Datasheet MAX1771 (Maxim) - 4

MAX1771
12V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controller Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE SUPPLY CURRENT vs. SUPPLY VOLTAGE EXT RISE/FALL TIME vs. SUPPLY VOLTAGE
4 0.8 250 VOUT = 12V, VIN = 5V CIRCUIT OF FIGURE 2a VOUT = 12V MAX1771-04 BOOTSTRAPPED MODE MAX1771-05 MAX1771-06 200 3 0.6 BOOTSTRAPPED CEXT = 2200pF ENTIRE CIRCUIT OF CEXT = 1000pF CIRCUIT FIGURE 2a 150 CEXT = 446pF 2 0.4 CEXT = 100pF 100 SCHOTTKY DIODE SUPPLY CURRENT (mA) 1 LEAKAGE EXCLUDED SUPPLY CURRENT (mA) 0.2 EXT RISE/FALL TIME (ns) 50 NON-BOOTSTRAPPED CIRCUIT OF FIGURE 2b 0 0 0 -75 -50 -25 0 25 50 75 100 125 2 4 6 8 10 12 2 4 6 8 10 12 TEMPERATURE (°C) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V)
REFERENCE OUTPUT RESISTANCE vs. MAXIMUM SWITCH ON-TIME vs. TEMPERATURE REFERENCE vs. TEMPERATURE TEMPERATURE
250 1.506 16.5 ) Ω 1.504 MAX1771-07 MAX1771-08 MAX1771-09 200 10µA 1.502 150 1.500 16.0 1.498 100 t ON(MAX) (µs) 50µA REFERENCE (V) 1.496 100µA 50 1.494 REFERENCE OUTPUT RESISTANCE ( 0 1.492 15.5 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C)
MAXIMUM SWITCH ON-TIME/ MINIMUM SWITCH OFF-TIME vs. MINIMUM SWITCH OFF-TIME RATIO SHUTDOWN CURRENT vs. TEMPERATURE TEMPERATURE vs. TEMPERATURE
4.0 2.30 8.0 3.5 MAX1771-10 MAX1771-11 MAX1771-12 3.0 7.5 2.5 2.0 2.25 7.0 V+ = 15V t OFF(MIN) RATIO 1.5 t OFF(MIN) (µs) V+ = 8V 1.0 6.5 SHUTDOWN CURRENT (µA) t ON(MAX)/ 0.5 V+ = 4V 0 2.20 6.0 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -30 0 30 60 90 120 150 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 4 Maxim Integrated