Datasheet LTC3824 (Analog Devices) - 4

LTC3824
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = 12V, RSET = 392k, CCAP = 0.1µF. No load on any outputs, unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Gate Driver
GATE Bias Voltage (VCC–VCAP) 9V ≤ VCC ≤ 60V, IGATE = 10mA: LTC3824E/LTC3824I l 7.0 7.9 8.8 V LTC3824MP/LTC3824H l 6.8 7.9 8.9 V VCC = 12V, IGATE = 15mA l 6.8 V GATE Bias Voltage (VCAP–GND) 4V ≤ VCC ≤ 8V, IGATE = 10mA 0.2 0.85 1.5 V 6V ≤ VCC ≤ 8V, IGATE = 15mA l 2.8 V GATE High Voltage (VCC–VGATE) 4V ≤ VCC ≤ 60V, IGATE = –15mA 0.5 0.8 V GATE Peak Source Current CGATE = 10nF 2.5 A GATE Low Voltage (VGATE–VCAP) 8V ≤ VCC ≤ 60V, IGATE = 15mA 0.1 0.5 V 4V ≤ VCC < 8V, IGATE = 10mA 0.05 V GATE Peak Sink Current CGATE = 10nF 2.5 A
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings layout, the rated package thermal impedance and other environmental may cause permanent damage to the device. Exposure to any Absolute factors. The junction temperature (TJ, in °C) is calculated from the ambient Maximum Rating condition for extended periods may affect device temperature (TA, in °C) and power dissipation (PD, in Watts) according to reliability and lifetime. the formula:
Note 2:
The LTC3824 is tested under pulsed load conditions such that TJ = TA + (PD • θJA) TJ ≈ TA. The LTC3824E is guaranteed to meet performance specifications where θJA (in °C/W) is the package junction to ambient thermal from 0°C to 85°C operating junction temperature. Specifications over impedance. the –40°C to 125°C operating junction temperature range are assured by
Note 3:
This parameter is tested in a feedback loop that servos V design characterization and correlation with statistical process controls. FB to the reference voltage with the V The LTC3824I is guaranteed over the –40°C to 125°C operating junction C pin forced to 1V. temperature range. The LTC3824H is guaranteed over the –40°C to 150°C
Note 4:
This specification represents the maximum voltage on VC where operating junction temperature range. The LTC3824MP is guaranteed switching (GATE pin) is guaranteed to be off. The nominal value of VC and tested over the full –55°C to 150°C operating junction temperature where switching turns off is 0.7V. range. High junction temperatures degrade operating lifetimes; operating
Note 5:
The LTC3824 typically enters Burst Mode operation when the load lifetime is derated for junction temperatures greater than 125°C. Note that is less than one third the current limit. If minimum on-time is violated, the maximum ambient temperature consistent with these specifications cycle skipping may occur at higher current levels. is determined by specific operating conditions in conjunction with board 3824fh 4 For more information www.linear.com/LTC3824 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Applications Information Typical Application Related Parts