Datasheet LT1021 (Analog Devices) - 7

LT1021
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Shunt Mode Current Limit Shunt Characteristics LT1021-7 LT1021-7 Thermal Regulation LT1021-7
1.2 60 INPUT PIN OPEN INPUT PIN OPEN VIN = 27V ∆POWER = 200mW 1.0 50 LOAD 0 REGULATION 0.8 40 TJ = –55°C – 0.5 TJ = 25°C THERMAL 0.6 30 –1.0 REGULATION* –1.5 0.4 20 OUTPUT CHANGE (mV) T CURRENT INTO OUTPUT (mA) J = 125°C CURRENT INTO OUTPUT (mA) I 0.2 10 LOAD = 10mA 0 0 0 1 2 3 4 5 6 7 8 9 0 2 4 6 8 10 12 14 16 18 0 20 40 60 80 100 120 140 OUTPUT TO GROUND VOLTAGE (V) OUTPUT VOLTAGE (V) TIME (ms) 1021 G19 LT1021 G20 *INDEPENDENT OF TEMPERATURE COEFFICIENT LT1021 G21
Load Transient Response Load Transient Response Output Noise 0.1Hz to 10Hz LT1021-7, CLOAD = 0 LT1021-7, CLOAD = 1000pF LT1021-7
I I FILTERING = 1 ZERO AT 0.1Hz SINK = 0.8mA SOURCE = 0 ISINK = 0.6mA 2 POLES AT 10Hz ISOURCE = 0 5mV I 20mV µV/DIV) SINK = 1.2mA 5µV (0.7ppm) 5mV 50mV ISINK = 0.8mA ISOURCE = 0.5mA ISOURCE = 0.5mA ISINK = 1.4mA ISINK = 1mA OUTPUT VOLTAGE CHANGE OUTPUT VOLTAGE CHANGE ISOURCE = 2-10mA ISINK = 2-10mA ISOURCE = 2-10mA ISINK = 2-10mA OUTPUT VOLTAGE NOISE (5 ∆ISOURCE = 100µAP-P ∆ISINK = 100µAP-P ∆ISOURCE = 100µAP-P ∆ISINK = 100µAP-P 0 1 2 3 4 0 1 2 3 4 0 5 10 15 20 0 5 10 15 20 0 1 2 3 4 5 6 TIME (µs) 5µs/DIV TIME (MINUTES) NOTE VERTICAL SCALE CHANGE NOTE VERTICAL SCALE CHANGE LT1021 G24 BETWEEN SOURCING AND SINKING BETWEEN SOURCING AND SINKING LT1021 G22 LT1021 G23
Output Voltage Temperature Load Regulation Drift LT1021-10 LT1021-7, LT1021-10 Input Supply Current LT1021-10
10.006 5 1.8 VIN = 12V IOUT = 0 4 T 1.6 J = – 55°C 10.004 3 1.4 TJ = 25°C 2 10.002 1.2 1 TJ = 125°C 1.0 10.000 0 0.8 – 1 9.998 0.6 OUTPUT VOLTAGE (V) – 2 OUTPUT CHANGE (mV) INPUT CURRENT (mA) – 3 0.4 9.996 – 4 0.2 9.994 – 5 0 – 50 –25 0 25 50 75 100 125 –10 – 8 – 6 – 4 – 2 0 2 4 6 8 10 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) SOURCING SINKING INPUT VOLTAGE (V) LT1021 G25 OUTPUT CURRENT (mA) 1021 G26 1021 G27 1021fc 7