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LTM4619EVPBF データシート(PDF) 7 Page - Linear Technology |
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LTM4619EVPBF データシート(HTML) 7 Page - Linear Technology |
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7 / 24 page  LTM4619 7 4619f SIMPLIFIED BLOCK DIAGRAM DECOUPLING REQUIREMENTS 4619 BD INTVCC PGOOD MODE/PLLIN EXTVCC TK/SS1 RUN1 COMP1 TK/SS2 RUN2 COMP2 FREQ SGND M3 M4 INTERNAL COMP INTERNAL FILTER CSS2 INTERNAL FILTER 10μF 1.5μF L2 60.4k CIN + VIN 4.5V TO 26.5V* COUT2 RSET2 19.1k + VOUT2 3.3V/4A VFB2 PGND M1 M2 CSS1 VIN POWER CONTROL 10μF L1 60.4k COUT1 RSET1 28k + VOUT1 2.5V/4A VFB1 PGND PGND SW1 SW2 1.5μF PGND INTERNAL COMP *USE EXTVCC FOR VIN ≤ 5.5V, OR TIE VIN AND EXTVCC TOGETHER FOR VIN ≤ 5.5V R1 R2 R2 R1 R2 •VIN = UVLO THRESHOLD = 1.22V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CIN External Input Capacitor Requirement (VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V) IOUT1 = 4A, IOUT2 = 4A 10 μF COUT1 COUT2 External Output Capacitor Requirement (VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V) IOUT1 = 4A IOUT2 = 4A 200 200 μF μF TA = 25°C. Use Figure 1 configuration. Figure 1. Simplified LTM4619 Block Diagram |
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