STMicroelectronics L99LD02Q505TR DC DC Switching Controllers
Boost Regulator Positive Output Step-Up SPI DC-DC Controller IC 32-QFN (5x5)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L99LD02Q505TR
Detailed Description
DUAL-PHASE BOOST DC/DC CONTROLLE
Package
32-VFQFN Exposed Pad
Key Features
Package / Case: 32-VFQFN Exposed Pad; Mounting Type: Surface Mount, Wettable Flank
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
L99LD02Q505TR Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L99LD02Q505TR DC DC Switching Controllers technical specifications.
General
Package / Case
32-VFQFN Exposed Pad
Mounting Type
Surface Mount, Wettable Flank
Operating Temperature
-40°C ~ 150°C (TJ)
Supply Voltage
3V ~ 28V
Lifecycle Status
Active
Output Type
Transistor Driver
Switching Frequency
100kHz ~ 470kHz
Number of Outputs
1
Topology
Boost
Control Features
Current Limit, Enable
Alternate Parts Comparison (L99LD02Q505TR vs L99LD02Q505 vs L3751PUR vs UC3843BN)
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-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 8-DIP |
| Mounting Type | Surface Mount, Wettable Flank | Surface Mount, Wettable Flank | Surface Mount, Wettable Flank | Through Hole |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | 0°C ~ 70°C (TJ) |
| Supply Voltage | 3V ~ 28V | 3V ~ 28V | 6V ~ 75V | 7.6V ~ 30V |
| Switching Frequency | 100kHz ~ 470kHz | 100kHz ~ 470kHz | 100kHz ~ 1MHz | Up to 500kHz |
| Clock Sync | Yes | Yes | Yes | No |
| Control Features | Current Limit, Enable | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Ramp, Soft Start, Watchdog | Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start, Sync, Tracking | Frequency Control |
| Duty Cycle Max | 95% | 95% | 99% | 96% |
| Output Configuration | Positive | Positive | Positive | Positive, Isolation Capable |
| Output Phases | 2 | 2 | 1 | 1 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Synchronous Rectifier | No | No | Yes | No |
| 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.
L99LD02Q505STMicroelectronicsBoost Regulator Positive Output Step-Up SPI DC-DC Controller IC 32-QFN (5x5)
UC3843BNSTMicroelectronicsBoost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-Mini DIP
UC3845BNSTMicroelectronicsBoost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-Mini DIP