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SMM205NR20 データシート(PDF) 11 Page - Summit Microelectronics, Inc. |
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SMM205NR20 データシート(HTML) 11 Page - Summit Microelectronics, Inc. |
11 / 20 page SMM205 Preliminary Information Summit Microelectronics, Inc 2069 1.4 6/23/03 11 For Example: If Vout=3.3V, R4=63.4K, 15% of Vout=0.5V ITRIM=8uA, RTRIM=62.5K Therefore Rtrim standard 1% value down from 62.5K C8 0.1uF U3 SMM205 1 2 3 4 5 6 8 10 11 12 14 15 16 17 18 19 20 28 SCL A2 START A1 READY A0 WP# FILT_CAP FAULT# COMP2 VMA TRIM_CAPB TRIMB VMB TRIM_CAPA COMP1 TRIMA SDA +12VIN (+10V to +15V) START R6 10K C5 0.02uF J1 1 2 3 4 5 6 7 8 9 10 Gnd SCL Gnd3 SDA Rsrv5 MR +10V Rsrv8 +5V Rsrv10 D1 DIODE FAULT# C4 0.1uF R2 10K START R7 10K READY The SMM205 START pin must be inactive during power-up so that the TRIM pin is high impedence. Once power is nominal, the START pin can be active to start margin and ADOC functions C1 1uF U2 Switching Regulator +Vout +Vin VADJ (VREF) PGOOD R5 20k RTRIM(R3) is calculated as follows: VTRIMlow=0.3V, Regulator VREF=0.8V The current through R3 is ITRIM=(0.8-0.3)/RTRIM (ITRIM)(R4) > 15% of VOUT RTRIMmax should be < the calculated value R4 RSET1 C7 0.01uF R3 RTRIM R1 10K R8 10K SMX3200 I2C Programming Connector 10 pin Header R1 and R2 need only be placed once on the I2C bus VOUT Figure 7 – SMM205 Applications schematic for an adjustable switching regulator (Full regulator circuit not shown). APPLICATIONS INFORMATION (CONTINUED) |
同様の部品番号 - SMM205NR20 |
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同様の説明 - SMM205NR20 |
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