Datasheet Texas Instruments UC3846Q
| Manufacturer | Texas Instruments |
| Series | UC3846 |
| Part Number | UC3846Q |
Current Mode PWM Controller 20-PLCC 0 to 70
Datasheets
UCx846/7 Current Mode PWM Controller datasheet
PDF, 1.6 Mb, Revision: C, File published: Jan 4, 2016
Extract from the document
Prices
Status
| Lifecycle Status | NRND (Not recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 20 |
| Package Type | FN |
| Industry STD Term | PLCC |
| JEDEC Code | S-PQCC-J |
| Package QTY | 46 |
| Carrier | TUBE |
| Device Marking | UC3846Q |
| Width (mm) | 8.96 |
| Length (mm) | 8.96 |
| Thickness (mm) | 4.06 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 4.57 |
| Mechanical Data | Download |
Parametrics
| Control Method | Current |
| Duty Cycle(Max) | 50 % |
| Frequency(Max) | 500 kHz |
| Gate Drive(Typ) | 0.5 A |
| Operating Temperature Range | 0 to 70 C |
| Package Group | PDIP,SOIC |
| Rating | Catalog |
| Special Features | Error Amplifier,Multi-topology,Soft Start,Synchronization Pin |
| Topology | Boost,Flyback,Forward,Half-Bridge,Push-Pull |
| UVLO Thresholds On/Off | 7.7/6.95 V |
| Vin(Max) | 40 V |
| Vin(Min) | 7 V |
Eco Plan
| RoHS | Compliant |
Application Notes
- Modeling Analysis and Compensation of the Current-Mode ConverterPDF, 189 Kb, File published: Sep 5, 1999
As current-mode conversion increases in popularity several peculiarities associated with fixed-frequency peak-current detecting schemes have surfaced. These include instability above 50% duty cycle a tendency towards subharmonic oscillation non-ideal loop response and an increased sensitivity to noise. This application note attempts to show that the performance of any current-mode converter c - U-93 A New Integrated Circuit for Current Mode ControlPDF, 411 Kb, File published: Sep 5, 1999
Advantages of current-mode control over conventional PWM approaches to switching power converters include automatic feed-forward automatic symmetry correction inherent current-limiting simple loop-compensation enhanced load-response and the capability for parallel operation. This application note introduces the first control integrated circuit specifically designed for this topology defines - DN-45 UC3846 UC3856 and UCC3806 Push Pull PWM Current Mode Control ICsPDF, 27 Kb, File published: Sep 5, 1999
The UC3856 is a pin-for-pin-compatible high-performance bipolar version of the industry standard UC3846. It can replace the UC3846 with few circuit modifications and it features increased speed higher gate-drive current and reduced propagation delays. The UCC3806 is a BiCMOS pin-for-pin compatible ultra-low-power version ideal for battery low-power and high-speed applications. The UCC3806
Model Line
Series: UC3846 (8)
Manufacturer's Classification
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller
