LT3964 ELECTRICALCHARACTERISTICS The l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VIN1 = 12V, VEN/UVLO = 5V, CTRL1 = CTRL2 = 2V, PWM1 = PWM2 = 2Vunless otherwise noted.PARAMETERCONDITIONSMINTYPMAXUNITSI2C Port (Note 6) I2C Address XXXX Bits Are Programmed by ADDR[1:2] l 110XXXX[R/W] VIHA High Level Input Voltage for Address Pins ADDR1, ADDR2 l INTVCC – 0.8 V VILA Low Level Input Voltage for Address Pins ADDR1, ADDR2 l 0.6 V RINH Resistance from ADDR1, ADDR2 to INTVCC to Set Chip l 10 kΩ Address Bit to 1 RINL Resistance from ADDR1, ADDR2 to GND to Set Chip l 10 kΩ Address Bit to 0 RINF Resistance from ADDR1, ADDR2 to GND or INTVCC to l 1 MΩ Set Chip Address Bit to Float SDA and SCL Input High Voltage l 1.5 V SDA and SCL Input Low Voltage l 0.4 V SDA and SCL Input High Current SDA, SCL = 3.3V 50 nA SDA and SCL Input Low Current Current Out of Pin, SDA, SCL = 0V 50 nA SDA Output Low Voltage ISDA = 3mA 0.4 V Clock Operating Frequency 400 kHz Bus Free Time Between Stop and Start 1.3 µs Condition (tBUF) Hold Time After Repeated Start 0.6 µs Condition (tHD,SDA) Repeated Start Condition Set-Up 0.6 µs Time (tSU,STA) Stop Condition Set-Up Time (tSU,STO) 0.6 µs Data Hold Time Output (tHD,DAT(O)) 0 900 ns Data Hold Time Input (tHD,DAT(I)) 0 ns Data Set-Up Time (tSU,DAT) 250 ns SCL Clock Low Period (tLOW) 1.3 µs SCL Clock High Period (tHIGH) 0.6 µs Data Fall Time CB = Capacitance of One Bus Line (pF) 20 + 0.1CB 300 ns Data Rise Time CB = Capacitance of One Bus Line (pF) 20 + 0.1CB 300 ns Input Spike Suppress Pulse Width (tSP) 50 ns Note 1: Stresses beyond those listed under Absolute Maximum Ratings correlation with statistical process controls. The LT3964I is guaranteed may cause permanent damage to the device. Exposure to any Absolute to meet performance specifications over the –40°C to 125°C operating Maximum Rating condition for extended periods may affect device temperature range. The LT3964H is guaranteed over the full –40°C to reliability and lifetime. 150°C operating junction temperature range. High junction temperatures Note 2: Do not apply a positive or negative voltage source to the PWMTG degrade operating lifetimes. Operating lifetime is derated at junction pin or RT pin, otherwise permanent damage may occur. temperatures greater than 125°C. Note 3: Do not apply a positive or negative voltage source to INTV Note 5: The LT3964 includes overtemperature protection that is intended CC pin, otherwise permanent damage may occur. I to protect the device during momentary overload conditions. Junction INTVCC = 5mA is the maximum external load that can be applied. The internal load will be higher due to the temperature will exceed the maximum operating junction temperature power consumption of the IC. when overtemperature is active. Continuous operating above the specified Note 4: The LT3964E is guaranteed to meet specified performance maximum operating junction temperature may impair device reliability. from 0°C to 125°C. Specifications over the –40°C to 125°C operating Note 6: All I2C serial port timing information is shown in Figure 15. temperature range are assured by design, characterization and 3964fb For more information www.linear.com/LT3964 5
