| Part Number | UC3526N | UC3524N | 
|---|---|---|
| Manufacturer | Texas Instruments | Unitrode | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
|   |   | |
| Product Status | Active | Active | 
| Output Type | Transistor Driver | Transistor Driver | 
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull | - | 
| Number of Outputs | 2 | 2 | 
| Output Phases | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 8V ~ 35V | 8V ~ 40V | 
| Frequency - Switching | 1Hz ~ 400kHz | 300kHz | 
| Duty Cycle (Max) | 49% | 45% | 
| Synchronous Rectifier | Yes | No | 
| Clock Sync | Yes | No | 
| Serial Interfaces | - | - | 
| Control Features | Enable, Frequency Control, Reset, Soft Start | Current Limit, Enable, Frequency Control, Ramp | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | 18-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 18-PDIP | 16-PDIP |