NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PART ISL97519A DATASHEET ISL97516 FN9261 Rev 6.00 600kHz/1.2MHz PWM Step-Up Regulator March 28, 2014 The ISL97516 is a high frequency, high efficiency step-up Features voltage regulator operated at constant frequency PWM mode. >90% Efficiency With a 2.0A typical switch current limit and 200m MOSFET, it can deliver over 90% efficiency. The selectable 600kHz and 2.0A, 200m Power MOSFET 1.2MHz allows smaller inductors and faster transient 2.3V to 5.5V Input response. An external compensation pin gives the user greater 1.1*VIN to 25V Output flexibility in setting frequency compensation allowing for the use of low ESR Ceramic output capacitors. 600kHz/1.2MHz Switching Frequency Selection When shut down, it draws <1A of current and can operate Adjustable Soft-Start down to 2.3V input supply. These features along with 1.2MHz Internal Thermal Protection switching frequency make it an ideal device for portable 1.1mm Max Height 8 Ld MSOP Package equipment and TFT-LCD displays. Pb-free (RoHS compliant) The ISL97516 is available in an 8 Ld MSOP package with a maximum height of 1.1mm. The device is specified for Applications operation over the full -40C to +85C temperature range. TFT-LCD displays DSL modems PCMCIA cards Digital cameras GSM/CDMA phones Portable equipment Handheld devices FSEL EN SS SHUTDOWN REFERENCE AND START-UP VDD OSCILLATOR GENERATOR CONTROL LX PWM LOGIC FET CONTROLLER DRIVER COMPARATOR CURRENT GND SENSE FB GM AMPLIFIER COMP FIGURE 1. BLOCK DIAGRAM FN9261 Rev 6.00 Page 1 of 9 March 28, 2014ISL97516 Pin Configuration ISL97516 (8 LD MSOP) TOP VIEW COMP 1 8 SS FB 2 7 FSEL EN 3 6 VDD GND 4 5 LX Pin Descriptions PIN NUMBER PIN NAME DESCRIPTION 1 COMP Compensation pin. Output of the internal error amplifier. Capacitor and resistor from COMP pin to ground. 2 FB Voltage feedback pin. Internal reference is 1.294V nominal. Connect a resistor divider from V . OUT V = 1.294V (1 + R /R ). See Typical Application Circuit on page 2. OUT 1 2 3EN Shutdown control pin. Pull EN low to turn off the device. 4 GND Analog and power ground. 5 LX Power switch pin. Connected to the drain of the internal power MOSFET. 6 VDD Analog power supply input pin. 7 FSEL Frequency select pin. When FSEL is set low, switching frequency is set to 620kHz. When connected to high or V , switching frequency is set to 1.25MHz. DD 8 SS Soft-start control pin. Connect a capacitor to control the converter start-up. Typical Application Circuit 1 COMP SS 8 R C 3 3 3.9k R 85.2k 1 27nF 2 FB FSEL 7 C R 5 2 4.7nF 10k 3 EN VDD 6 2.3V TO 5.5V C + C 4 1 22F 10H 0.1F 4 GND LX 5 12V S1 + C 2 D 1 22F Ordering Information PART NUMBER PART PACKAGE PKG. (Notes 2, 3) MARKING (Pb-free) DWG. ISL97516IUZ 7516Z 8 Ld MSOP M8.118A ISL97516IUZ-T (Note 1) 7516Z 8 Ld MSOP M8.118A ISL97516IUZ-TK (Note 1) 7516Z 8 Ld MSOP M8.118A NOTES: 1. Please 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), please see device information page for ISL97516. For more information on MSL please see techbrief TB363. FN9261 Rev 6.00 Page 2 of 9 March 28, 2014