
DocID028720 Rev 1 5/19
HVLED002 Pin connection and functions
19
2 Pin connection and functions
Figure 2. Pin connection (top view)
3 Thermal data
Table 3. Pin functions
No. Function Description
1 COMP This pin is the error amplifier output and is made available for loop compensation.
2V
FB
This is the inverting input of the error amplifier. It is normally connected to the
switching power supply output through a resistor divider.
3I
SENSE
A voltage proportional to the inductor current is connected to this input. The PWM
uses this information to terminate the output switch conduction.
4R
T
/C
T
The oscillator frequency and maximum output duty cycle are programmed by the
connecting resistor R
T
to V
REF
and the capacitor C
T
to ground. An operation to
500 kHz is possible.
5 GROUND This pin is the ground reference of the device.
6OUTPUT
This output directly drives the gate of a power MOSFET. Peak currents up to 1 A
are sourced and sunk by this pin.
7V
i
This pin is the positive supply of the control IC.
8V
REF
This is the reference output. It provides the charging current for the capacitor C
T
through the resistor R
T
.
Table 4. Thermal data
Symbol Description SO8 Unit
R
th j-amb
Thermal resistance junction ambient 150 °C/W
T
stg
Storage temperature range -65 to 150 °C
T
J
Junction operating temperature -40 to 150 °C
T
L
Lead temperature (soldering 10 s) 300 °C