Datasheet LT8550 (Analog Devices) - 7

LT8550
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. VIN Quiescent Current vs SHDN Pin Threshold VIN UVLO Threshold VIN Voltage, Not Switching
1.30 3.5 5.6 T = 130°C 5.5 3.4 1.25 RISING 5.4 3.3 5.3 1.20 RISING 5.2 T = 25°C 3.2 FALLING 5.1 FALLING 1.15 SHDN PIN THRESHOLD (V) VIN UVLO THRESHOLD (V) QUIESCENT CURRENT (mA) 5.0 3.1 V IN T = –50°C 4.9 1.10 3.0 4.8 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 5 15 25 35 45 55 65 75 85 TEMPERATURE (°C) TEMPERATURE (°C) VIN VOLTAGE (V) 8550 G10 8550 G11 8550 G12
VIN Quiescent Current vs IAMPP-IAMPN Voltage vs Temperature, Not Switching SHDN Pin Current vs Voltage (ISP-ISN) Voltage
5.7 30 2.6 T = 25°C 2.3 25 5.5 2.0 20 5.3 TAGE (V) 1.7 15 1.4 5.1 PIN CURRENT (µA) 1.1 10 QUIESENCT CURRENT (mA) SHDN 0.8 4.9 IAMPP–IAMPN VOL V IN VIN = 6V 5 T = 150°C ILIM = FLOAT VIN = 12V T = 25°C 0.5 ILIM = REG VIN = 80V T = –50°C ILIM = GND 4.7 0 0.2 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 70 –90 –60 –30 0 30 60 90 TEMPERATURE (°C) SHDN PIN VOLTAGE (V) ISP–ISN VOLTAGE (mV) 8550 G13 8550 G14 8550 G15
Maximum Positive Current Limit Maximum Negative Current Limit vs Temperature vs Temperature PHS1 Pin Current
100 –20 180 ILIM = FLOAT ILIM = GND 90 –30 T = 25°C 120 80 –40 60 70 –50 ILIM = REG ILIM = REG 60 –60 0 TIVE CURRENT LIMIT (mV) 50 –70 –60 40 –80 PHS1 PIN CURRENT (µA) ILIM = GND ILIM = FLOAT –120 30 –90 MAXIMUM POSITIVE CURRENT LIMIT (mV) MAXIMUM NEGA 20 –100 –180 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 TEMPERATURE (°C) TEMPERATURE (°C) PHS1 PIN VOLTAGE (V) 8550 G16 8550 G17 8550 G18 Rev. 0 For more information www.analog.com 7