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STODD03 Datasheet(PDF) 7 Page - STMicroelectronics |
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STODD03 Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 16 page STODD03 Typical application Doc ID 018980 Rev 1 7/16 4 Typical application Figure 3. Application circuit FB2 L2 C5 V OUT2 Step Down Step Up GND SW1 Out1 FB1 VIN_A EN1 VIN_P EN SW R1 R2 IN L1 V C1 C3 C2 C4 V OUT1 EN SW Power Switch Power Switch Control block SW2 PSWOUT VIN_PSW 3.3 V 6.5 V – 14 V 5 V 1,9,11 2 3 10 8 7 15 14 EN2 Step-up control block 4 6 13 16 5 12 AM09306v1 Table 7. List of external components (1) Component Value Recommended part number C1, C2, C3 10 µF Murata, GRM21BR61A106KE19L C4, C5 22 µF Murata, GRM32ER61C226KE20L L1 4.7 µH Coilcraft, LPS6225-472MLB L2 3.3 µH Coilcraft, LPS4018-332MLB R1, R2 33 k Ω , 3.3 kΩ VOUT1 = 8.8 V (2) 1. The components listed above refer to a typical applications circuit. Operation of the STODD03 is not limited to the choice of these external components. If a different solution is used, it is recommended to validate the suitability of the external components by thoroughly testing the application on a PCB evaluation board. 2. R1 and R2 are calculated according to the following formula: R1 = R2 x [(VOUT1 / VFB1)- 1]. Resistors in the range of 1 k to 50 k are recommended. |
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