DATASHEET ISL80510 FN8767 Rev 0.00 High Performance 1A LDO July 28, 2015 The ISL80510 is a single output Low Dropout voltage regulator Features (LDO) capable of sourcing up to 1A output current. This LDO 1.8% V accuracy guaranteed over line, load and operates from input voltages of 2.2V to 6V. The output voltage OUT T = -40C to +125C of ISL80510 can be programmed from 0.8V to 5.5V. J Very low 130mV dropout voltage at V = 2.5V OUT A submicron BiCMOS process is utilized for this product family to deliver the best in class analog performance and overall Stable with a 4.7F output ceramic capacitor value. This CMOS LDO consumes significantly lower quiescent Very fast transient response current as a function of load compared to bipolar LDOs, which Programmable output soft-start time translates into higher efficiency and packages with smaller footprints. Excellent PSRR over wide frequency range Current limit protection State-of-the-art internal compensation achieves a very fast load transient response and excellent PSRR. The ISL80510 Thermal shutdown function provides an output accuracy of 1.8% V accuracy over all OUT Available in an 8 Ld DFN package load, line and temperature variation (T = -40C to +125C). J An external capacitor on the soft-start pin provides an Pb-free (RoHS compliant) adjustable soft starting of the output voltage ramp to control the inrush current. The ENABLE feature allows the part to be Applications placed into a low quiescent current shutdown mode. Noise-sensitive instrumentation systems Table 1 shows the differences between the ISL80510 and Post regulation of switched mode power supplies others in its family. Industrial systems Medical equipment TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS Telecommunications and networking equipment PART NUMBER MAX OUTPUT CURRENT Servers ISL80510 1.0A Hard disk drives (HD/HDD) ISL80505 0.5A ISL80510 80 VIN VOUT V V OUT IN 1 8 70 V IN V OUT I = 0.6A OUT C C IN 2 7 OUT 60 EPAD FB R 1 SS C 6 3 PB 50 (optional) ENABLE GND 5 4 C SS 40 R 2 V = 2.3V IN I = 1A OUT I = 0.2A OUT 30 V = 1.8V OUT C = 10F OUT 20 C = 10nF PB R = 2.61k 1 10 R = 1k 2 0 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 1. TYPICAL APPLICATION CIRCUIT FIGURE 2. PSRR FN8767 Rev 0.00 Page 1 of 13 July 28, 2015 PSRR (dB)ISL80510 Block Diagram V IN REFERENCE + FET DRIVER -- SOFT-START WITH CURRENT EAEA ++ LIMIT CONTROL THERMAL ENABLE LOGIC SENSOR V OUT SS FB GND FIGURE 3. BLOCK DIAGRAM Ordering Information PART NUMBER PART TEMP RANGE PACKAGE PKG (Notes 1, 2, 3) MARKING (C) (RoHS Compliant) DWG. ISL80510IRAJZ 0510 -40 to +125 8 Ld 3x3 DFN L8.3X3J ISL80510EVAL1Z Evaluation Board NOTES: 1. Add -T* for Tape and Reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL80510. For more information on MSL please see Technical Brief TB363. FN8767 Rev 0.00 Page 2 of 13 July 28, 2015