Datasheet LT1962 (Analog Devices) - 9

LT1962 Series
Typical perForMance characTerisTics Current Limit Reverse Output Current Reverse Output Current
1.2 100 30 VIN = 7V TJ = 25°C LT1962 VIN = 0V VOUT = 0V 90 VIN = 0V VOUT = 1.22V (LT1962) 1.0 CURRENT FLOWS 25 VOUT = 1.5V (LT1962-1.5) 80 INTO OUTPUT PIN VOUT = 1.8V (LT1962-1.8) 70 VOUT = VADJ (LT1962) V 0.8 20 OUT = 2.5V (LT1962-2.5) VOUT = 3V (LT1962-3) 60 LT1962-1.5 VOUT = 3.3V (LT1962-3.3) LT1962-1.8 0.6 50 15 VOUT = 5V (LT1962-5) LT1962-2.5 LT1962-1.5/-1.8/-2.5/-3/-3.3/-5 40 LT1962-3 CURRENT LIMIT (A) 0.4 10 30 LT1962-3.3 20 0.2 REVERSE OUTPUT CURRENT (µA) REVERSE OUTPUT CURRENT (µA) 5 10 LT1962-5 LT1962 0 0 0 –50 –25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) OUTPUT VOLTAGE (V) TEMPERATURE (°C) 1962 G40 1962 G41 1962 G42
Input Ripple Rejection Input Ripple Rejection Ripple Rejection
80 80 68 IL = 300mA CBYP = 0.01µF 70 VIN = VOUT(NOMINAL) + 1V 70 66 + 50mVRMS RIPPLE CBYP = 1000pF 60 CBYP = 0 60 64 50 COUT = 10µF 50 62 CBYP = 100pF 40 40 60 30 30 58 COUT = 3.3µF RIPPLE REJECTION (dB) 20 RIPPLE REJECTION (dB) 20 I RIPPLE REJECTION (dB) L = 300mA 56 VIN = VOUT(NOMINAL) + 1V IL = 300mA 10 10 + 50mVRMS RIPPLE 54 VIN = VOUT(NOMINAL) + 1V COUT = 10µF + 0.5VP-P RIPPLE AT f = 120Hz 0 0 52 10 100 1k 10k 100k 1M 10 100 1k 10k 100k 1M –50 –25 0 25 50 75 100 125 FREQUENCY (Hz) FREQUENCY (Hz) TEMPERATURE (°C) 1962 G43 1962 G44 1962 G45
LT1962 Minimum Input Voltage Load Regulation Output Noise Spectral Density
2.50 5 ) 10 VOUT = 1.22V Hz IL = 300mA 2.25 LT1962-1.8 COUT = 10µF 0 LT1962 LT1962-1.5 C 2.00 BYP = 0 LT1962-3 IL = 300mA LT1962-5 LT1962-3.3 1.75 –5 1 1.50 IL = 1mA LT1962-3.3 1.25 –10 LT1962-3 LT1962 1.00 LT1962-2.5 LT1962-5 LT1962-2.5 –15 0.1 0.75 LT1962-1.8 LOAD REGULATION (mV) LT1962-1.5 MINIMUM INPUT VOLTAGE (V) 0.50 –20 0.25 VIN = VOUT(NOMINAL) + 1V ∆IL = 1mA TO 300mA 0 –25 OUTPUT NOISE SPECTRIAL DENSITY (µV/√ 0.01 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 10 100 1k 10k 100k TEMPERATURE (°C) TEMPERATURE (°C) FREQUENCY (Hz) 1962 G48 1962 G46 1962 G47 1962fa 1962fb For more information www.linear.com/LT1962 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts