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FA5538 Datasheet(PDF) 5 Page - Fuji Electric |
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FA5538 Datasheet(HTML) 5 Page - Fuji Electric |
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5 / 33 page  AN-087E Rev.1.0 April-2011 5 FA5526/5527/5528/5536/5537/5538 Fuji Electric Co., Ltd. http://www.fujielectric.co.jp/products/semiconductor/ 4. Block diagram FA5526 / FA5527 / FA5528 for Timer Latched OCP FA5536 / FA5537 / FA5538 for Auto-Recovery OCP 5. Pin assignments Pin Symbol Function Description 1 CS Soft start/latch-mode stop Time Setting of Soft start and Over Current Protection 2 FB Feedback input Input for controlling current comparator threshold voltage 3 IS Current sensor input Input for monitoring MOSFET current 4 GND Ground Power supply ground 5 OUT Output Output for directly driving a MOSFET 6 VCC Power supply Power supply for ICs 7 (NC) No connection No connection 8 VH High voltage input Input terminal for start-up circuit 11µA/4µA 1.3mA 8.5V/7.9V Latch 5V ENB VCC UVLO 4.0V/3.5V START off 5V reg GND (4) VCC (6) VH (8) CS (1) OVP UVLO 28V 2.9V OverLoad 4.8V 15V/9V 20k 60k 7.4k 3R R FB (2) IS (3) TRG CLR 1 shot Q Blanking OUT (5) OUT PUT ENB Q Q S R F.F. IS comp. 0.52V 1Meg 5pF x1 Buf 30V VCO Q T OSC 0.28V SLOPE GENERATOR Σ - + 0.68V 11µA/4µA 1.3mA 8.5V/7.9V Auto-Recovery 5V ENB VCC UVLO 4.0V/3.5V START off 5V reg GND (4) VCC (6) VH (8) CS (1) OVP UVLO 28V 2.9V OverLoad 4.8V 15V/9V 20k 60k 7.4k 3R R FB (2) IS (3) TRG CLR 1 shot Q Blanking OUT (5) OUT PUT ENB Q Q S R F.F. IS comp. 0.52V 1Meg 5pF x1 Buf 30V VCO Q T OSC 0.28V SLOPE GENERATOR Σ - + 0.68V |
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