Pins description and connection diagrams L6935
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2 Pins description and connection diagrams
Figure 4. Pins connection (top view)
2.1 Pin descriptions
11
12
13
14
GND
N.C.
N.C.
PGOOD
N.C.
N.C.
N.C.
N.C.
2
3
4
5
L6935
VOUT
VOUT
VOUT
ADJ
EN
VIN
VIN
VIN
10987
16 17 18 19
SS
20
N.C.
1
VBIAS
6
15
N.C.
Table 2. Pins descriptions
Pin # Name Function
1 N.C. Not internally connected.
2 GND Ground connection. Connect to PCB ground plane.
3, 4 N.C. Not internally connected.
5 PGOOD
Power Good output flag: the pin is open drain and it is forced low if the
output voltage is lower than 90 % of the programmed voltage. If not used, it
can be left floating.
6 VBIAS
Input bias supply. This pin supplies the internal logic to drive the power
N-channel MOSFET that realize the voltage conversion. Connect directly to
V
IN
or to a different supply ranging from V
IN
to 5 V.
The voltage connected to this pin MUST always be higher or equal that V
IN
.
7EN
Enables the device if a voltage higher than 1 V is applied.
When pulled low, the device is in low-power consumption: everything inside
the controller is kept OFF.
See Section 6.2 for details about EN signal and power sequencing.
8 to 10 VIN
Power supply voltage. This pin is connected to the drain of the internal
N-channel MOSFET.
Filter to GND with capacitor larger than the one used for V
OUT
.
11 to15 N.C. Not internally connected.
16 to 18 VOUT
Regulated output voltage. This pin is connected to the source of the
internal N-mos. MLCC capacitor are supported. Filter to GND with
capacitor smaller than the one used for V
IN
.
