Datasheet

STBB1-AXX Pin configuration
Doc ID 022197 Rev 2 5/22
3 Pin configuration
Figure 2. Pin connections (top through view)
Table 4. Pin description
Pin n° Symbol Name and function
1 VOUT Output voltage
2SW2
Switch pin - Internal switches are connected to this pin. Connect inductor
between SW1 to SW2
3 PGND Power ground
4SW1
Switch pin - Internal switches are connected to this pin. Connect inductor
between SW1 and SW2
5VIN
Power input voltage. Connect a ceramic bypass capacitor (10 µF minimum)
between this pin and PGND
6EN
Enable pin. Connect this pin to GND or a voltage lower than 0.4 V to shut down
the IC. A voltage higher than 1.2 V is required to enable the IC.
7
MODE
(SYNC)
Operation mode selection.
If MODE pin is low, the STBB1-A automatically switches between pulse
skipping and fixed frequency PWM according to the load level.
If MODE pin is pulled high, the STBB1-A works always in PWM mode.
When a square waveform is applied, this pin provides the clock signal for
oscillator synchronization
8 VINA Supply voltage for control stage
9 GND Signal ground
10 FB Feedback voltage
Exposed pad Power ground