STMicroelectronics L6997STR DC DC Switching Controllers
Buck Regulator Positive Output Step-Down DC-DC Controller IC 20-TSSOP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L6997STR
Detailed Description
IC REG CTRLR BUCK 20TSSOP
Package
20-TSSOP (0.173", 4.40mm Width)
Key Features
Package / Case: 20-TSSOP (0.173", 4.40mm Width); Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
L6997STR Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L6997STR DC DC Switching Controllers technical specifications.
General
Package / Case
20-TSSOP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 125°C (TJ)
Supply Voltage
3V ~ 5.5V
Lifecycle Status
Obsolete
Output Type
Transistor Driver
Number of Outputs
1
Topology
Buck
Control Features
Current Limit, Enable, Phase Control, Power Good, Soft Start
Output Configuration
Positive
Alternate Parts Comparison (L6997STR 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 | 20-TSSOP | 20-VFQFN Exposed Pad | 8-DIP | 8-DIP |
| Mounting Type | Surface Mount | Surface Mount, Wettable Flank | Through Hole | Through Hole |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 0°C ~ 70°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 3V ~ 5.5V | 6V ~ 75V | 7.6V ~ 30V | 7.6V ~ 30V |
| Clock Sync | No | Yes | No | No |
| Control Features | Current Limit, Enable, Phase 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 | 1 | 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 |
| Topology | Buck | Buck | Boost, Flyback | Boost, Flyback |
| Action |
More Parts in DC DC Switching Controllers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
UC3843BNSTMicroelectronicsBoost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-Mini DIP