Datasheet

PIN CONNECTION (Top view)
2/15
Symbol Parameter Heptawatt Powerdip
R
th j-case
Thermal resistance junction-case max 4°C/W -
R
th j-pins
Thermal resistance junction-pins max - 14°C/W
R
th j-amb
Thermal resistance junction-ambient max 50°C/W 80°C/W*
* Obtained with the GND pins soldered to printed circuit with minimized copper area.
THERMAL DATA
HEPTAWATT POWERDIP NAME
FUNCTION
1 7 SUPPLY VOLTAGE Unregulated voltage input. An internal regulator powers
the internal logic.
2 10 FEEDBACK INPUT The feedback terminal of the regulation loop. The output
is connected directly to this terminal for 5.1V operation;
it is connected via a divider for higher voltages.
3 11 FREQUENCY
COMPENSATION
A series RC network connected between this terminal
and ground determines the regulation loop gain
characteristics.
PIN FUNCTIONS
Symbol Parameter Value Unit
V
7
Input voltage 50 V
V
7
-V
2
Input to output voltage difference 50 V
V
2
Negative output DC voltage -1 V
Output peak voltage at t = 0.1µs; f = 100KHz -5 V
V
11
,V
15
Voltage at pin 11, 15 5.5 V
V
10
Voltage at pin 10 7 V
I
11
Pin 11 sink current 1 mA
I
14
Pin 14 source current 20 mA
P
tot
Power dissipation at T
pins
≤ 90°C (Powerdip)
T
case
≤ 90°C (Heptawatt)
4.3
15
W
W
T
j
,T
stg
Junction and storage temperature -40 to 150 °C
ABSOLUTE MAXIMUM RATINGS
L4962