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LTC1046 Datasheet(PDF) 4 Page - Linear Technology |
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LTC1046 Datasheet(HTML) 4 Page - Linear Technology |
4 / 12 page LTC1046 4 AMBIENT TEMPERATURE ( °C) –55 26 30 32 34 36 38 40 25 50 100 125 1046 G11 28 –25 0 75 V+ = 5V COSC = 0pF AMBIENT TEMPERATURE ( °C) 0 1 10 100 14 5 7 1046 G10 23 6 TA = 25°C COSC = 0pF CC HARA TERISTICS A TYPICALPERFOR CE TEST CIRCUIT Figure 1 S APPLICATI I FOR ATIO Theory of Operation To understand the theory of operation of the LTC1046, a review of a basic switched capacitor building block is helpful. In Figure 2, when the switch is in the left position, capacitor C1 will charge to voltage V1. The total charge on C1 will be q1 = C1V1. The switch then moves to the right, discharg- ing C1 to voltage V2. After this discharge time, the charge on C1 is q2 = C1V2. Note that charge has been transferred from the source, V1, to the output, V2. The amount of charge transferred is: ∆q = q1 – q2 = C1(V1 – V2). If the switch is cycled “f” times per second, the charge transfer per unit time (i.e., current) is: I = f • ∆q = f • C1(V1 – V2). Figure 2. Switched Capacitor Building Block Oscillator Frequency as a Oscillator Frequency vs Function of Supply Voltage Temperature (Using Test Circuit in Figure 1) COSC EXTERNAL OSCILLATOR C2 10 µF VOUT V+ (5V) RL IS IL 1046 F01 1 2 3 4 8 7 6 5 V + OSC LV VOUT BOOST CAP + GND CAP – LTC1046 C1 10 µF + C1 f C2 1046 F02 V2 V1 RL |
Similar Part No. - LTC1046 |
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Similar Description - LTC1046 |
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