Datasheet LTC3803-5 (Analog Devices) - 4

LTC3803-5
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings Junction temperature (TJ) is calculated from the ambient temperature TA may cause permanent damage to the device. Exposure to any Absolute and the power dissipation PD in the LTC3803-5 using the formula: Maximum Rating condition for extended periods may affect device TJ = TA + (PD • 230°C/W) reliability and lifetime.
Note 3:
High junction temperatures degrade operating lifetimes; operating
Note 2:
The LTC3803-5 is tested under pulsed load conditions such lifetime is derated for junction temperatures greater than 125°C. that TJ ≈ TA. The LTC3803E-5 is guaranteed to meet specifi cations
Note 4:
Dynamic supply current is higher due to the gate charge being from 0°C to 85°C junction temperature. Specifi cations over the –40°C delivered at the switching frequency. to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The
Note 5:
The LTC3803-5 is tested in a feedback loop that servos VFB to the LTC3803I-5 is guaranteed over the –40°C to 125°C operating junction output of the error amplifi er while maintaining ITH/RUN at the midpoint of temperature range, the LTC3803H-5 is guaranteed over the –40°C to the current limit range. 150°C operating junction temperature range and the LTC3803MP-5 is
Note 6:
Peak current sense voltage is reduced dependent on duty cycle tested and guaranteed over the full –55°C to 150°C operating junction and an optional external resistor in series with the SENSE pin (RSL). For temperature range. Note that the maximum ambient temperature details, refer to the programmable slope compensation feature in the consistent with these specifi cations is determined by specifi c operating Applications Information section. conditions in conjunction with board layout, the rated package thermal
Note 7:
Guaranteed by design. impedance and other environmental factors.
TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage Reference Voltage Reference Voltage vs Temperature vs Supply Voltage vs VCC Shunt Regulator Current
820 812 812 VCC = 5V TA = 25°C TA = 25°C 815 VCC ≤ VCLAMP1mA 808 808 810 804 804 805 800 800 800 VOLTAGE (mV) 795 VOLTAGE (mV) VOLTAGE (mV) FB FB 796 FB V V V 796 790 792 792 785 780 788 788 –60 –30 0 30 60 90 120 150 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 0 5 10 15 20 25 TEMPERATURE (°C) VCC SUPPLY VOLTAGE (V) ICC (mA) 38035 G01 38035 G02 38035 G03
Oscillator Frequency Oscillator Frequency Oscillator Frequency vs Temperature vs Supply Voltage vs VCC Shunt Regulator Current
240 220 220 VCC = 5V TA = 25°C TA = 25°C 215 215 230 210 210 220 205 205 210 200 200 195 195 200 190 190 OSCILLATOR FREQUENCY (kHz) 190 OSCILLATOR FREQUENCY (kHz) OSCILLATOR FREQUENCY (kHz) 185 185 180 180 180 –60 –30 0 30 60 90 120 150 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 0 5 10 15 20 25 TEMPERATURE (°C) VCC SUPPLY VOLTAGE (V) ICC (mA) 38035 G04 38035 G05 38035 G06 38035fd 4 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS