| Part Number | L5994A | L5991A |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers |
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| Product Status | Obsolete | Obsolete |
| Output Type | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Up/Step-Down |
| Output Configuration | Positive | Positive, Isolation Capable |
| Topology | Buck | Flyback |
| Number of Outputs | 3 | 1 |
| Output Phases | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 4.75V ~ 25V | 7.6V ~ 20V |
| Frequency - Switching | 200kHz, 300kHz | Up to 1MHz |
| Duty Cycle (Max) | - | 93% |
| Synchronous Rectifier | Yes | Yes |
| Clock Sync | No | No |
| Serial Interfaces | - | - |
| Control Features | Enable, Frequency Control, Power Good, Soft Start | Current Limit, Frequency Control, Soft Start |
| Operating Temperature | -40°C ~ 140°C (TJ) | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | 32-LQFP | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 32-TQFP (7x7) | 16-DIP |