DATASHEET ISL80101A FN7712 Rev 5.00 High Performance 1A Linear Regulator with Programmable Current Limiting November 17, 2016 The ISL80101A is a low dropout voltage, single output LDO Features with programmable current limiting. This LDO operates from 2% V accuracy guaranteed over line, load and input voltages of 2.2V to 6V, and is capable of providing output ADJ T = -40C to +125C voltages of 0.8V to 5V. Other custom voltage options are J available upon request. Very low 212mV dropout voltage at V = 4.5V IN A submicron BiCMOS process is utilized for this product family High accuracy current limit programmable up to 1.75A to deliver the best-in-class analog performance and overall Very fast transient response value. The programmable current limiting improves system 100V output noise RMS reliability of end applications. An external capacitor on the soft-start pin provides an adjustable soft-starting ramp. The Power-good output ENABLE feature allows the part to be placed into a low Programmable soft-start quiescent current shutdown mode. Over-temperature protection This CMOS LDO will consume significantly lower quiescent Small 10 Ld DFN package current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller Applications footprints. Quiescent current is modestly compromised to achieve a very fast load transient response. Telecommunications and networking Medical equipment Table 1 shows the differences between the ISL80101A and others in its family: Instrumentation systems TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS USB devices Gaming PROGRAMMABLE I ADJ OR FIXED LIMIT PART NUMBER I (DEFAULT) V LIMIT OUT Routers and switchers ISL80101-ADJ No 1.75A ADJ ISL80101 No 1.75A 1.8V, 2.5V, 3.3V, 5.0V ISL80101A Yes 1.62A ADJ ISL80121-5 Yes 0.75A 5.0V 5.0V 5% 3.3V 1 10 V V IN OUT 1.5 V = 4.5V IN 10F 10F 9 2 V V IN OUT C C OUT IN 2.61k R 100pF SET R C 1.2 PB 3 3 8 10k 100k I ADJ SET R 1 0.464k 0.9 ISL80101A V = 5.5V IN R 2 0.6 4 7 V = 5.0V ENABLE PG IN 0.3 6 SS 0.01F GND 0.0 C SS 5 10 100 1000 R (k) SET 2.9x2xV 1 IN I ~ 1.62 ---------------------------------------- LIMIT R k SET FIGURE 1. TYPICAL APPLICATION FN7712 Rev 5.00 Page 1 of 13 November 17, 2016 CURRENT LIMIT (A)ISL80101A Block Diagram SS THERMAL SHUTDOWN V IN + - CURRENT V OUT LIMITER I SET PG VOLTAGE POWER- REFERENCE GOOD ADJ ENABLE GND Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG (Notes 1, 2, 3) MARKING V VOLTAGE (C) (RoHS COMPLIANT) DWG. OUT ISL80101AIRAJZ DZAC ADJ -40 to +125 10 Ld 3x3 DFN L10.3x3 ISL80101AEVAL2Z Evaluation Board NOTES: 1. Add -T suffix for 6k unit tape and reel option. 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), see device information page for ISL80101A. For more information on MSL see techbrief TB363. FN7712 Rev 5.00 Page 2 of 13 November 17, 2016
