
20
1.5V
1.8V
10
0
0
5
10
15
20
25
30
Output Current (A)
Power Dissipation vs Output Current
20
15
VOUT
10
1.5V
1.8V
5
0
0
5
10
15
20
25
30
Output Current (A)
Note A: All data listed in the above graphs has been developed from actual products tested at 25°C. This 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