DATASHEET ISL9103, ISL9103A FN6828 Rev 3.00 500mA 2.4MHz Low IQ High Efficiency Synchronous Buck Converter December 9, 2015 The ISL9103, ISL9103A is a 500mA, 2.4MHz step-down Features regulator, which is ideal for powering low-voltage High Efficiency Integrated Synchronous Buck Regulator microprocessors in compact devices such as PDAs and with up to 95% Efficiency cellular phones. It is optimized for generating low output 2.7V to 6.0V Supply Voltage voltages down to 0.8V. The supply voltage range is from 2.7V to 6V allowing the use of a single Li+ cell, three NiMH 2.4MHz PWM Switching Frequency cells or a regulated 5V input. It has guaranteed minimum 500mA Guaranteed Output Current output current of 500mA. A high switching frequency of 2.4MHz pulse-width modulation (PWM) allows using small 3% Output Accuracy Over-Temperature and Line for Fixed external components. Under light load condition, the device Output Options operates at low I skip mode with typical 20A quiescent Q 20A Quiescent Supply Current in Skip Mode current for highest light load efficiency to maximize battery Less than 1A Logic Controlled Shutdown Current life, and it automatically switches to fixed frequency PWM mode under heavy load condition. 100% Maximum Duty Cycle for Lowest Dropout The ISL9103, ISL9103A includes a pair of low Ultrasonic Switching Frequency at Skip Mode to Prevent ON-resistance P-Channel and N-Channel internal MOSFETs Audible Frequency Noise (For ISL9103A Only) to maximize system efficiency and minimize the external Discharge Output Capacitor when Disabled component count. 100% duty-cycle operation allows less than 300mV dropout voltage at 500mA. Internal Digital Soft-Start Peak Current Limiting, Short Circuit Protection The ISL9103, ISL9103A offers internal digital soft-start, enable for power sequence, overcurrent protection and Over-Temperature Protection thermal shutdown functions. In addition, the ISL9103, Chip Enable ISL9103A offers a quick bleeding function that discharges the output capacitor when the IC is disabled. Small 6 Pin 1.6mmx1.6mm UTDFN Package The ISL9103, ISL9103A is offered in a 1.6x1.6mm UTDFN Pb-Free (RoHS Compliant) package. The complete converter occupies less than 2 Applications 0.5cm . Single Li-ion Battery-Powered Equipment Pinout Mobile Phones and MP3 Players ISL9103, ISL9103A (6 LD 1.6x1.6 UTDFN) PDAs and Palmtops TOP VIEW WCDMA Handsets VIN 1 6 SW Portable Instruments EN 2 5 GND NC 3 4 FB FN6828 Rev 3.00 Page 1 of 14 December 9, 2015ISL9103, ISL9103A Pin Descriptions PIN NUMBER PIN NAME DESCRIPTION 1VIN Input supply voltage. Typically connect a 10F ceramic capacitor to ground. 2EN Regulator enable pin. Enable the device when driven to high. Shut down the chip and discharge output capacitor when driven to low. Do not leave this pin floating. 3NC No connect leave floating. 4FB Buck converter output feedback pin. For adjustable output version, its typical value is 0.8V and connect it to the output through a resistor divider for desired output voltage for fixed output version, directly connect this pin to the converter output. 5GND Ground connection. 6SW Switching node connection. Connect to one terminal of inductor. Ordering Information OUTPUT TEMP PACKAGE PART NUMBER PART VOLTAGE (V) RANGE Tape and Reel PKG ULTRASONIC (Notes 1, 3, 4) MARKING (Note 2) (C) (RoHS Compliant) DWG. FUNCTION ISL9103IRUJZ-T J1 2.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement:ISL9103AIRUJZ-T) ISL9103IRUFZ-T J2 2.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUFZ-T) ISL9103IRUDZ-T J3 2.0 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUDZ-T) ISL9103IRUCZ-T J4 1.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUCZ-T) ISL9103IRUBZ-T J5 1.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUBZ-T) ISL9103IRUWZ-T J6 1.2 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUWZ-T) ISL9103IRUAZ-T J7 ADJ -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO (No longer available, recommended replacement: ISL9103AIRUAZ-T) ISL9103AIRUJZ-T J9 2.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUFZ-T K0 2.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUDZ-T K1 2.0 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUCZ-T K2 1.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUBZ-T K3 1.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUWZ-T K4 1.2 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES ISL9103AIRUAZ-T K5 ADJ -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES NOTES: 1. Please refer to TB347 for details on reel specifications. 2. Other output voltage options may be available upon request, please contact Intersil for more details. 3. 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. 4. For Moisture Sensitivity Level (MSL), please see device information page for ISL9103, ISL9103A. For more information on MSL please see techbrief TB363. FN6828 Rev 3.00 Page 2 of 14 December 9, 2015