Datasheet LT3088 (Analog Devices) - 5

LT3088
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C unless otherwise specified. Dropout Voltage Current Limit Current Limit
1.6 2.0 1.6 V 1.8 IN = 7V VOUT = 0V 1.4 1.5 1.6 1.2 1.4 1.4 1.2 1.0 ILOAD = 800mA 1.3 1.0 0.8 0.8 0.6 1.2 I CURRENT LIMIT (A) 0.6 CURRENT LIMIT (A) DROPOUT VOLTAGE (V) LOAD = 2mA 0.4 1.1 0.4 0.2 0.2 1.0 0.0 0.0 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 0 6 12 18 24 30 36 TEMPERATURE (°C) TEMPERATURE (°C) INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V) 3088 G10 3088 G11 3082 G12
Linear Regulator Linear Regulator Linear Regulator Load Transient Response Load Transient Response Load Transient Response
150 300 150 VIN = 3V COUT = 2.2µF VIN = 3V COUT = 2.2µF VIN = 3V COUT = 0 100 VOUT = 1V VOUT = 1V 100 VOUT = 1V C 200 SET = 0.1µF CSET = 0.1µF CSET = 30pF 50 100 50 0 0 0 OUTPUT VOLTAGE DEVIATION (mV) OUTPUT VOLTAGE DEVIATION (mV) –50 OUTPUT VOLTAGE DEVIATION (mV) –100 –50 –100 ∆ILOAD =5mA TO 100mA –200 –100 ∆ILOAD = 5mA TO 100mA 100 1.0 100 tr = tf = 1µs 0 0.5 ∆I LOAD 0 LOAD LOAD LOAD = 100mA TO 800mA CURRENT (mA) CURRENT (mA) –100 CURRENT (A) 0.0 –100 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 160 180 200 0 5 10 15 20 25 30 35 40 45 50 TIME (µs) TIME (µs) TIME (µs) 8088 G13 3088 G14 3088 G15
Linear Regulator Linear Regulator Current Source Load Transient Response Line Transient Response Line Transient Response
VIN = 3V C 6 OUT = 0 6 RSET = 6.04k 0.6 VOUT = 1V RSET = 20k C R SET = 30pF 5 R OUT = 3.01Ω LOAD = 1.25Ω 5 COUT = 0 0.3 COUT = 2.2µF C 4 C SET = 30pF SET = 0.1µF 4 DEVIATION (V) 0.0 OUTPUT VOLTAGE 3 INPUT VOLTAGE (V) 3 –0.3 INPUT VOLTAGE (V) 100mA CURRENT SOURCE CONFIGURATION 40 120 0.8 110 t 20 r = tf = 1µs 0.4 0 100 LOAD 0.0 90 CURRENT (A) ∆ILOAD = 100mA TO 800mA –20 –0.4 OUTPUT VOLTAGE DEVIATION (mV) 0 5 10 15 20 25 30 35 40 45 50 –40 80 OUTPUT CURRENT (mA) 0 10 20 30 40 50 60 70 80 90 100 TIME (µs) 0 5 10 15 20 25 30 35 40 45 50 TIME (µs) TIME (µs) 3088 G16 3088 G18 3088 G17 3088fb For more information www.linear.com/LT3088 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Block Diagram Applications Information Revision History Typical Application Related Parts