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STBB2J29-R 数据表(PDF) 6 Page - STMicroelectronics |
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STBB2J29-R 数据表(HTML) 6 Page - STMicroelectronics |
6 / 25 page Pin configuration STBB2 6/25 DocID022745 Rev 9 4 Pin configuration Figure 5. Pin connections (top view) A4 [EN] B4 [BP] C4 [MODE] D4 [VSEL] A3 [VINA] B3 [VINA1] C3 [GND] D3 [GND] A2 [VIN] B2 [SW1] C2 [PGND] D2 [SW2] A1 [VIN] B1 [SW1] C1 [PGND] D1 [SW2] E4 [GND] E3 [FB] E2 [VO] E1 [VO] A4 [EN] B4 [BP] C4 [MODE] D4 [VSEL] A3 [VINA] B3 [VINA1] C3 [GND] D3 [GND] A2 [VIN] B2 [SW1] C2 [PGND] D2 [SW2] A1 [VIN] B1 [SW1] C1 [PGND] D1 [SW2] E4 [GND] E3 [FB] E2 [VO] E1 [VO] A4 [EN] B4 [BP] C4 [MODE] D4 [VSEL] A3 [VINA] B3 [VINA1] C3 [GND] D3 [GND] A2 [VIN] B2 [SW1] C2 [PGND] D2 [SW2] A1 [VIN] B1 [SW1] C1 [PGND] D1 [SW2] E4 [GND] E3 [FB] E2 [VO] E1 [VO] Top view Bottom view Table 5. Pin description Pin name Pin n° Description VOUT E1, E2 Output voltage. SW2 D1, D2 Switch pin - internal switches C and D are connected to this pin. Connect inductor between SW1 to SW2. PGND C1, C2 Power ground. SW1 B1, B2 Switch pin - internal switches A and B are connected to this pin. Connect inductor between SW1 and SW2. EN A4 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. Do not leave this pin floating. MODE C4 When in normal operation, the MODE pin selects between auto mode and forced PWM mode. If the MODE pin is low, the STBB2 automatically switches between pulse-skipping and standard PWM according to the load level. If the MODE pin is pulled high, the STBB2 always works in PWM mode. Do not leave this pin floating. VINA A3 Supply voltage for control stage. VINA1 B3 A 100 Ω resistor is internally connected between VIN and VINA1. Connecting a 1 µF capacitor between VINA1 and GND. VIN A1, A2 Power input voltage. Connect a ceramic bypass capacitor (10 µF min.) between this pin and PGND. GND C3, D3, E4 Signal ground. FB E3 Feedback voltage. For the fixed version this pin must be connected to VOUT. |
类似零件编号 - STBB2J29-R |
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类似说明 - STBB2J29-R |
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