Datasheet LT3085 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Adjustable 500mA Single Resistor Low Dropout Regulator |
| Pages / Page | 28 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| File Format / Size | PDF / 304 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
Model Line for this Datasheet
- LT3085EDCB#PBF LT3085EDCB#TRMPBF LT3085EDCB#TRMPBF LT3085EDCB#TRPBF LT3085EDCB#TRPBF LT3085EMS8E#PBF LT3085EMS8E#PBF LT3085EMS8E#TRPBF LT3085EMS8E#TRPBF LT3085IDCB#PBF LT3085IDCB#TRMPBF LT3085IDCB#TRMPBF LT3085IDCB#TRPBF LT3085IDCB#TRPBF LT3085IMS8E#PBF LT3085IMS8E#PBF LT3085IMS8E#TRPBF LT3085IMS8E#TRPBF LT3085MPMS8E LT3085MPMS8E#PBF LT3085MPMS8E#PBF LT3085MPMS8E#TR LT3085MPMS8E#TRPBF LT3085MPMS8E#TRPBF
Text Version of Document
LT3085
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C (Note 2). PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current ISET VIN = 1V, VCONTROL = 2V, ILOAD = 1mA, TJ = 25°C 9.9 10 10.1 μA VIN ≥ 1V, VCONTROL ≥ 2V, 1mA ≤ ILOAD ≤ 500mA (Note 9) l 9.8 10 10.2 μA Output Offset Voltage (VOUT – VSET) VOS VIN = 1V, VCONTROL = 2V, ILOAD = 1mA, TJ = 25°C –1.5 1.5 mV VIN = 1V, VCONTROL = 2V, ILOAD = 1mA l –3 3 mV Load Regulation ΔISET ΔILOAD = 1mA to 500mA –0.1 nA ΔVOS ΔILOAD = 1mA to 500mA (Note 8) l –0.6 –1 mV Line Regulation ΔISET ΔVIN = 1V to 36V, ΔVCONTROL = 2V to 36V, ILOAD = 1mA 0.1 0.5 nA/V ΔVOS ΔVIN = 1V to 36V, ΔVCONTROL = 2V to 36V, ILOAD = 1mA 0.003 mV/V Minimum Load Current (Notes 3, 9) VIN = VCONTROL = 10V l 300 500 μA VIN = VCONTROL = 36V l 1 mA VCONTROL Dropout Voltage (Note 4) ILOAD = 100mA 1.2 V ILOAD = 500mA l 1.35 1.6 V VIN Dropout Voltage (Note 4) ILOAD = 100mA l 85 150 mV ILOAD = 500mA l 275 450 mV VCONTROL Pin Current (Note 5) ILOAD = 100mA l 3 6 mA ILOAD = 500mA l 8 15 mA Current Limit (Note 9) VIN = 5V, VCONTROL = 5V, VSET = 0V, VOUT = –0.1V l 500 650 mA Error Amplifi er RMS Output Noise (Note 6) ILOAD = 500mA, 10Hz ≤ f ≤ 100kHz, COUT = 10μF, CSET = 0.1μF 33 μVRMS Reference Current RMS Output Noise (Note 6) 10Hz ≤ f≤ 100kHz 0.7 nARMS Ripple Rejection f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.1A, CSET = 0.1μF, COUT = 2.2μF 90 dB f=10kHz 75 dB f=1MHz 20 dB Thermal Regulation, ISET 10ms Pulse 0.003 %/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5.
The VCONTROL pin current is the drive current required for the may cause permanent damage to the device. Exposure to any Absolute output transistor. This current will track output current with roughly a 1:60 Maximum Rating condition for extended periods may affect device ratio. The minimum value is equal to the quiescent current of the device. reliability and lifetime.
Note 6.
Output noise is lowered by adding a small capacitor across the
Note 2.
Unless otherwise specifi ed, all voltages are with respect to VOUT. voltage setting resistor. Adding this capacitor bypasses the voltage setting The LT3085 is tested and specifi ed under pulse load conditions such that resistor shot noise and reference current noise; output noise is then equal TJ ≅ TA. The LT3085E is 100% tested at TA = 25°C. Performance of the to error amplifi er noise (see Applications Information section). LT3085E over the full –40°C to 125°C operating junction temperature
Note 7.
The SET pin is clamped to the output with diodes through 1k range is assured by design, characterization, and correlation with resistors. These resistors and diodes will only carry current under statistical process controls. The LT3085I regulators are guaranteed transient overloads. over the full –40°C to 125°C operating junction temperature range. The
Note 8.
Load regulation is Kelvin sensed at the package. LT3085 (MP grade) is 100% tested and guaranteed over the –55°C to
Note 9.
Current limit includes foldback protection circuitry. Current limit 125°C operating junction temperature range. decreases at higher input-to-output differential voltages. See the Typical
Note 3.
Minimum load current is equivalent to the quiescent current of Performance Characteristics graphs for more information. the part. Since all quiescent and drive current is delivered to the output
Note 10.
This IC includes over-temperature protection that is intended of the part, the minimum load current is the minimum current required to to protect the device during momentary overload conditions. Junction maintain regulation. temperature will exceed the maximum operating junction temperature
Note 4.
For the LT3085, dropout is caused by either minimum control when over-temperature protection is active. Continuous operation above voltage (VCONTROL) or minimum input voltage (VIN). Both parameters are the specifi ed maximum operating junction temperature may impair device specifi ed with respect to the output voltage. The specifi cations represent reliability. the minimum input-to-output differential voltage required to maintain regulation. 3085fb 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION 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 specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C (Note 2). PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current ISET VIN = 1V, VCONTROL = 2V, ILOAD = 1mA, TJ = 25°C 9.9 10 10.1 μA VIN ≥ 1V, VCONTROL ≥ 2V, 1mA ≤ ILOAD ≤ 500mA (Note 9) l 9.8 10 10.2 μA Output Offset Voltage (VOUT – VSET) VOS VIN = 1V, VCONTROL = 2V, ILOAD = 1mA, TJ = 25°C –1.5 1.5 mV VIN = 1V, VCONTROL = 2V, ILOAD = 1mA l –3 3 mV Load Regulation ΔISET ΔILOAD = 1mA to 500mA –0.1 nA ΔVOS ΔILOAD = 1mA to 500mA (Note 8) l –0.6 –1 mV Line Regulation ΔISET ΔVIN = 1V to 36V, ΔVCONTROL = 2V to 36V, ILOAD = 1mA 0.1 0.5 nA/V ΔVOS ΔVIN = 1V to 36V, ΔVCONTROL = 2V to 36V, ILOAD = 1mA 0.003 mV/V Minimum Load Current (Notes 3, 9) VIN = VCONTROL = 10V l 300 500 μA VIN = VCONTROL = 36V l 1 mA VCONTROL Dropout Voltage (Note 4) ILOAD = 100mA 1.2 V ILOAD = 500mA l 1.35 1.6 V VIN Dropout Voltage (Note 4) ILOAD = 100mA l 85 150 mV ILOAD = 500mA l 275 450 mV VCONTROL Pin Current (Note 5) ILOAD = 100mA l 3 6 mA ILOAD = 500mA l 8 15 mA Current Limit (Note 9) VIN = 5V, VCONTROL = 5V, VSET = 0V, VOUT = –0.1V l 500 650 mA Error Amplifi er RMS Output Noise (Note 6) ILOAD = 500mA, 10Hz ≤ f ≤ 100kHz, COUT = 10μF, CSET = 0.1μF 33 μVRMS Reference Current RMS Output Noise (Note 6) 10Hz ≤ f≤ 100kHz 0.7 nARMS Ripple Rejection f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.1A, CSET = 0.1μF, COUT = 2.2μF 90 dB f=10kHz 75 dB f=1MHz 20 dB Thermal Regulation, ISET 10ms Pulse 0.003 %/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5.
The VCONTROL pin current is the drive current required for the may cause permanent damage to the device. Exposure to any Absolute output transistor. This current will track output current with roughly a 1:60 Maximum Rating condition for extended periods may affect device ratio. The minimum value is equal to the quiescent current of the device. reliability and lifetime.
Note 6.
Output noise is lowered by adding a small capacitor across the
Note 2.
Unless otherwise specifi ed, all voltages are with respect to VOUT. voltage setting resistor. Adding this capacitor bypasses the voltage setting The LT3085 is tested and specifi ed under pulse load conditions such that resistor shot noise and reference current noise; output noise is then equal TJ ≅ TA. The LT3085E is 100% tested at TA = 25°C. Performance of the to error amplifi er noise (see Applications Information section). LT3085E over the full –40°C to 125°C operating junction temperature
Note 7.
The SET pin is clamped to the output with diodes through 1k range is assured by design, characterization, and correlation with resistors. These resistors and diodes will only carry current under statistical process controls. The LT3085I regulators are guaranteed transient overloads. over the full –40°C to 125°C operating junction temperature range. The
Note 8.
Load regulation is Kelvin sensed at the package. LT3085 (MP grade) is 100% tested and guaranteed over the –55°C to
Note 9.
Current limit includes foldback protection circuitry. Current limit 125°C operating junction temperature range. decreases at higher input-to-output differential voltages. See the Typical
Note 3.
Minimum load current is equivalent to the quiescent current of Performance Characteristics graphs for more information. the part. Since all quiescent and drive current is delivered to the output
Note 10.
This IC includes over-temperature protection that is intended of the part, the minimum load current is the minimum current required to to protect the device during momentary overload conditions. Junction maintain regulation. temperature will exceed the maximum operating junction temperature
Note 4.
For the LT3085, dropout is caused by either minimum control when over-temperature protection is active. Continuous operation above voltage (VCONTROL) or minimum input voltage (VIN). Both parameters are the specifi ed maximum operating junction temperature may impair device specifi ed with respect to the output voltage. The specifi cations represent reliability. the minimum input-to-output differential voltage required to maintain regulation. 3085fb 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION 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
