PT6644 Datasheet, PDF (2/6 Pages) Texas Instruments – 24W 12V Input Positive to Negative Voltage Converter

PT6640 Series
24W 12V Input Positive to Negative
Voltage Converter
Specifications (continued)
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
PT6640 SERIES
Min
Typ
Max
Switching Frequency
ƒ_o
Absolute Maximum
T_a
Operating Temperature Range
Storage Temperature
T_s
Mechanical Shock
—
Mechanical Vibration
—
Weight
—
+9V ≤ V_in ≤ V_inmax
Over Io range
Over V_in range
—
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
500
550
600
-40
—
+85 ⁽²⁾
-40
—
+125
—
500
—
—
7.5
—
—
14
—
Notes: (1) The PT6640 Series requires a 330µF(output) and 560µF(input) electrolytic capacitors for proper operation in all applications.
(2) See Safe Operating Area curves or call the factory for guidance on thermal derating.
Units
kHz
°C
°C
G’s
G’s
grams
TYPICAL CHARACTERISTICS
Characteristic Curves @12.0V V_in (See Note A)
Efficiency vs Output Current
90.0
85.0
80.0
75.0
70.0
65.0
60.0
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Current (A)
PT6643
PT6642
PT6641
PT6646
Safe Operating Area Curves (See Note B)
PT6642, @V_in =12V
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Output Current (A)
Airflow
200LFM
120LFM
60LFM
Nat conv
Ripple vs Output Current
150
125
100
75
50
25
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Current (A)
PT6645
PT6643
PT6644
PT6642
PT6641
PT6646
Power Dissipation vs Output Current
6
5
4
3
2
1
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Current (A)
PT6645
PT6643
PT6644
PT6642
PT6641
PT6646
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter.
Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
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