Datasheet LT3070 (Analog Devices) - 7

LT3070
TYPICAL PERFORMANCE CHARACTERISTICS Output Voltage (1.8V) REF/BYP Pin Voltage vs Temperature GND Pin Current vs IOUT vs Temperature
1.818 3.0 606 ILOAD = 10mA VIN = VOUT + 300mV CREF/BYP = 0.01µF 1.814 TJ = 25°C 2.5 604 1.810 1.806 2.0 602 TAGE (V) 1.802 1.5 600 1.798 1.794 1.0 598 OUTPUT VOL REF/BYP VOLTAGE (mV) 1.790 GND PIN CURRENT (mA) 0.5 VOUT = 1.8V, VBIAS = 3.3V 596 1.786 VOUT = 1.2V, VBIAS = 3.3V VOUT = 0.8V, VBIAS = 2.5V 1.782 0 594 –75 –50 –25 0 25 50 75 100 125 150 175 0 1 2 3 4 5 –75 –50 –25 0 25 50 75 100 125 150 175 TEMPERATURE (°C) OUTPUT CURRENT (A) TEMPERATURE (°C) 3070 G10 3070 G12 3070 G11
BIAS Pin Undervoltage Lockout BIAS Pin Current in Nap Mode BIAS Pin Current vs IOUT Threshold
400 10 2.5 VBIAS = 2.5V VIN = VOUT + 300mV 350 VEN = 0V 9 TJ = 25°C 8 2.0 300 7 VBIAS RISING 250 VOUT = 1.8V 6 V 1.5 BIAS = 3.3V 200 5 VOUT = 0.8V VBIAS = 2.5V VBIAS FALLING 150 4 1.0 3 BIAS PIN CURRENT (µA) 100 BIAS PIN CURRENT (mA) 2 UVLO THRESHOLD VOLTAGE (V) 0.5 50 1 0 0 0 –75 –50 –25 0 25 50 75 100 125 150 175 0 1 2 3 4 5 –75 –50 –25 0 25 50 75 100 125 150 175 TEMPERATURE (°C) OUTPUT CURRENT (A) TEMPERATURE (°C) 3070 G13 3070 G14 3070 G15
Enable Pin Threshold and EN Pin Thresholds Hysteresis vs VBIAS PWRGD Threshold Voltage
2.0 4.0 1.00 VBIAS = 2.5V TJ = –55°C TO 125°C V 1.8 BIAS = 2.5V 3.5 TYPICAL HYSTERESIS = 150mV VOUT = 1V 1.6 VBIAS 3.0 0.95 1.4 EN PIN RISING TAGE (V) 1.2 2.5 MAX ENABLE VOUT RISING 1.0 2.0 EN PIN FALLING TYP ENABLE 0.90 0.8 1.5 0.6 MIN DISABLE V 1.0 OUT FALLING ENABLE PIN THRESHOLD (V) 0.4 TYP DISABLE 0.85 ENABLE/DISABLE THRESHOLD (V) 0.2 0.5 PWRGD TRESHOLD VOL 0 0 –75 –50 –25 0 25 50 75 100 125 150 175 2 2.5 3 3.5 4 0.80 TEMPERATURE (°C) BIAS VOLTAGE (V) –75 –50 –25 0 25 50 75 100 125 150 175 3070 G16 3070 G17 TEMPERATURE (°C) 3070 G18 3070fc For more information www.linear.com/LT3070 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts