Datasheet LT1461 (Analog Devices) - 5

LT1461
Typical perForMance characTerisTics Characteristic curves are similar for most LT1461s. Curves from the LT1461-2.5 and the LT1461-5 represent the extremes of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. 2.5V Reference Voltage 2.5V Line Regulation vs Temperature 2.5V Load Regulation vs Temperature
2.5020 1600 0 TEMPCO –60°C TO 120°C VIN = 7.5V 2.5015 3 TYPICAL PARTS –1 2.5010 1200 –2 125°C 2.5005 –3 25°C 2.5000 800 –4 2.4995 –5 REFERENCE VOLTAGE (V) 2.4990 400 LINE REGULATION (ppm/V) –6 OUTPUT VOLTAGE CHANGE (ppm) –55°C 2.4985 –7 SUPPLY ∆ = 15V 5V – 20V 2.4980 0 –8 –60 –40 –20 0 20 40 60 80 100 120 0.1 1 10 100 –40 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) OUTPUT CURRENT (mA) TEMPERATURE (°C) 1461 G02 1461 G01 1461 G03
2.5V Minimum Input/Output 2.5V Supply Current 2.5V Ripple Rejection Ratio Voltage Differential vs Load Current vs Input Voltage vs Frequency
10 1000 100 90 80 70 60 1 100 50 25°C 125°C 40 125°C 30 SUPPLY CURRENT (µA) INPUT/OUTPUT VOLTAGE (V) 25°C –55°C RIPPLE REJECTION RATIO (dB) 20 –55°C 10 0.1 10 0 0.1 1 10 100 0 5 10 15 20 25 0.01 0.1 1 10 100 1000 OUTPUT CURRENT (mA) INPUT VOLTAGE (V) FREQUENCY (kHz) 1461 G04 1461 G05 1641 G06
2.5V Output Impedance vs Frequency 2.5V Turn-On Time 2.5V Turn-On Time
1000 COUT = 2µF VIN VIN 20 20 C 10 10 OUT = 1µF 100 0 0 VOLTAGE (V) 2 VOLTAGE (V) 2 10 VOUT VOUT OUTPUT IMPEDANCE (Ω) 1 1 CIN = 1µF CIN = 1µF 0 CL = 2µF 0 CL = 2µF RL = ∞ RL = 50Ω 10.01 0.1 1 10 TIME (100µs/DIV) TIME (100µs/DIV) FREQUENCY (kHz) 1461 G08 1461 G09 1461 G07 1461fb For more information www.linear.com/LT1461 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Available Options Electrical Characteristics Applications Information Simplified Schematic Package Description Revision History Typical Application Related Parts