Datasheet LTC3636, LTC3636-1 (Analog Devices) - 4

link to page 2 link to page 18 LTC3636/LTC3636-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TJ = 25°C (Note 2). VIN1 = VIN2 = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
RPGOOD PGOOD Pull-Down Resistance 10mA Load 25 Ω tPGOOD Power Good Filter Time 20 40 µs tSS Internal Soft-Start Time 10% to 90% Rise Time 1000 1500 µs VFB During Tracking TRACKSS = 0.3V 0.28 0.3 0.315 V ITRACKSS TRACKSS Pull-Up Current 1.4 µA VMODE/SYNC MODE/SYNC Threshold Voltage MODE VIH 1 V MODE VIL 0.4 V SYNC Threshold Voltage SYNC VIH 0.95 V IMODE MODE/SYNC Input Current MODE = 0V 1.5 µA MODE = INTVCC –1.5 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings (TJ, in °C) is calculated from the ambient temperature (TA, in °C) and may cause permanent damage to the device. Exposure to any Absolute power dissipation (PD, in Watts) according to the formula: Maximum Rating condition for extended periods may affect device TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal reliability and lifetime. impedance.
Note 2:
The LTC3636 is tested under pulsed load conditions such
Note 3:
This IC includes overtemperature protection that is intended that TJ ≈ TA. The LTC3636E is guaranteed to meet specifications from to protect the device during momentary overload conditions. Junction 0°C to 125°C junction temperature. Specifications over the –40°C to temperature will exceed 125°C when overtemperature protection is active. 125°C operating junction temperature range are assured by design, Continuous operation above the specified maximum operating junction characterization and correlation with statistical process controls. The temperature may impair device reliability. LTC3636I is guaranteed over the –40°C to 125°C operating junction
Note 4:
Output voltages outside the specified range are not optimized for temperature range. Note that the maximum ambient temperature controlled on-time operation. Refer to the Applications Information section consistent with these specifications is determined by specific operating for further discussions related to the output voltage range. conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. The junction temperature
Note 5:
Dynamic supply current is higher due to the internal gate charge being delivered at the switching frequency.
Note 6:
Guaranteed by design. Rev. C 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts