UC3846DW Part Information
Details for UC3846DW by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
Part Description
The UC1846/7 family of control devices provides all of the necessary features to implement fixedfrequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-todesign control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules while maintaining equal current sharing. Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off. Other features include fully-latched operation, doublepulse suppression, deadline adjust capability, and a ±1% trimmed band gap reference. The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.
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Part Features
- 500-kHz Operation
- 500-mA (Peak) Totem-pole Outputs
- Automatic Feedforward Compensation
- Automatic Symmetry Correction in Push-Pull Configuration
- Differential Current Sense Amplifier with Wide Common Mode Range
- Double-Pulse Suppression
- Enhanced Load Response Characteristics
- Parallel Operation Capability for Modular Power Systems
- Programmable Pulse-by-Pulse Current Limiting
- Shutdown Terminal
- Soft-Start Capability
- Undervoltage Lockout
- u00b11% Band Gap Reference
Part Specifications
Input Voltage | 15V |
Output Voltage | 5.1V |
Output Current | 500A |
Supply Voltage Min | 8V |
Supply Voltage Max | 40V |
Controller IC Case Style | SOIC |
No. of Pins | 16Pins |
Frequency | 500kHz |
Operating Temperature Min | 0°C |
Operating Temperature Max | 70°C |
Product Range | - |
Automotive Qualification Standard | - |
RoHS Phthalates Compliant | Yes |
MSL | MSL 2 - 1 year |
SVHC | No SVHC (27-Jun-2018) |
Base Number | 3846 |
Controller Type | PWM |
IC Generic Number | 3846 |
IC Temperature Range | Commercial |
Logic Function Number | 3846 |
Operating Temperature Range | 0°C to +70°C |
Output Type | Totem Pole |
Power Dissipation Pd | 1W |
Power Supply IC Type | PWM controller |
Supply Voltage Range | 8V to 40V |
Termination Type | Surface Mount Device |
Alternative Part Descriptions
- IC, CURRENT MODE PWM CTRL, 40V, 16-SOIC; Input Voltage:15V; Output Voltage:5.1V; Output Current:500A; Supply Voltage Min:8V; Supply Voltage Max:40V; Controller IC Case Style:SOIC; No. of Pins:16Pins; Frequency:500kHz; Operating RoHS Compliant: Yes | Newark Electronics
- Dual ended 500KHz current mode PWM controller, 0C to 70C | Texas Instruments