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ISL85005AEVAL1Z Datasheet(PDF) 6 Page - Intersil Corporation |
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ISL85005AEVAL1Z Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 22 page ISL85005, ISL85005A 6 FN8871.0 November 28, 2016 Submit Document Feedback Typical Application Schematics FIGURE 4. ISL85005 VIN RANGE FROM 4.5V TO 18V WITH INTERNAL COMPENSATION FIGURE 5. ISL85005A VIN RANGE FROM 4.5V TO 18V, WITH INTERNAL COMPENSATION WITH PROGRAMMABLE SOFT-START GND = DEM; VCC = FCCM SYNC/ PG EN FB COMP BOOT VDD VIN VIN PHASE AGND 2 3 4 1 5 11 10 9 12 8 6 7 PHASE PGND ISL85005 MODE PG EN C1 R1 R2 C3 C4 C5 C6 C8 C9 L1 VIN VOUT 5A MAX 4.5V TO 18V MODE SS PG EN FB COMP BOOT VDD VIN VIN PHASE AGND 2 3 4 1 5 11 10 9 12 8 6 7 PHASE PGND ISL85005A PG EN C1 R1 R2 C3 C4 C5 C6 C8 C9 L1 VIN VOUT 5A MAX 4.5V TO 18V CSS TABLE 2. COMPONENTS SELECTION (REFER TO Figures 1 AND 2) VOUT 1.2V 1.8V 2.5V 3.3V 5V C5, C6 1OµF 1OµF 1OµF 1OµF 1OµF C8, C9 47µF 47µF 47µF 47µF 47µF C1 15pF 15pF 15pF 15pF 15pF L1 3.3µH 3.3µH 3.3µH 3.3µH 3.3µH R1 499kΩ 499kΩ 499kΩ 499kΩ 499kΩ R2 998kΩ 392kΩ 232kΩ 157kΩ 95.3kΩ NOTE: VIN = 12V, IOUT = 5A; The components selection table is a suggestion for typical application using internal compensation mode. For application that requires high output capacitance greater than 200µF, R1 should be adjusted to maintain loop response bandwidth about 40kHz. See “Loop Compensation Design” on page 19 for more detail. |
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