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KD1084ADT33R Fiches technique(PDF) 1 Page - STMicroelectronics |
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KD1084ADT33R Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 20 page July 2008 Rev 9 1/20 20 KD1084xx KD1084Axx 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 1.8 V, 3.3 V. ■ Guaranteed output current up to 5 A ■ Output tolerance ±1 % at 25 °C and ± 2 % in full temperature range for the "A" version ■ Output tolerance ± 2 % at 25 °C and ± 3 % in full temperature range internal power and thermal limit ■ Wide operating temp. range -40 °C to 125 °C ■ Package available: D2PAK and DPAK ■ Pinout compatibility with standard adjustable VREG Description The KD1084xx 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 KD1084xx is pin to pin compatible with he 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 KD1084xx quiescent current flows into the load, so increase efficiency. Only a 10 µF minimum capacitor is need for stability. The devices are supplied in D2PAK and DPAK. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25 °C for "A" version and ± 2 % at 25 °C for standard version. DPAK D2PAK Table 1. Device summary Part numbers Order codes D2PAK DPAK Output voltage Tolerance KD1084AXX18 KD1084AD2T18R 1.8 V 1% KD1084XX33 KD1084DT33R 3.3 V 2% KD1084AXX33 KD1084ADT33R 3.3 V 1% KD1084XX KD1084DT-R ADJ 2% KD1084AXX KD1084ADT-R ADJ 1% www.st.com |
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