LD1585CXX 5 A low dropout fast response positive voltage regulator adjustable Features Typical dropout 1.2 V Fast transient response Three terminal adjustable Guaranteed output current up to 5 A Output tolerance 1 % at 25 C and 2 % in full temperature range TO-220 Internal power and thermal limit Wide operating temperature range 0 C to 125 C Package available: TO-220 The device is supplied in TO-220. On chip trimming allows the regulator to reach a very tight Pinout compatibility with standard adjustable output voltage tolerance, within 1 % at 25 C. VREG Description The LD1585C is a low drop voltage regulator able to provide up to 5 A of output current. Dropout is guaranteed at a maximum of 1.4 V 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 response. A 2.85 V 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 10 F minimum capacitor is need for stability. Table 1. Device summary Part number Order code Output voltage LD1585CXX LD1585CV ADJ July 2008 Rev 8 1/15 www.st.com 15 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)Contents LD1585CXX Contents 1 Diagram . 3 2 Pin configuration . 4 3 Maximum ratings 5 4 Typical application 6 5 Electrical characteristics . 7 6 Typical characteristics . 8 7 Package mechanical data 12 8 Revision history . 14 2/15 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)