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ISL6128IR Datasheet(PDF) 11 Page - Intersil Corporation |
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ISL6128IR Datasheet(HTML) 11 Page - Intersil Corporation |
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11 / 21 page  11 FN9005.8 February 5, 2007 Figures 9 and 10 illustrate the timing relationships between the EN input, RESET#, DLY and GATE outputs and the VOUT voltage for a single channel being turned on and off respectively. RESET# is not shown in Figure 9 as it asserts 160ms after the last GATE goes high. All IC family variants share similar function for DLY_X capacitor charging, GATE and RESET# operation. Figures 11 through 14 illustrate the principal feature and functional differences for each of the ISL6125, ISL6126, ISL6127 and ISL6128 variants. Figure 11 features the ISL6125 open drain outputs being sequenced on and off along with RESET# relationship which is similar to all other family variants. Figure 12 illustrates the independent input feature of the ISL6126 which allows once the EN# is low for each UVLO to be individually satisfied and for its associated GATE to turn-on. Only when the last variable VIN is satisfied as shown does the RESET# release to signal all input voltages are valid. Figure 13 shows the ISL6127 pre-programmed ABCD on DCBA off order of sequencing with minimal non-adjustable delay between each. Figure 14 demonstrates the independence of the redundant two rail sequencer. It shows that either one of the two groups can be turned off and the ABCD order of restart with capacitor programmable delay once both EN inputs are pulled low. Using the ISL6125EVAL1 Platform The ISL6125EVAL1 is the ISL6125 specific evaluation board providing for easy evaluation of the ISL6125 with its unique open drain outputs. The UVLO levels, sequence and delays are programmed exactly like the other ISL612X ICs but the ISL6125 has sequenced open drain outputs rather than charge pumped driven GATE outputs. See Figure 16 for its schematic and photograph. Typical Performance Waveforms FIGURE 7. ISL6124 SEQUENCED TURN-ON FIGURE 8. ISL6124 SEQUENCED TURN-OFF FIGURE 9. ISL6123 SINGLE CHANNEL TURN-ON FIGURE 10. ISL6123 SINGLE CHANNEL TURN-OFF 1V/DIV 40ms/DIV 5VOUT 3.3VOUT 2.5VOUT RESET# ENABLE# 1.5VOUT 1V/DIV 20ms/DIV 5VOUT 3.3VOUTPUT 2.5VOUT 1.5VOUT ENABLE# 10ms/DIV GATE 2V/DIV DLY_Vth EN 2V/DIV DLY_ON 1V/DIV 3.3VO 1V/DIV TdelENLO 4ms/DIV 3.3VO 1V/DIV RESET# 2V/DIV GATE 2V/DIV EN 2V/DIV DLY_OFF 1V/DIV DLY_Vth ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128, ISL6130 |
Similar Part No. - ISL6128IR |
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Similar Description - ISL6128IR |
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