Datasheet LT8302, LT8302-3 (Analog Devices) - 4

LT8302/LT8302-3
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switching Frequency Output Load and Line Regulation Output Temperature Variation vs Load Current
5.20 5.3 500 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 5.15 VIN = 12V 5.2 IOUT = 1A 400 5.10 5.1 5.05 RTC = 115k 300 5.00 5.0 RTC = OPEN 200 4.95 4.9 FREQUENCY (kHz) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 4.90 VIN = 5V 4.8 100 VIN = 5V 4.85 VIN = 12V VIN = 12V VIN = 24V VIN = 24V 4.80 4.7 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 150 0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 8302 G01 8302 G02 8302 G03
Boundary Mode Waveforms Discontinuous Mode Waveforms Burst Mode Waveforms
VSW V 20V/DIV SW 20V/DIV VSW 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV 2µs/DIV 8302 G04 2µs/DIV 8302 G05 20µs/DIV 8302 G06 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V IOUT = 2A IOUT = 0.5A IOUT = 10mA
VIN Quiescent Current, VIN Quiescent Current, VIN Shutdown Current Sleep Mode Active Mode
10 140 420 TJ = 150°C TJ = 25°C T 130 TJ = 150°C J = 150°C 8 TJ = –55°C 400 120 TJ = 25°C 6 380 TJ = 25°C (µA) (µA) 110 (µA) TJ = –55°C I Q I Q I Q 4 360 100 TJ = –55°C 2 340 90 0 80 320 0 10 20 30 40 50 0 10 20 30 40 50 0 10 20 30 40 50 VIN (V) VIN (V) VIN (V) 8302 G07 8302 G08 8302 G09 Rev. G 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts