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AMG-PU005 Datasheet(PDF) 11 Page - alpha microelectronics gmbh |
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AMG-PU005 Datasheet(HTML) 11 Page - alpha microelectronics gmbh |
11 / 14 page AMG-PU005 Analog System Base Chip, I/O PowerStage, OP-Amps 8.4. Application Notes 8.4.1. Supply concepts The AMG-PU005 can be used with different supply strategies and ranges. It contains a buck regulator and a linear regulator. The minimum voltage drops of the regulators to be considered are: - Buck regulator: VDROPB=2V (to be adjusted by external resistor divider) - Linear regulator: VDROPL=1V (in case of saturation, VVL≤6V). Thus none or one or both regulators may be used (see operational voltage range limitations). The buck regulator is able to drive about 40mA external load in total. If it has to supply the linear regulator the maximum external load current will be reduced by the load of the linear regulator (max. 20mA). The buck regulator's external coil should be larger than 220uH. AMG-PU005 Revision: B 9. Nov. 2012 © All rights reserved Page 11 of 14 Figure 4: Different supply concepts overview Surge Prot. VP Buck Reg. 5V Linear Reg. VDD FB LX VS VL Surge Prot. VP Buck Reg. 5V Linear Reg. VDD FB LX VS VL Buck Reg. 5V Linear Reg. VDD FB LX VS VL Surge Prot. VP Buck Reg. 5V Linear Reg. VDD FB LX VS VL Surge Prot. VP a) Supply concept using buck and linear regulator b) Supply concept using buck only c) Supply concept using linear regulator only d) Supply concept using neither buck nor linear regulator (5V external supply |
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