Datasheet LT1683 (Analog Devices) - 4

LT1683
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings from 0°C to 70°C. Specifications over the –40°C to 125°C operating range may cause permanent damage to the device. Exposure to any Absolute are assured by design, characterization and correlation with statistical Maximum Rating condition for extended periods may affect device process controls. The LT1683I is guaranteed and tested over the –40° to reliability and lifetime. 125° operating temperature range.
Note 2:
Supply current specification includes loads on each gate as in
Note 4:
Output gate drivers will be enabled at this voltage. The GCL voltage Figure 1a. Actual supply currents vary with operating frequency, operating will also determine drivers’ activity. voltages, V5 load, slew rates and type of external FET.
Note 5:
Gate drivers are ensured to be on when VIN is greater than the
Note 3:
The LT1683E is guaranteed to meet performance specifications maximum value.
TYPICAL PERFORMANCE CHARACTERISTICS Feedback Voltage and Input Negative Feedback Voltage and Current vs Temperature Input Current vs Temperature
1.260 750 2.480 3.2 1.258 700 2.485 3.0 1.256 650 FB INPUT CURRENT (nA) NFB INPUT CURRENT (µA) 2.490 2.8 1.254 600 1.252 550 2.495 2.6 1.250 500 2.500 2.4 1.248 450 2.505 2.2 1.246 400 FEEDBACK VOLTAGE (V) 2.510 2.0 1.244 350 NEGATIVE FEEDBACK VOLTAGE (V) 1.242 300 2.515 1.8 1.240 250 2.520 1.6 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 1683 G01 1683 G02
Feedback Overvoltage Shutdown Error Amp Transconductance Error Amp Output Current vs vs Temperature vs Temperature Feedback Pin Voltage from Nominal
1.70 2000 500 1.65 1900 400 –40°C 1.60 1800 300 1.55 1700 200 25°C 1.50 1600 100 125°C 1.45 1500 0 1.40 1400 –100 CURRENT (µA) 1.35 1300 –200 FEEDBACK VOLTAGE (V) 1.30 TRANSCONDUCTANCE (µmho) 1200 –300 1.25 1100 –400 1.20 1000 –500 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –400 –300 –200 –100 0 100 200 300 400 TEMPERATURE (°C) TEMPERATURE (°C) FEEDBACK PIN VOLTAGE FROM NOMINAL (mV) 1683 G03 1683 G04 1683 G05 1683fd 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Test Circuits Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts