LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSElectrical Characteristics Of LD1085CDT25 (V =5.5V, C = C =10µ F, T = -40 to 125°C, I I O Aunless o ..
LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSElectrical Characteristics Of LD1085CDT15 (V =4.5V, C = C =10µ F, T = -40 to 125°C, I I O Aunless o ..
LD1085CDT-R ,3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1085CSERIES3A LOW DROP POSITIVE VOLTAGEREGULATOR ADJUSTABLE AND FIXED
LD1085CDT-R
3A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1/16October 2004 TYPICAL DROPOUT 1.3V (AT 3A) THREE TERMINAL ADJUSTABLE OR FIXED
OUTPUT VOLTAGE 1.5V, 1.8V, 2.5V, 2.85V,
3.3V, 3.6V, 5V, 8V, 9V, 12V. GUARANTEED OUTPUT CURRENT UP TO OUPUT TOLERANCE ±2% AT 25°C AND
±3% IN FULL TEMPERATURE RANGE INTERNAL POWER AND THERMAL LIMIT WIDE OPERATING TEMPERATURE RANGE
-40°C TO 125°C PACKAGE AVAILABLE: DPAK PINOUT COMPATIBILITY WITH STANDARD
ADJUSTABLE VREG
DESCRIPTION The LD1085 is a LOW DROP Voltage Regulator
able to provide up to 3A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at lower
loads. The LD1085 is pin to pin compatible with
the older 3-terminal adjustable regulators, but has
better performances in term of drop and output
tolerance.
A 2.85V output version is suitable for SCSI-2
active termination. Unlike PNP regulators, where
a part of the output current is wasted as quiescent
current, the LD1085 quiescent current flows into
the load, so increase efficiency. Only a 10µF
minimum capacitor is need for stability.
The device is supplied in DPAK. On chip trimming
allows the regulator to reach a very tight output
voltage tolerance, within ±2% at 25°C.
LD1085C
SERIES3A LOW DROP POSITIVE VOLTAGE
REGULATOR ADJUSTABLE AND FIXED
Figure 1: Schematic DiagramRev. 6
LD1085C SERIES2/16
Figure 2: Pin Connection (top view)
Table 1: Order Codes (*) Available in Tape & Reel with the suffix "R" for fixed version and "-R" for adjustable version.
Table 2: Absolute Maximum Ratings Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Table 3: Thermal Data
LD1085C SERIES3/16
Figure 3: Application Circuits
Table 4: Electrical Characteristics Of LD1085CDT15 (VI =4.5V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
LD1085C SERIES4/16
Table 5: Electrical Characteristics Of LD1085CDT18 (VI =4.8V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Table 6: Electrical Characteristics Of LD1085CDT25 (VI=5.5V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
LD1085C SERIES5/16
Table 7: Electrical Characteristics Of LD1085CDT285 (VI =5.85V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Table 8: Electrical Characteristics Of LD1085CDT33 (VI=6.3V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
LD1085C SERIES6/16
Table 9: Electrical Characteristics Of LD1085CDT36 (VI =6.6V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Table 10: Electrical Characteristics Of LD1085CDT50 (VI=8V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
LD1085C SERIES7/16
Table 11: Electrical Characteristics Of LD1085CDT80 (VI =11V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Table 12: Electrical Characteristics Of LD1085CDT90 (VI=12V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
LD1085C SERIES8/16
Table 13: Electrical Characteristics Of LD1085CDT12 (VI =15V, CI = CO =10μF, TA = -40 to 125°C,
unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
Table 14: Electrical Characteristics Of LD1085CDT (VI=4.25V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified.)
NOTE 1: See short-circuit current curve for available output current at fixed dropout.
