NCP3488 Datasheet | onsemi

Features http://onsemi. MARKING DIAGRAMS 8 8 1 A L Y W G SO- 8 D SUFFIX CASE 751 N3488 ALYW G = Assembly Location = Wafer Lot = Year = Work Week = Pb- Free Package PIN CONNECTIONS BST IN OD VCC 1 8 DRVH SWN PGND DRVL - Thermal Shutdown for System Protection - Internal Pulldown Resistor Suppresses Transient Turn On of Either - - - - - - - - - MOSFET Anti Cross- Conduction Protection Circuitry Floating Top Driver Acmodates Boost Voltages of up to 30 V One Input Signal Controls Both the Upper and Lower Gate Outputs Output Disable Control Turns Off Both MOSFETs plies with VRM10.x and VRM11.x Specifications Undervoltage Lockout Thermal Shutdown Thermally Enhanced Package Available This is a Pb- Free Device ORDERING INFORMATION Device NCP3488DR2G Package SO- 8 (Pb- Free) Shipping † 2500 Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. © Semiconductor ponents Industries, LLC, 2006 May, 2006 - Rev. 1 Publication Order Number: NCP3488/D OD 3 V CC TSD UVLO IN 2 8 DRVH 1 BST FALLING EDGE DELAY FALLING EDGE DELAY START STOP NON- OVERLAP TIMERS MONITOR 7 MONITOR SWN MIN DRVL OFF TIMER 4 5 6 V CC DRVL PGND Figure 1. Block Diagram PIN DESCRIPTION Pin No. 1 Symbol BST Description Upper MOSFET Floating Bootstrap Supply. A capacitor connected between BST and SW pins holds this bootstrap voltage for the high- side MOSFET as it is switched. The remended capacitor value is between 100 n F and 1.0 m F. An external diode is required with the NCP3488. Logic- Level Input. This pin has primary control of the drive outputs. Output Disable. When low, normal operation is disabled forcing DRVH and DRVL low. Input Supply. A 1.0 m F ceramic capacitor should be connected from this pin to PGND. Output drive for the lower MOSFET. Power Ground. Should be closely connected to the source of the...