Datasheet LTC3672B-1 (Analog Devices) - 4

LTC3672B-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise specifi ed. VIN Quiescent Current vs VIN1 Quiescent Current vs VIN1 Quiescent Current vs VIN Voltage VIN1 Voltage Temperature
500 3.0 SW PIN NOT SWITCHING 5 VIN = VIN1 VIN = 2.8V TO 5.5V VIN1 = 1.8V 2.5 400 130°C 4 90°C 90°C 2.0 300 25°C 3 130°C (μA) (μA) (μA) 1.5 I VIN 200 I VIN1 I VIN1 –45°C 2 –45°C 1.0 25°C 100 1 0.5 0 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –25 0 25 50 75 100 125 150 VIN (V) VIN1 (V) TEMPERATURE (°C) 3672b1 G01 3672b1 G02 3672b1 G03
Buck Regulated Output vs LDO1 Regulated Output vs LDO2 Regulated Output vs Temperature Temperature Temperature
1.845 1.23 2.87 VIN = 3.6V VIN = 3.6V VIN = 3.6V VIN1 = 1.8V VIN1 = 1.8V V 2.85 IN1 = 1.8V 1.830 1.22 2.83 1.815 1.21 BUCK AT NO LOAD LDO1 AT NO LOAD 2.81 LDO2 AT NO LOAD TED OUTPUT (V) 1.800 TED OUTPUT (V) 1.20 TED OUTPUT (V) 2.79 BUCK AT 400mA LOAD LDO2 AT 150mA LOAD 1.785 1.19 LDO1 AT 150mA LOAD 2.77 BUCK REGULA LDO1 REGULA LDO2 REGULA 1.770 1.18 2.75 1.755 1.17 2.73 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3672b1 G04 3672b1 G05 3672b1 G06
Buck Regulated Output vs VIN LDO1 Regulated Output vs VIN1 LDO2 Regulated Output Voltage Input Voltage Input Voltage vs VIN Input Voltage
1.85 1.23 2.86 BOTH LDOs UNLOADED BUCK AND LDO2 UNLOADED BUCK AND LDO1 UNLOADED 1.84 VIN = 3.6V 1.22 2.84 1.83 1.82 1.21 2.82 1.81 BUCK AT NO LOAD ILDO1 = 0mA ILDO2 = 0mA TED OUTPUT (V) 1.80 TED OUTPUT (V) 1.20 TED OUTPUT (V) 2.80 1.79 BUCK AT 400mA LOAD I I LDO2 = 150mA 1.19 LDO1 = 150mA 2.78 1.78 BUCK REGULA 1.77 LDO1 REGULA LDO2 REGULA 1.18 2.76 1.76 1.75 1.17 2.74 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN INPUT VOLTAGE (V) VIN1 INPUT VOLTAGE (V) VIN INPUT VOLTAGE (V) 3672b1 G07 3672b1 G08 3672b1 G09 3672B1f 4