PT6420 Datasheet, PDF (2/5 Pages) Texas Instruments – 3 AMP ADJUSTABLE INTEGRATED SWITCHING REGULATOR

CHARACTERISTIC DATA
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PT6420 Series
PT6428 1.2 VDC (See Note 1)
Efficiency vs Output Current
100
90
Vin
80
4.5V
70
5.0V
5.5V
60
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Iout-(Amps)
PT6427, 2.1 VDC (See Note 1)
Efficiency vs Output Current
100
90
Vin
80
4 .5 V
70
5 .0 V
5 .5 V
60
50
40
0 0.5 1 1.5 2 2.5 3
Iout-(Amps)
Ripple vs Output Current
100
80
60
V in
5 .5V
40
5 .0V
20
4 .5V
0
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Thermal Derating (T_a) (See Note 2)
3
85°C
2.5
2
1.5
1
0.5
0
4.5
4 .7 5
5
5 .2 5
5.5
Vin-(Volts)
Ripple vs Output Current
100
80
Vin
60
5.5V
5.0V
40
4.5V
20
0
0 0.5 1 1.5 2 2.5 3
Iout-(Amps)
Thermal Derating (T_a) (See Note 2)
3
85°C
2.5
2
1.5
1
0.5
0
4.5
4.75
5
5.25
5.5
Vin-(Volts)
Power Dissipation vs Output Current
3.0
2.5
Vin
2.0
5.5V
1.5
5.0V
4.5V
1.0
0.5
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Iout-(Amps)
Power Dissipation vs Output Current
2.5
2
Vin
5 .5 V
1.5
5 .0 V
1
4 .5 V
0.5
0
0 0.5 1 1.5 2 2.5 3
Iout-(Amps)
PT6425, 3.3 VDC (See Note 1)
Efficiency vs Output Current
100
90
80
Vin
4.5V
70
5.0V
5.5V
60
50
40
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Ripple vs Output Current
100
80
Vin
60
5.5V
5.0V
40
4.5V
20
0
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Thermal Derating (T_a) (See Note 2)
3
85°C
2.5
2
1.5
1
0.5
0
4.5
4.75
5
5.25
5.5
Vin-(Volts)
Power Dissipation vs Output Current
2
1.8
1.6
1.4
Vin
1.2
5.5V
1
5.0V
0.8
4.5V
0.6
0.4
0.2
0
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Note 1: All data listed in the above graphs except for derating data has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)
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