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LD1084XX12 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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LD1084XX12 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 19 page April 2008 Rev 8 1/19 19 LD1084xx 5 A low drop positive voltage regulator adjustable and fixed Features ■ Typical dropout 1.3 V (at 5 A) ■ Three terminal adjustable or fixed output voltage 2.5 V, 5 V, 12 V. ■ Guaranteed output current up to 5 A ■ Output tolerance ± 1 % at 25 °C and ± 2 % in full temperature range ■ Internal power and thermal limit ■ Wide operating temperature range -40 °C to 125 °C ■ Package available: TO-220 ■ Pinout compatibility with standard adjustable VREG Description The LD1084xx is a low drop voltage regulator able to provide up to 5 A of output current. Dropout is guaranteed at a maximum of 1.5 V at the maximum output current, decreasing at lower loads. The LD1084xx is pin to pin compatible with the older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance. A 2.85 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 LD1084xx quiescent current flows into the load, so increase efficiency. Only a 10 µF minimum capacitor is need for stability. The device is supplied in TO-220. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1 % at 25 °C. TO-220 Table 1. Device summary Part numbers Order codes Output voltage LD1084XX12 LD1084V12 12 V LD1084XX25 LD1084V25 2.5 V LD1084XX50 LD1084V50 5.0 V LD1084XX LD1084V Adjustable www.st.com |
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