DATASHEET ISL80101-ADJ FN7834 Rev 3.00 High Performance 1A LDO August 26, 2015 The ISL80101-ADJ is a low voltage, high current, single output Features LDO specified at 1A output current. This LDO operates from 1.8% V accuracy guaranteed over line, load and input voltages from 2.2V to 6V, and is capable of providing OUT T = -40C to +125C output voltages from 0.8V to 5V. The ISL80101-ADJ features J an adjustable output. For the fixed output version of the Very low 130mV dropout voltage at V = 2.5V OUT ISL80101-ADJ, please refer to the ISL80101 datasheet. Very fast transient response A submicron BiCMOS process is utilized for this product family Programmable soft-starting to deliver the best in class analog performance and overall Power-good output value. This CMOS LDO will consume significantly lower quiescent current as a function of load compared to bipolar Excellent 65dB PSRR LDOs, which translates into higher efficiency and packages Current limit protection with smaller footprints. State of the art internal compensation Thermal shutdown function achieves a very fast load transient response. An external capacitor on the soft-start pin provides an adjustable Available in a 10 Ld DFN package soft-starting ramp. The ENABLE feature allows the part to be Pb-Free (RoHS compliant) placed into a low quiescent current shutdown mode. A Power-good logic output signals a fault condition. Applications Table 1 shows the differences between the ISL80101-ADJ and DSP, FPGA and P core power supplies others in its family: Noise-sensitive instrumentation systems TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS Post regulation of switched mode power supplies PROGRAMMABLE I ADJ OR FIXED LIMIT Industrial systems PART NUMBER I (DEFAULT) V LIMIT OUT ISL80101-ADJ No 1.75A ADJ Medical equipment ISL80101 No 1.75A 1.8V, 2.5V, Telecommunications and networking equipment 3.3V, 5.0V Servers ISL80101A Yes 1.62A ADJ Hard disk drives (HD/HDD) ISL80121-5 Yes 0.75A 5.0V Related Literature AN1592, ISL80101 High Performance 1A LDO Evaluation Board User Guide 2.5V 10% 1.8V 140 10 1 V V IN OUT 10F 10F 9 2 120 V V IN OUT C C OUT IN 2.61k 82pF C R 2 100 PB 3 10k 100k ADJ R 80 3 R PG 1.00k ISL80101-ADJ R 1 60 4 7 ENABLE PG 40 20 V = 2.5V OUT 6 SS 0.01F GND 0 C SS 0 0.2 0.4 0.6 0.8 1.0 5 OUTPUT CURRENT (A) FIGURE 2. DROPOUT vs LOAD CURRENT FIGURE 1. TYPICAL APPLICATION CIRCUIT FN7834 Rev 3.00 Page 1 of 12 August 26, 2015 DROPOUT VOLTAGE (mV)ISL80101-ADJ Block Diagram V IN EN CONTROL LOGIC FET DRIVER - EA WITH CURRENT REFERENCE + LIMIT THERMAL + VOUT SENSOR SOFT-START PG SS ADJ + PG - GND Ordering Information PART NUMBER PART V VOLTAGE TEMP RANGE PACKAGE OUT (Notes 3, 4) MARKING (Note 2) (C) (RoHS Compliant) PKG DWG. ISL80101IRAJZ (Note 1) DZAB ADJ -40 to +125 10 Ld 3x3 DFN L10.3x3 ISL80101EVAL2Z Evaluation Board NOTES: 1. Add -T* for Tape and Reel. Please refer to TB347 for details on reel specifications. 2. For other output voltages, contact Intersil Marketing. 3. 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. 4. For Moisture Sensitivity Level (MSL), please see product information page for ISL80101-ADJ. For more information on MSL please see techbrief TB363. FN7834 Rev 3.00 Page 2 of 12 August 26, 2015