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UC1865N Arkusz danych(PDF) 2 Page - Texas Instruments |
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UC1865N Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 9 page 2 UC1861-1868 UC2861-2868 UC3861-3868 ABSOLUTE MAXIMUM RATINGS VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V Output Current Source or Sink (Pins 11 & 14) . . . . . . . . . . . . . . . . . . . . . 0.5A DC Pulse (0.5 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Power Ground Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.2V Inputs (Pins 2, 3, 10, & 15) . . . . . . . . . . . . . . . . . . . . –0.4 to 7V Error Amp Output Current . . . . . . . . . . . . . . . . . . . . . . . . ±2mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Junction Temperature (Operating). . . . . . . . . . . . . . . . . . 150 °C Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . 300 °C All voltages are with respect to signal ground and all currents are positive into the specified terminal. Pin numbers refer to the J and N packages. Consult Unitrode Integrated Circuits da- tabook for information regarding thermal specifications and limitations of packages. DIL-16, SOIC-16 (Top View) J or N, DW Packages CONNNECTION DIAGRAMS PLCC-20 & LCC-20 (Top View) Q & L Package DESCRIPTION (cont.) UVLO thresholds for the UC1861/62/65/66 are 16.5V (ON) and 10.5V (OFF), whereas the UC1863/64/67/68 thresholds are 8V (ON) and 7V (OFF). After VCC exceeds the UVLO threshold, a 5V generator is enabled which provides bias for the internal circuits and up to 10mA for external usage. A Fault comparator serves to detect fault conditions and set a latch while forcing the output drivers low. The Soft- Ref pin serves three functions: providing soft start, re- start delay, and the internal system reference. Each device features dual 1 Amp peak totem pole output drivers for direct interface to power MOSFETS. The out- puts are programmed to alternate in the UC1861/63/65/67 devices. The UC1862/64/66/68 out- puts operate in unison alllowing a 2 Amp peak current. PACKAGE PIN FUNCTION FUNCTION PIN Soft Ref 1 5V 2 NI 3 INV 4 E/A Out 5 Sig Gnd 6 Range 7 RMIN 8 CVCO 9 RC 10 Zero 11 NC 12 NC 13 A Out 14 Pwr Gnd 15 Pwr Gnd 16 VCC 17 B Out 18 NC 19 Fault 20 |
Podobny numer części - UC1865N |
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Podobny opis - UC1865N |
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