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LTM4676A Folha de dados(PDF) 19 Page - Linear Technology |
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LTM4676A Folha de dados(HTML) 19 Page - Linear Technology |
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19 / 136 page  LTM4676A 19 4676afa For more information www.linear.com/LTM4676A siMpliFieD block DiagraM Decoupling requireMenTs + + VIN0 VOUT0 VIN 5.75V TO 26.5V SW0 SNUB0 GND ISNS0b– ISNS0b+ ISNS0a+ ISNS0a– TSNS0b TSNS0a VOSNS0+ VORB0+ VOSNS0– LOCAL HIGH FREQ MLCCs x1 VORB0– COMP0a COMP0b VOUT1 SW1 SNUB1 GND ISNS1b– ISNS1b+ ISNS1a+ ISNS1a– TSNS1b TSNS1a VOSNS1[+] SGND [VOSNS1–] COMP1a CONTROLLER SIGNAL GND COMP1b SYNC ASEL 4676A F01 VDD25 VOUT0CFG VTRIM0CFG VTRIM1CFG VOUT1CFG FSWPHCFG SCL 5V TOLERANT; PULL-UP RESISTORS NOT SHOWN 5V TOLERANT; PULL-UP RESISTORS NOT SHOWN 3.3V TOLERANT; PULL-UP RESISTOR NOT NEEDED SDA ALERT WP RUN0 RUN1 GPIO0 GPIO1 SHARE_CLK COUT0LF COUT1LF COUT1HF COUT0HF VOUT0 ADJUSTABLE UP TO 5.5V UP TO 13A SVIN 1µF 2.2nF 1µF MT0 600nH 600nH THERMAL SENSOR THERMAL SENSOR MB0 MT1 MB1 2.2µF 2.2µF INTVCC VDD33 VIN1 CINH CINL THERMAL SENSOR ANALOG READBACK SIGNALS TO ERROR AMPLIFIER POWER CONTROL ANALOG SECTION POWER MANAGEMENT DIGITAL SECTION + – LOAD0 LOCAL HIGH FREQ MLCCs LOAD1 + VORB1[+] VOUT1 ADJUSTABLE UP TO 5.5V UP TO 13A 2.2nF INTERNAL COMP SPI SLAVE SPI MASTER SYNC DRIVER OSC (32MHz) DIGITAL ENGINE EEPROM ROM RAM INTERNAL COMP ADC 3.3V TOLERANT; PULL-UP RESISTORS NOT SHOWN 3.3V TOLERANT; PULL-UP RESISTOR NOT SHOWN CONFIGURATION RESISTORS TERMINATING TO SGND NOT SHOWN Figure 1. Simplified LTM4676A Block Diagram SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CINH External High Frequency Input Capacitor Requirement (5.75V ≤ VIN ≤ 26.5V, VOUTn Commanded to 1.000V) IOUT0 = 13A, 3 × 22μF, or 4 × 10μF IOUT1 = 13A, 3 × 22μF, or 4 × 10μF 40 66 µF COUTnHF External High Frequency Output Capacitor Requirement (5.75V ≤ VIN ≤ 26.5V, VOUTn Commanded to 1.000V) IOUT0 = 13A IOUT1 = 13A 400 400 µF µF TA = 25°C. Using Figure 1 configuration. |
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