LD1585C
LD1585C is 5A LOW DROPOUT FAST RESPONSE POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED manufactured by STMicroelectronics.
DESCRIPTION
The LD1585C is a LOW DROP Voltage Regulator able to provide up to 5A of Output Current. Dropout is guaranteed at a maximum of 1.4V at the maximum output current, decreasing at lower loads. The device has been improved to be utilized in low voltage applications where transient response and minimum input voltage are critical. The most important feature of the device consist in lower dropout voltage and very fast transient SCHEMATIC DIAGRAM response. 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 LD1585C quiescent current flows into the load, so increase efficiency. Only a 10µF minimum capacitor is need for stability. The device is supplied in TO-220, D2PAK and D2PAK/A. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25°C.
September 2003
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LD1585C SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol VI IO PD Tstg Top DC Input Voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter² Value 30 Internally Limited Internally Limited -55 to +150 0 to +125 Unit V m A m W °C °C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
THERMAL DATA
Symbol Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient TO-220 3 50 D2PAK 3 62.5 Unit °C/W °C/W
APPLICATION CIRCUITS
R2 VO = VREF (1 + ) R1
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LD1585C SERIES
CONNECTION DIAGRAM (top view)
TO-220
D2PAK
D2PAK/A
ORDERING CODES
TO-220 LD1585CV15 LD1585CV18 LD1585CV25 LD1585CV28 LD1585CV33 LD1585CV50 LD1585CV80 LD1585CV90 LD1585CV12 LD1585CV D2PAK (- ) LD1585CD2T15 LD1585CD2T18 LD1585CD2T25 LD1585CD2T28 LD1585CD2T33 LD1585CD2T50 LD1585CD2T80 LD1585CD2T90 LD1585CD2T120 LD1585CD2T D2PAK/A (- ) LD1585CD2M15 LD1585CD2M18 LD1585CD2M25 LD1585CD2M28 LD1585CD2M33 LD1585CD2M50...
