|LM1084IS-12||5A Low Dropout Positive Regulators|
National ->Texas Instruments
|LM1084IS-12 Datasheet PDF : 13 Pages |
Electrical Characteristics (Continued)
Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junc-
tion temperature range for operation.
(Note 6) (Note 5) (Note 6)
Current (Note 10)
Adjust Pin Current
VIN−VOUT = 5V
VIN−VOUT = 25V
VIN = 8V
VIN = 10V
VIN = 17V
VIN −VOUT = 25V
VIN = 18V
VIN ≤ 20V
VIN ≤ 25V
TA = 25˚C, 30ms Pulse
fRIPPLE = 120Hz, = COUT = 25µF Tantalum,
IOUT = 5A
LM1084-ADJ, CADJ, = 25µF, (VIN−VO) = 3V
LM1084-3.3, VIN = 6.3V
LM1084-5.0, VIN = 8V
LM1084-12 VIN = 15V
Adjust Pin Current
10mA ≤ IOUT ≤ IFULL LOAD,
1.5V ≤ VIN−VOUT ≤ 25V
Long Term Stability
RMS Output Noise
(% of VOUT)
TA =125˚C, 1000Hrs
10Hz ≤ f≤ 10kHz
3-Lead TO-263: Control Section/Output Section
3-Lead TO-220: Control Section/Output Section
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Power dissipation is kept in a safe range by current limiting circuitry. Refer to Overload Recovery in Application Notes.
Note 3: The maximum power dissipation is a function of TJ(max) , θJA, and TA. The maximum allowable power dissipation at any ambient temperature
is PD = (TJ(max)–T A)/θJA. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
Note 4: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: IFULLLOAD is defined in the current limit curves. The IFULLLOAD Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
dissipation for the LM1084 is only achievable over a limited range of input-to-output voltage.
Note 8: Load and line regulation are measured at constant junction temperature, and are guaranteed up to the maximum power dissipation of 30W. Power
dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output
Note 9: Dropout voltage is specified over the full output current range of the device.
Note 10: The minimum output current required to maintain regulation.
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