Datasheet

VIPER06 Pin settings
Doc ID 022794 Rev 1 5/28
3 Pin settings
Figure 3. Connection diagram (top view)
Note: The copper area for heat dissipation has to be designed under the DRAIN pins.
DRAIN
DRAIN
AM11339v1
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
GND
VDD
FB
COMP
LIM
Table 2. Pin description
Pin
Name Function
DIP-7 SSO10
11GND
Connected to the source of the internal power MOSFET and controller
ground reference.
22VDD
Supply voltage of the control section. This pin provides the charging
current of the external capacitor.
33LIM
This pin allows setting the drain current limitation. The limit can be
reduced by connecting an external resistor between this pin and GND.
Pin left open if default drain current limitation is used.
44FB
Inverting input of the internal transconductance error amplifier.
Connecting the converter output to this pin through a single resistor
results in an output voltage equal to the error amplifier reference
voltage (see V
FB_REF
in Table 6). An external resistor divider is
required for higher output voltages.
55COMP
Output of the internal transconductance error amplifier. The
compensation network has to be placed between this pin and GND to
achieve stability and good dynamic performance of the voltage control
loop. The pin is used also to directly control the PWM with an
optocoupler. The linear voltage range extends from V
COMPL
to
V
COMPH
(Ta bl e 6).
7, 8 6-10 DRAIN
High-voltage drain pins. The built-in high-voltage switched startup bias
current is drawn from these pins too.
Pins connected to the metal frame to facilitate heat dissipation.