Datasheet LT1511 (Analog Devices) - 5

LT1511
W U TYPICAL PERFORMANCE CHARACTERISTICS Switching Frequency vs Temperature I V CC vs VCC REF Line Regulation
210 7.0 0.003 MAXIMUM DUTY CYCLE 205 0.002 6.5 0°C 200 25°C 0.001 6.0 ALL TEMPERATURES 125°C (V) 195 (mA) 0 REF I CC 5.5 ∆V FREQUENCY (kHz) 190 –0.001 5.0 185 –0.002 180 4.5 –0.003 –20 0 20 40 60 80 100 120 140 0 5 10 15 20 25 30 0 5 10 15 20 25 30 TEMPERATURE (°C) VCC (V) VCC (V) 1511 • TPC04 1511 • TPC05 1511 • TPC06
I Maximum Duty Cycle V VA vs
∆
VOVP (Voltage Amplifier) C Pin Characteristics
4 98 –1.20 –1.08 97 –0.96 3 96 –0.84 95 –0.72 (mV) –0.60 2 94 (mA) OVP –0.48 ∆V 125°C I VC 93 DUTY CYCLE (%) –0.36 1 92 –0.24 –0.12 25°C 91 0 0 90 0.12 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 20 40 60 80 100 120 140 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 IVA (mA) TEMPERATURE (°C) VC (V) 1511• TPC07 1511 • TPC08 1511 • TPC09
Switch Current vs Boost Current Reference Voltage PROG Pin Characteristics vs Boost Voltage vs Temperature
6 50 2.470 45 VCC = 16V 2.468 40 VBOOST = 38V 28V 125°C 35 18V 2.466 30 (mA) 0 25°C 25 2.464 I PROG 20 2.462 BOOST CURRENT (mA) 15 REFERENCE VOLTAGE (V) 10 2.460 5 – 6 0 2.458 0 1 2 3 4 5 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 25 50 75 100 125 150 V SWITCH CURRENT (A) TEMPERATURE PROG (V) 1511 • TPC10 1511 • TPC11 LT1511 • TPC12 5