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Details for UC3846N by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
PWM CONTROLLER 500KHZ 7.7V-40V PDIP16
UC3846N image

UC3846N by Texas Instruments

PWM CONTROLLER 500KHZ 7.7V-40V PDIP16
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 Information
UC3846N image
RoHS Compliant
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.
Specifications
Input Voltage:
15V
Output Voltage:
13.5V
Output Current:
500mA
Supply Voltage Min:
7.7V
Supply Voltage Max:
40V
Controller IC Case Style:
PDIP
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:
-
SVHC:
No SVHC (27-Jun-2018)
Base Number:
3846
Controller Type:
PWM
Operating Temperature Range:
0°C to +70°C
Output Type:
Totem Pole
Output Voltage Max:
5.2V
Power Dissipation Pd:
1W
Supply Voltage Range:
8V to 40V
Termination Type:
Surface Mount Device
Alternate Descriptions
Current Mode PWM Controller, UC3846N RS Components
Current Mode PWM Controller 500mA 16-Pin PDIP Tube Avnet America
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Current Mode PWM Controller 500mA 16-Pin PDIP Tube Avnet Europe
PWM Controller [Texas Instruments] UC3846N PWM Controller Distrelec