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STBB3JCC Folha de dados(PDF) 6 Page - STMicroelectronics

Nome de Peças STBB3JCC
Descrição Electrónicos  2 A, high efficiency single inductor buck-boost DC-DC converter and high brightness WLED driver
PDF  27 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STBB3JCC Folha de dados(HTML) 6 Page - STMicroelectronics

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Pin configuration
STBB3JCC
6/27
DocID025425 Rev 5
3
Pin configuration
Figure 3. Pin connection top view
Figure 4. Pin connection bottom view
AM16823v1
AM16824v1
Table 3. Pin description
Pin name
Pin
Description
VOUT
A1, A2,
A3
Output voltage.
SW1
D1, D2,
D3
Switch pin - internal switches are connected to this pin. Connect
inductor between SW1 to SW2.
PGND
C1, C2,
C3
Power ground.
SW2
B1, B2,
B3
Switch pin - internal switches are connected to this pin. Connect
inductor between SW1 and SW2.
EN
E4
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.
MODE/SYNC
D4
The MODE pin selects auto transition mode and fixed frequency PWM
mode. If the MODE pin is low, the STBB3JCC automatically switches
between pulse-skipping and standard fixed frequency PWM according
to the load level. If the MODE pin is pulled high, the STBB3JCC works
always at fixed frequency. MODE pin must be pulled high if the
STBB3JCC is used as HB WLED driver (constant current) for best
dynamic performance.
When a square wave is applied, this pin provides the clock signal for
oscillator synchronization.
VIN_A
C4
Supply voltage for control stage. Connecting a capacitor of minimum
100 nF between VIN_A and GND.
VIN_SW
E1, E2,
E3
Power input voltage.
GND
B4
Signal ground.
FB
A4
Feedback voltage.



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