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LTC1479 Datasheet(PDF) 6 Page - Linear Technology |
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LTC1479 Datasheet(HTML) 6 Page - Linear Technology |
6 / 12 page LTC4416/LTC4416-1 4416fa BLOCK DIAGRA VREF E2 4 V2 7 – + VREF E1 2 GND 3 VS 8 V1 9 – + A2 C2 RAIL2 RAIL1 SECOND ANALOG CONTROLLER BAND-GAP REFERENCE IG(SRC) IG(OFF) IG2 8.5V G2 H2 IG(SNK) IGFON(SNK) 6 A1 FIRST ANALOG CONTROLLER IG(SRC) IG(OFF) 8.5V G1 IG(SNK) VREF RAILBG IGFON(SNK) 10 4416 BD 5 H1 1 EN2 EN2 EN1 EN1 EN2 EN1 C1 IG1 Operation can best be understood by referring to the Block Diagram which illustrates the internal circuit blocks. The LTC4416/LTC4416-1 are divided into three sections, namely: 1. The channel 1 controller consisting of A1, C1, the “first analog contoller,” the G1 drivers and the H1 output driver. 2. The band-gap reference 3. The channel 2 controller consisting of A2, C2, the “second analog controller,” the G2 drivers and the H2 output driver. Each of the three sections has its own derived internal power supply referred to as a rail. RAIL1 provides power to the channel 1 controller. RAIL2 provides power to the channel 2 controller. The internal RAILBG provides power to the band-gap reference. The internal rail1 derives its power from the higher voltage of V1 and VS. The internal rail2 derives its power from the higher voltage of V2 and VS. RAILBG derives its power from the highest voltage of V1, V2, and VS. All three sections share a common ground connected to the GND pin. OPERATIO |
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