Datasheet ISL97634 (Intersil) - 4

link to page 4 link to page 4 link to page 4 link to page 4 ISL97634 Absolute Maximum Ratings (TA = +25°C) Thermal Information Input Voltage (VIN) . -0.3V to 6V Thermal Resistance JA (°C/W) JC (°C/W) LX Voltage . -0.3V to 28V 8 Ld TDFN Package (Notes 4, 5). 77 12 FBSW Voltage . -0.3V to 28V Maximum Junction Temperature . .+125°C All Other Pins . -0.3V to 6V Storage Temperature . .-65°C to +150°C Pb-Free Reflow Profile . see link below Operating Conditions http://www.intersil.com/pbfree/Pb-FreeReflow.asp Temperature Range . -40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed over temperature of -40°C to +85°C unless otherwise stated. Typ values are for information purposes only at TJ = TC = TA = +25°C. NOTES: 4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside. Electrical Specifications VIN = VPWM/EN = 3V. Boldface limits apply over the operating temperature range, -40°C to +85°C. MIN MAX PARAMETER DESCRIPTION CONDITION (Note 6) TYP (Note 6) UNIT VIN Supply Voltage 2.4 5.5 V IIN Supply Current PWM/EN = 3V, enabled, not switching 0.8 1.5 mA PWM/EN = 0V, disabled 1 µA fSW Switching Frequency 1,300 1,450 1,600 kHz DMAX Maximum Switching Duty Cycle 90 95 % ILIM LX Current 400 470 mA RSW(LX) LX Switch ON-Resistance ILX = 100mA 900 mΩ ILEAK LX Switch Leakage Current VLX = 28V 0.01 1 µA VFB Feedback Voltage 90 95 100 mV IFB FB Pin Bias Current VFB = 95mV 1 µA RSW(FBSW) FBSW Switch ON-Resistance 10 Ω VDIODE Schottky Diode Forward Voltage IDIODE = 100mA, TA = +25°C 600 850 mV OVP Overvoltage Protection ISL97634IRT14Z 14 V ISL97634IRT18Z 18 V ISL97634IRT26Z 26 28 V VIL Logic Low Voltage of PWM/EN 0.6 V VIH Logic High Voltage of PWM/EN 1.5 V PWM_on Minimum PWM On-Time 1.5 µs EN_delay EN to Vout Delay 200 µs NOTE: 6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. FN6264 Rev 4.00 Page 4 of 12 August 27, 2013