PT7772 Datasheet, PDF (2/3 Pages) Texas Instruments – 32 AMP HIGH-PERFORMANCE “SLEDGE HAMMER” PROGRAMMABLE ISR

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PT7772 Series
Features
• +3.3V input
• 5-bit Programmable:
1.3V to 2.05V@32A
• High Efficiency
• Input Voltage Range:
3.1V to 3.6V
• Differential Remote
Sense
• 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
Ordering Information
PT7772t = 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
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.
CHARACTERISTIC DATA
Efficiency vs Output Current (@Vout=+1.8V)
100
90
Vin
4.5V
80
5.0V
5.5V
70
60
0 4 8 12 16 20 24 28 32
Output Current (A)
Power Dissipation vs Output Current (@Vout=+1.8V)
20
18
16
14
12
10
8
6
4
2
0
0 4 8 12 16 20 24 28 32
Vin
4.5V
5.0V
5.5V
Output Current (A)
Safe Operating Area (@Vin=+3.3V, Vout=+1.8V, Pkg N)
90
80
70 _{Recommended Maximum}
Operating Temperature
60
50
Airflow
Nat. Conv
60 LFM
120 LFM
200 LFM
40
30
20
0
4
8
12
16
20
24
28
32
Output Current (A)
Note: SOA curves represent operating conditions at
which internal components are at or below manufacturer’s
maximum rated operating temperatures.
Output Ripple vs Output Current (@Vout=+1.8V)
40
35
30
Vin
25
4.5V
20
5.0V
15
5.5V
10
5
0
0 4 8 12 16 20 24 28 32
Output Current (A)
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com
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