Datasheet LT3089 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | 800mA Single Resistor Rugged Linear Regulator with Monitors |
| Páginas / Página | 28 / 3 — ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 1.8 Mb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LT3089
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current ISET VIN = 2V, ILOAD = 3mA 49.5 50 50.5 µA 2V ≤ VIN ≤ 36V, 3mA ≤ ILOAD ≤ 800mA l 48.75 50 51.25 µA Offset Voltage VOS VIN = 2V, ILOAD = 3mA –1.5 0 1.5 mV (VOUT – VSET) VIN = 2V, ILOAD = 3mA l –3.5 0 3.5 mV ISET Load Regulation ∆ILOAD = 3mA to 800mA –0.1 nA VOS Load Regulation ∆ILOAD = 3mA to 800mA DF, FE Packages l –0.5 –3 mV (Note 7) R Package l –1.5 –4 mV Line Regulation ∆ISET ∆VIN = 2V to 36V, ILOAD = 3mA 1.5 nA/V ∆VOS ∆VIN = 2V to 36V, ILOAD = 3mA 0.001 mV/V Minimum Load Current (Note 3) 2V ≤ VIN ≤ 36V l 1.1 3 mA Dropout Voltage (Note 4) ILOAD = 100mA 1.21 V ILOAD = 800mA l 1.47 1.65 V Internal Current Limit VIN = 5V, VSET = 0V, VOUT = –0.1V l 0.8 1 A ILIM Programming Ratio l 155 175 210 mA/kΩ ILIM Minimum Output Current Resistance 300 Ω IMON Full-Scale Output Current ILOAD = 800mA l 130 160 190 µA IMON Scale Factor 100mA ≤ ILOAD ≤ 800mA 200 µA/A IMON Operating Range l VOUT – 40V VOUT + 0.4V V TEMP Output Current (Note 9) TJ > 5°C 1 µA/°C TEMP Output Current Absolute Error (Note 9) 0°C <TJ ≤ 125°C –10 10 µA 125°C <TJ ≤ 150°C –15 15 µA Reference Current RMS Output Noise (Note 5) 10Hz ≤ f ≤ 100kHz 5.7 nARMS Error Amplifier RMS Output Noise (Note 5) ILOAD = 800mA, 10Hz ≤ f ≤ 100kHz, COUT =10µF, 27 µVRMS CSET = 0.1µF Ripple Rejection f = 120Hz 75 90 dB VRIPPLE = 0.5VP-P, ILOAD = 0.1A, CSET = 0.1µF, f = 10kHz 75 dB COUT=10µF, VIN = VOUT(NOMINAL) + 3V f = 1MHz 20 dB Thermal Regulation, ISET 10ms Pulse 0.003 %/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
For the LT3089, dropout is specified as the minimum input-to- may cause permanent damage to the device. Exposure to any Absolute output voltage differential required supplying a given output current. Maximum Rating condition for extended periods may affect device
Note 5:
Adding a small capacitor across the reference current resistor reliability and lifetime. lowers output noise. Adding this capacitor bypasses the resistor shot
Note 2:
Unless otherwise specified, all voltages are with respect to VOUT. noise and reference current noise; output noise is then equal to error The LT3089 is tested and specified under pulse load conditions such amplifier noise (see Applications Information section). that TJ ≈ TA. The LT3089E is tested at TA = 25°C and performance is
Note 6:
Diodes with series 400Ω resistors clamp the SET pin to the guaranteed from 0°C to 125°C. Performance of the LT3089E over the OUT pin. These diodes and resistors only carry current under transient full –40°C and 125°C operating temperature range is assured by design, overloads. characterization, and correlation with statistical process controls. The
Note 7:
Load regulation is Kelvin sensed at the package. LT3089I is guaranteed over the full –40°C to 125°C operating junction temperature range. High junction temperatures degrade operating
Note 8:
This IC includes overtemperature protection that protects the lifetimes. Operating lifetime is degraded at junction temperatures greater device during momentary overload conditions. Junction temperature than 125°C. exceeds the maximum operating junction temperature when overtemperature protection is active. Continuous operation above the
Note 3:
Minimum load current is equivalent to the quiescent current of specified maximum operating junction temperature may impair device the part. Since all quiescent and drive current is delivered to the output reliability. of the part, the minimum load current is the minimum current required to maintain regulation.
Note 9:
The TEMP pin output current represents the average die junction temperature. Due to power dissipation and thermal gradients across the die, the TEMP pin output current measurement does not guarantee that absolute maximum junction temperature is not exceeded. 3089f For more information www.linear.com/LT3089 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current ISET VIN = 2V, ILOAD = 3mA 49.5 50 50.5 µA 2V ≤ VIN ≤ 36V, 3mA ≤ ILOAD ≤ 800mA l 48.75 50 51.25 µA Offset Voltage VOS VIN = 2V, ILOAD = 3mA –1.5 0 1.5 mV (VOUT – VSET) VIN = 2V, ILOAD = 3mA l –3.5 0 3.5 mV ISET Load Regulation ∆ILOAD = 3mA to 800mA –0.1 nA VOS Load Regulation ∆ILOAD = 3mA to 800mA DF, FE Packages l –0.5 –3 mV (Note 7) R Package l –1.5 –4 mV Line Regulation ∆ISET ∆VIN = 2V to 36V, ILOAD = 3mA 1.5 nA/V ∆VOS ∆VIN = 2V to 36V, ILOAD = 3mA 0.001 mV/V Minimum Load Current (Note 3) 2V ≤ VIN ≤ 36V l 1.1 3 mA Dropout Voltage (Note 4) ILOAD = 100mA 1.21 V ILOAD = 800mA l 1.47 1.65 V Internal Current Limit VIN = 5V, VSET = 0V, VOUT = –0.1V l 0.8 1 A ILIM Programming Ratio l 155 175 210 mA/kΩ ILIM Minimum Output Current Resistance 300 Ω IMON Full-Scale Output Current ILOAD = 800mA l 130 160 190 µA IMON Scale Factor 100mA ≤ ILOAD ≤ 800mA 200 µA/A IMON Operating Range l VOUT – 40V VOUT + 0.4V V TEMP Output Current (Note 9) TJ > 5°C 1 µA/°C TEMP Output Current Absolute Error (Note 9) 0°C <TJ ≤ 125°C –10 10 µA 125°C <TJ ≤ 150°C –15 15 µA Reference Current RMS Output Noise (Note 5) 10Hz ≤ f ≤ 100kHz 5.7 nARMS Error Amplifier RMS Output Noise (Note 5) ILOAD = 800mA, 10Hz ≤ f ≤ 100kHz, COUT =10µF, 27 µVRMS CSET = 0.1µF Ripple Rejection f = 120Hz 75 90 dB VRIPPLE = 0.5VP-P, ILOAD = 0.1A, CSET = 0.1µF, f = 10kHz 75 dB COUT=10µF, VIN = VOUT(NOMINAL) + 3V f = 1MHz 20 dB Thermal Regulation, ISET 10ms Pulse 0.003 %/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
For the LT3089, dropout is specified as the minimum input-to- may cause permanent damage to the device. Exposure to any Absolute output voltage differential required supplying a given output current. Maximum Rating condition for extended periods may affect device
Note 5:
Adding a small capacitor across the reference current resistor reliability and lifetime. lowers output noise. Adding this capacitor bypasses the resistor shot
Note 2:
Unless otherwise specified, all voltages are with respect to VOUT. noise and reference current noise; output noise is then equal to error The LT3089 is tested and specified under pulse load conditions such amplifier noise (see Applications Information section). that TJ ≈ TA. The LT3089E is tested at TA = 25°C and performance is
Note 6:
Diodes with series 400Ω resistors clamp the SET pin to the guaranteed from 0°C to 125°C. Performance of the LT3089E over the OUT pin. These diodes and resistors only carry current under transient full –40°C and 125°C operating temperature range is assured by design, overloads. characterization, and correlation with statistical process controls. The
Note 7:
Load regulation is Kelvin sensed at the package. LT3089I is guaranteed over the full –40°C to 125°C operating junction temperature range. High junction temperatures degrade operating
Note 8:
This IC includes overtemperature protection that protects the lifetimes. Operating lifetime is degraded at junction temperatures greater device during momentary overload conditions. Junction temperature than 125°C. exceeds the maximum operating junction temperature when overtemperature protection is active. Continuous operation above the
Note 3:
Minimum load current is equivalent to the quiescent current of specified maximum operating junction temperature may impair device the part. Since all quiescent and drive current is delivered to the output reliability. of the part, the minimum load current is the minimum current required to maintain regulation.
Note 9:
The TEMP pin output current represents the average die junction temperature. Due to power dissipation and thermal gradients across the die, the TEMP pin output current measurement does not guarantee that absolute maximum junction temperature is not exceeded. 3089f For more information www.linear.com/LT3089 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts