| Part Number | FDMF6820B | FDMF6821B | 
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | 
| Category | PMIC - Full, Half-Bridge Drivers | PMIC - Full, Half-Bridge Drivers | 
|   |   | |
| Product Status | Active | Active | 
| Output Configuration | Half Bridge | Half Bridge | 
| Applications | Synchronous Buck Converters | Synchronous Buck Converters | 
| Interface | PWM | Logic, PWM | 
| Load Type | Inductive | Inductive, Capacitive, Resistive | 
| Technology | DrMOS | DrMOS, Power MOSFET | 
| Rds On (Typ) | 1Ohm LS, 1Ohm HS | 1Ohm LS, 1Ohm HS | 
| Current - Output / Channel | 55A | 55A | 
| Current - Peak Output | - | 55A | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Voltage - Load | 3V ~ 16V | 4.5V ~ 5.5V | 
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | 
| Features | Bootstrap Circuit, Status Flag | Bootstrap Circuit | 
| Fault Protection | Over Temperature, Shoot-Through, UVLO | Over Temperature, Shoot-Through, UVLO | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 40-TFQFN Exposed Pad | 40-TFQFN Exposed Pad | 
| Supplier Device Package | 40-PQFN (6x6) | 40-PQFN (6x6) |