DATASHEET ISL9021 FN6867 Rev 2.00 250mA Single LDO with Low I , Low Noise and High PSRR LDO Q January 14, 2010 The ISL9021 is a single LDO providing high performance Features low input voltage, high PSRR. It delivers guaranteed High Performance LDO with 250mA guaranteed continuous 250mA load current and is stable with 1F to continuous output current 4.7F of output capacitance (30%) with an ESR range of Input Voltage Range: 1.5V to 5.5V 5m to 400m . Output Voltage Range: 0.9V to 3.3V The input voltage range for the ISL9021 is between 1.5V to 5.5V and the output voltage comes in many fixed voltage High PSRR: 75dB 10kHz, 50dB 1MHz options with 1.8% accuracy over temperature, line and load Low Quiescent Current: 35A ranges. Other output voltage within the range of 0.9V to 3.3V may be available upon request. The ISL9021 has typical Dropout Voltage: <150mV 250mA PSRR of 75dB 10kHz and 50dB 1MHz. Stable with 1F to 4.7F Output Capacitance (30%) with an ESR range of 5m to 400m The reverse current protection feature prevents current from flowing back to the power source when the output voltage is 1.8% Output Accuracy Over-Temperature/Load/Line pulled higher than the input. Soft-start Limits Input Current Surge During Enable The ISL9021 is offered in tiny 4-bump 1.155mmx0.975mm Current Limit and Overheat Protection WLCSP and 1.6mmx1.6mm 6 Ld TDFN packages. -40C to +85C Operating Temperature Range Pinouts Available in 1.155mmx0.975mm 4-bump WLCSP ISL9021 Package and 1.6mmx1.6mm 6 Ld TDFN (6 LD 1.6x1.6 TDFN) TOP VIEW Pb-free (RoHS compliant) Applications 6 VIN 1 VO PDAs, Cell Phones and Smart Phones NC 2 5 NC Portable Instruments, MP3 Players EN 3 4 GND Handheld Devices including Medical Handhelds ISL9021 (4 BALL 1.155x0.975 WLCSP) TOP VIEW GND VOUT A2 B2 EN A1 B1 VIN FN6867 Rev 2.00 Page 1 of 10 January 14, 2010 NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PART ISL9021AISL9021 Ordering Information PACKAGE PART NUMBER PART V Voltage TEMP RANGE Tape & Reel PACKAGE O MARKING (Note 2) (C) (Pb-free) DWG. ISL9021II1Z-T (Notes 1, 3) 0211 1.1 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021II2Z-T (Notes 1, 3) 0212 2.1 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021II3Z-T (Notes 1, 3) 0213 1.3 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021II4Z-T (Notes 1, 3) 0214 1.0 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIBZ-T (Notes 1, 3) 021B 1.5 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IICZ-T (Notes 1, 3) 021C 1.8 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIFZ-T (Notes 1, 3) 021F 2.5 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIGZ-T (Notes 1, 3) 021G 2.7 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIJZ-T (Notes 1, 3) 021J 2.8 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIKZ-T (Notes 1, 3) 021K 2.85 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIMZ-T (Notes 1, 3) 021M 3.0 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IINZ-T (Notes 1, 3) 021N 3.3 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIPZ-T (Notes 1, 3) 021P 1.85 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIRZ-T (Notes 1, 3) 021R 2.6 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IISZ-T (Notes 1, 3) 021S 1.6 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IITZ-T (Notes 1, 3) 021T 1.9 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIWZ-T (Notes 1, 3) 021W 1.2 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IIYZ-T (Notes 1, 3) 021Y 0.9 -40 to +85 4 Ball WLCSP W2x2.4 ISL9021IRU1Z-T (Notes 1, 4) S1 1.1 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRU2Z-T (Notes 1, 4) S9 2.1 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRU3Z-T (Notes 1, 4) S3 1.3 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRU4Z-T (Notes 1, 4) S0 1.0 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUBZ-T (Notes 1, 4) S4 1.5 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUCZ-T (Notes 1, 4) S6 1.8 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUFZ-T (Notes 1, 4) T0 2.5 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUGZ-T (Notes 1, 4) T2 2.7 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUJZ-T (Notes 1, 4) T3 2.8 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUKZ-T (Notes 1, 4) T4 2.85 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUMZ-T (Notes 1, 4) T5 3.0 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUNZ-T (Notes 1, 4) R8 3.3 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUPZ-T (Notes 1, 4) S7 1.85 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRURZ-T (Notes 1, 4) T1 2.6 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUSZ-T (Notes 1, 4) S5 1.6 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUTZ-T (Notes 1, 4) S8 1.9 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUWZ-T (Notes 1, 4) S2 1.2 -40 to +85 6 Ld TDFN L6.1.6x1.6 ISL9021IRUYZ-T (Notes 1, 4) R9 0.9 -40 to +85 6 Ld TDFN L6.1.6x1.6 NOTES: 1. Please refer to TB347 for details on reel specifications. 2. For other output voltages, contact Intersil Marketing. 3. These Intersil Pb-free WLCSP and BGA packaged products employ special Pb-free material sets molding compounds/die attach materials and SnAgCu - e1 solder ball terminals, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free WLCSP and BGA packaged 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. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and NiPdAu plate - e4 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. FN6867 Rev 2.00 Page 2 of 10 January 14, 2010