onsemi NCP4330
The NCP4330 houses a dual MOSFET driver intended to be used as a companion chip in AC−DC or DC−DC multi−output post regulated power supplies.FEATURES
● Undervoltage Lockout● Thermal Shutdown for Overtemperature Protection
● PWM Operation Synchronized to the Converter Frequency
● High Gate Drive Capability
● Bootstrap for N−MOSFET High−Side Drive
● Over−Lap Management for Soft Switching
● High Efficiency Post−Regulation
● Ideal for Frequencies up to 400 kHz
● This is a Pb−Free Device MARKING DIAGRAM 8 1 SO−8 D SUFFIX CASE 751 8 4330D ALYW G 1 4330D = Device Number A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package Typical
APPLICATIONS
● ATX 3V3 Post−Regulation● Offline SMPS with MAGAMP Post−Regulation
● Multi−Outputs DC−DC Converters VDD RST Vref, UVDth VDD Band−Gap AR2 VDD Undervoltage Detection (UVD high if VDD < 4.9 V) UVD HS_DRV and LS_DRV low RESET Block Level Shifter Buffer U1 INVERTER BST HS_DRV PIN CONNECTIONS HS_DRV 1 BST 2 RST 3 C_ramp 4 8 GND 7 LS_DRV 6 VDD 5 I_ramp (Top View) ORDERING INFORMATION Device Package Shipping† C_ramp I_ramp Iramp 2.5 V/1.5 V U4 + U3 Iramp - OR Hysteresis V...