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AS1170 数据表(PDF) 49 Page - OSRAM GmbH |
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AS1170 数据表(HTML) 49 Page - OSRAM GmbH |
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49 / 53 page  AS1170 Application information Datasheet • PUBLIC • Document Feedback DS001083 • v2-00 • 2024-Feb-05 49 / 53 / Figure 32: Layout recommendation (1) If component placement rules allow, move all components close to the AS1170 to reduce the area and length of Loop1 and Loop2. An additional 100 nF (e.g. Murata GRM155R61C104, > 50 nF @ 3 V, 0402 size) capacitor CVIN2 in parallel to CVIN is recommended to filter high frequency noise for the power supply of AS1170. This capacitor should be as close as possible to the GND/VIN pins of AS1170. 10.3 5 V operating mode The AS1170 can be used to power a 5 V system (e.g. audio amplifier). The operating mode is selected by setting register bit const_v_mode=1. In this operating mode, the current sinks are disabled and cannot be switched on. Information: • There is always a diode between V IN and VOUT1/2 due to the internal circuit. Therefore VOUT1/2 cannot be completely switched off. |
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