Datasheet Texas Instruments UC3847J
| Manufacturer | Texas Instruments |
| Series | UC3847 |
| Part Number | UC3847J |
Current Mode PWM Controller 16-CDIP 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
Status
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 16 |
| Package Type | J |
| Industry STD Term | CDIP |
| JEDEC Code | R-GDIP-T |
| Width (mm) | 6.92 |
| Length (mm) | 19.56 |
| Thickness (mm) | 4.57 |
| Pitch (mm) | 2.54 |
| Max Height (mm) | 5.08 |
| Mechanical Data | Download |
Parametrics
| Approx. Price (US$) | 3.74 | 1ku |
| Control Method | Current |
| Duty Cycle(Max)(%) | 50 |
| Frequency(Max)(kHz) | 500 |
| Gate Drive(Typ)(A) | 0.5 |
| Operating Temperature Range(C) | 0 to 70 |
| Package Group | 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(V) | 7.7/6.95 |
| Vin(Max)(V) | 40 |
| Vin(Min)(V) | 7 |
Eco Plan
| RoHS | Not Compliant |
| Pb Free | No |
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: UC3847 (2)
- UC3847DW UC3847J
Manufacturer's Classification
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller