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LX1663 Datasheet(PDF) 4 Page - Microsemi Corporation |
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LX1663 Datasheet(HTML) 4 Page - Microsemi Corporation |
4 / 15 page SINGLE-CHIP PROGRAMMABLE PWM CONTROLLERS WITH 5-BIT DAC LX1662/62A, LX1663/63A PRODUCT DA T ABOOK 1996/1997 Copyright © 1999 Rev. 1.1 11/99 4 P RODUCTION D ATA S HEET ELECTRICAL CHARACTERISTICS Table 1 - Adaptive Transient Voltage Output (Output Voltage Setpoint Typical) Time - 100µs/Div. FIGURE 1 — Output Transient Response (Using 5m Ω sense resistor and 5µH output inductor) Note: Adaptive Transient Voltage Output In order to improve transient response a 40mV offset is built into the Current Sense comparator. At high currents, the peak output voltage will be lower than the nominal set point , as shown in Figure 1. The actual output voltage will be a function of the sense resistor, output current and output ripple. 01111 1.34V 1.30V 01110 1.39V 1.35V 01101 1.44V 1.40V 01100 1.49V 1.45V 01011 1.54V 1.50V 01010 1.59V 1.55V 01001 1.64V 1.60V 01000 1.69V 1.65V 00111 1.74V 1.70V 00110 1.79V 1.75V 00101 1.84V 1.80V 00100 1.89V 1.85V 00011 1.94V 1.90V 00010 1.99V 1.95V 00001 2.04V 2.00V 00000 2.09V 2.05V 11111 2.04V 2.00V 11110 2.14V 2.10V 11101 2.24V 2.20V 11100 2.34V 2.30V 11011 2.44V 2.40V 11010 2.54V 2.50V 11001 2.64V 2.60V 11000 2.74V 2.70V 10111 2.84V 2.80V 10110 2.94V 2.90V 10101 3.04V 3.00V 10100 3.14V 3.10V 10011 3.24V 3.20V 10010 3.34V 3.30V 10001 3.44V 3.40V 10000 3.54V 3.50V VID4 VID3 VID2 VID1 VID0 Processor Pins Output Voltage (V CC_CORE) 0 = Ground, 1 = Open (Floating) 0.0A Nominal Output* * Nominal = DAC setpoint voltage with no adaptive output voltage positioning. |
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