Datasheet LT3045 (Analog Devices) - 9

LT3045
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. ISET During Start-Up with Fast PG Output Low Voltage PG Pin Leakage Current Start-Up Enabled
50 100 3.0 VIN = 2V V V 45 PG = 2V 90 IN = 2.5V VPGFB = 290mV VPGFB = 310mV VPGFB = 290mV 2.5 40 IPG = 100µA 80 VSET = 1.3V 35 70 2.0 30 60 (mV) 25 (nA) 50 (mA) 1.5 V PG I PG 20 40 I SET 1.0 15 30 10 20 0.5 5 10 0 0 0 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3045 G34 3045 G35 3045 G36
ISET During Start-Up with Fast Output Overshoot Recovery Output Overshoot Recovery Start-Up Enabled Current Sink Current Sink
3.5 12 7 V V PGFB = 290mV IN = 5V 150°C VIN = 5V 3.0 V R SET = 1.3V SET = 33.2k 125°C R 10 6 SET = 33.2k 25°C VOUT – VSET > 5mV –55°C 2.5 5 8 2.0 4 (mA) 6 I SET 1.5 3 4 1.0 2 OUTPUT SINK CURRENT (mA) OUTPUT SINK CURRENT (mA) 0.5 2 1 0 0 0 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 –75 –50 –25 0 25 50 75 100 125 150 VIN-TO-VSET DIFFERENTIAL (V) VOUT – VSET (mV) TEMPERATURE (°C) 3045 G37 3045 G38 3045 G39
VOUT Forced Above VOUT(NOMINAL) Power Supply Ripple Rejection Power Supply Ripple Rejection
8 120 120 VIN = 5V IIN when VEN = 0V C C R SET = 4.7µF OUT = 10µF SET = 33.2k IOUT when VEN = 0V 110 C 110 COUT = 22µF I SET = 0.47µF IN when VEN = VIN I 100 100 6 OUT when VEN = VIN 90 90 80 80 4 70 70 PSRR (dB) 60 PSRR (dB) 60 CURRENT (mA) 50 50 2 VIN = 5V 40 VIN = 5V R 40 SET = 30.1k RSET = 30.1k COUT = 10µF 30 30 CSET = 0.47µF IL = 500mA I 0 L = 500mA 20 20 4 5 6 7 8 9 10 11 12 13 14 15 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M OUTPUT VOLTAGE (V) FREQUENCY (Hz) FREQUENCY (Hz) 3045 G40 3045 G41 3045 G42 Rev. B For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts