STMicroelectronics L5994 DC DC Switching Controllers
Buck Regulator Positive Output Step-Down DC-DC Controller IC 32-TQFP (7x7)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L5994
Detailed Description
IC REG CTRLR BUCK 32-TQFP
Package
32-LQFP
Key Features
Package / Case: 32-LQFP; Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
L5994 Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L5994 DC DC Switching Controllers technical specifications.
General
Package / Case
32-LQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 140°C (TJ)
Supply Voltage
4.75V ~ 25V
Lifecycle Status
Obsolete
Output Type
Transistor Driver
Switching Frequency
200kHz, 300kHz
Number of Outputs
3
Topology
Buck
Control Features
Enable, Frequency Control, Power Good, Soft Start
Alternate Parts Comparison (L5994 vs L3751PUR vs UC3843BN vs UC3845BN)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 32-LQFP | 20-VFQFN Exposed Pad | 8-DIP | 8-DIP |
| Mounting Type | Surface Mount | Surface Mount, Wettable Flank | Through Hole | Through Hole |
| Operating Temperature | -40°C ~ 140°C (TJ) | -40°C ~ 125°C (TJ) | 0°C ~ 70°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 4.75V ~ 25V | 6V ~ 75V | 7.6V ~ 30V | 7.6V ~ 30V |
| Switching Frequency | 200kHz, 300kHz | 100kHz ~ 1MHz | Up to 500kHz | Up to 500kHz |
| Clock Sync | No | Yes | No | No |
| Control Features | Enable, Frequency Control, Power Good, Soft Start | Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start, Sync, Tracking | Frequency Control | Frequency Control |
| Number of Outputs | 3 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive, Isolation Capable | Positive, Isolation Capable |
| Output Phases | 1 | 1 | 1 | 1 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Synchronous Rectifier | Yes | Yes | No | No |
| Action |
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UC3843BNSTMicroelectronicsBoost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-Mini DIP
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