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ADP1614-650-EVALZ Arkusz danych(PDF) 10 Page - Analog Devices |
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ADP1614-650-EVALZ Arkusz danych(HTML) 10 Page - Analog Devices |
10 / 16 page ADP1614 Data Sheet Rev. 0 | Page 10 of 16 THEORY OF OPERATION The ADP1614 current-mode, step-up switching converter boosts a 2.5 V to 5.5 V input voltage to an output voltage as high as 20 V. The internal switch allows a high output current, and the 650 kHz/1.3 MHz switching frequency allows the use of tiny external components. The switch current is monitored on a pulse-by-pulse basis to limit the current to the value set by the RCL resistor on the CLRES pin. SW PWM COMPARATOR UVLO COMPARATOR TSD COMPARATOR OSCILLATOR S R Q D COMPARATOR DREF + + VIN VIN CURRENT SENSING DRIVER BAND GAP N1 BG RESET 1.1MΩ AGND VIN UVLOREF TSENSE TREF ERROR AMPLIFIER VBG 2 1 5.5µA VSS RCOMP CCOMP COMP SS FB CSS R1 R2 RCL CIN VOUT 8 L1 D1 A VOUT COUT 6 SW 7 3 9 5 GND 4 GND 11 EP AGND EN CLRES ADP1614 10 VIN >1.6V <0.3V SOFT START Figure 25. Block Diagram with Step-Up Regulator Application Circuit |
Podobny numer części - ADP1614-650-EVALZ |
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Podobny opis - ADP1614-650-EVALZ |
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