STMicroelectronics L5991A DC DC Switching Controllers
Flyback Regulator Positive, Isolation Capable Output Step-Up/Step-Down DC-DC Controller IC 16-DIP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L5991A
Detailed Description
IC REG CTRLR FLYBACK 16DIP
Package
16-DIP (0.300", 7.62mm)
Key Features
Package / Case: 16-DIP (0.300", 7.62mm); Mounting Type: Through Hole
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
L5991A Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L5991A DC DC Switching Controllers technical specifications.
General
Package / Case
16-DIP
Mounting Type
Through Hole
Operating Temperature
-40°C ~ 150°C (TJ)
Supply Voltage
7.6V ~ 20V
Lifecycle Status
Obsolete
Output Type
Transistor Driver
Switching Frequency
Up to 1MHz
Number of Outputs
1
Topology
Flyback
Control Features
Current Limit, Frequency Control, Soft Start
Alternate Parts Comparison (L5991A 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 | 16-DIP | 20-VFQFN Exposed Pad | 8-DIP | 8-DIP |
| Mounting Type | Through Hole | Surface Mount, Wettable Flank | Through Hole | Through Hole |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | 0°C ~ 70°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 7.6V ~ 20V | 6V ~ 75V | 7.6V ~ 30V | 7.6V ~ 30V |
| Switching Frequency | Up to 1MHz | 100kHz ~ 1MHz | Up to 500kHz | Up to 500kHz |
| Clock Sync | No | Yes | No | No |
| Control Features | Current Limit, Frequency Control, Soft Start | Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start, Sync, Tracking | Frequency Control | Frequency Control |
| Duty Cycle Max | 93% | 99% | 96% | 48% |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Output Configuration | Positive, Isolation Capable | Positive | Positive, Isolation Capable | Positive, Isolation Capable |
| Output Phases | 1 | 1 | 1 | 1 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Action |
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