DATASHEET ISL9106 FN6509 Rev 0.00 1.2A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator June 29, 2007 ISL9106 is a 1.2A, 1.6MHz step-down regulator, which is Features ideal for powering low-voltage microprocessors in compact High Efficiency Integrated Synchronous Buck Regulator devices such as PDAs and cellular phones. It is optimized with up to 95% Efficiency for generating low output voltages down to 0.8V. The supply voltage range is from 2.7V to 5.5V allowing the use of a 2.7V to 5.5V Supply Voltage single Li+ cell, three NiMH cells or a regulated 5V input. 17 A Quiescent Supply Current in Skip (Low I ) Mode Q 1.6MHz pulse-width modulation (PWM) switching frequency allows using small external components. It has flexible 1.2A Guaranteed Output Current operation mode selection of forced PWM mode and Skip 3% Output Accuracy Over Temperature/Load/Line (Low I ) mode with typical 17 A quiescent current for Q highest light load efficiency to maximize battery life. Selectable Forced PWM Mode and Skip Mode The ISL9106 integrates a pair of low ON-resistance Less than 1A Logic Controlled Shutdown Current P-Channel and N-Channel MOSFETs to maximize efficiency 100% Maximum Duty Cycle for Lowest Dropout and minimize external component count. Discharge Output Cap when Shutdown The ISL9106 offers a typical 215ms Power-Good (PG) timer when powered up. The timer output can be reset by RSI. Internal Digital Soft-Start When shutdown, ISL9106 discharges the output capacitor. Peak Current Limiting, Short Circuit Protection Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal Over-Temperature Protection shutdown. Enable, Power Good Function The ISL9106 is offered in 10 Ld 3mmx3mm DFN package 10 Ld 3mmx3mm DFN with 0.9mm typical height. The complete converter can 2 occupy less than 1cm area. Pb-Free Plus Anneal Available (RoHS Compliant) Ordering Information Applications PART TEMP. Single Li-Ion Battery-Powered Equipment NUMBER PART RANGE PACKAGE PKG. DSP Core Power (Note) MARKING (C) (Pb-free) DWG. PDAs and Palmtops ISL9106IRZ 106Z -40 to +85 10 Ld 3x3 DFN L10.3x3C ISL9106IRZ-T 106Z -40 to +85 10 Ld 3x3 DFN L10.3x3C Pinout NOTE: Intersil Pb-free plus anneal products employ special Pb-free ISL9106 material sets molding compounds/die attach materials and 100% (10 LD 3X3 DFN) matte tin plate termination finish, which are RoHS compliant and TOP VIEW 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 1 10 SW VIN IPC/JEDEC J STD-020. NC 2 9 PGND EN SGND 3 8 PG 4 7 FB MODE 5 6 RSI FN6509 Rev 0.00 Page 1 of 13 June 29, 2007ISL9106 Absolute Maximum Ratings (Reference to SGND) Thermal Information VIN -0.3V to 6.5V Thermal Resistance (Notes 1, 2) (C/W) (C/W) JA JC EN, RSI, MODE, PG . -0.3V to VIN + 0.3V 3x3 DFN Package 44 5.5 SW -1.5V to 6.5V Junction Temperature Range -40C to +125C FB -0.3V to 2.7V Storage Temperature Range -65C to +150C PGND -0.3V to 0.3V Pb-free reflow profile see link below