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AP3421,A,B Datasheet(PDF) 9 Page - BCD Semiconductor Manufacturing Limited |
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AP3421,A,B Datasheet(HTML) 9 Page - BCD Semiconductor Manufacturing Limited |
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9 / 15 page  Preliminary Datasheet 1.3MHz, Dual 1.0A Synchronous Step-down Converters AP3421/A/B May. 2011 Rev. 1.3 BCD Semiconductor Manufacturing Limited 9 IO1 500mA/div VO1 (AC) 100mV/div IO2 500mA/div VO2 (AC) 50mV/div VIN 2V/div VO1 2V/div VO2 1V/div VPOR 2V/div V01 2V/div VO2 1V/div VPOR 5V/div VIN 5V/div Typical Performance Characteristics (Continued) VIN=VE/S=5V, VO1=2.5V, VO2=1.2V, L1=L2=3.3μH, C1=C3=10μF, C2=C2’=10μF, TA=25°C, unless otherwise specified. Time 4ms/div Time 400 μs/div Figure 12. Start-up from VIN Figure 13. Power-down from VIN Time 100 μs/div Time 100 μs/div Figure 14. Load Transient Figure 15. Load Transient (VO=2.5V IO=0.5A to 1.0A) (VO=1.2V IO=0.5A to 1.0A) |
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