NCP345 Datasheet | onsemi

Overvoltage Protection IC The NCP345 overvoltage protection circuit (OVP) protects sensitive electronic circuitry from overvoltage transients and power supply faults when used in conjunction with an external P- channel FET. The device is designed to sense an overvoltage condition and quickly disconnect the input voltage supply from the load before any damage can occur. The OVP consists of a precise voltage reference, a parator with hysteresis, control logic, and a MOSFET gate driver. The OVP is designed on a robust Bi CMOS process and is intended to withstand voltage transients up to 30 V. The device is optimized for applications that have an external AC/DC adapter or car accessory charger to power the product and/or recharge the internal batteries. The nominal overvoltage threshold is 6.85 V so it is suitable for single cell Li- Ion applications as well as 3/4 cell Ni CD/Ni MH applications. Features - Overvoltage Turn- Off Time of less than 1.0 msec - Accurate Voltage Threshold of 6.85 V (nominal) - Undervoltage Lockout Protection - CNTRL Input patible with 1.8 V Logic Levels - Pb- Free Package is Available Typical Applications - Cellular Phones - Digital Cameras - Portable puters and PDAs - Portable CD and other Consumer Electronics http://onsemi. 5 1 THIN SOT- 23- 5 SN SUFFIX CASE 483 PIN CONNECTIONS & MARKING DIAGRAM RADAYWG G OUT 1 GND 2 5 VCC CNTRL 3 4 IN (Top View) RAD = Specific Device Code A = Assembly Location Y = Year W = Work Week G = Pb- Free Package (Note: Microdot may be in either location) ORDERING INFORMATION Device Package Shipping† NCP345SNT1 SOT- 23- 5 NCP345SNT1G SOT- 23- 5 (Pb-...