UC3846N

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> Semiconductors - ICs

> Power Management

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Details for Texas Instruments

UC3846N

Current Mode PWM Controller
Buy Directly from Texas Instruments (4485 in Stock)
$2.1300 per unit
Series Information for UC3846N - Texas Instruments

Features

  • feature
    500-kHz Operation
  • feature
    500-mA (Peak) Totem-pole Outputs
  • feature
    Automatic Feedforward Compensation
  • feature
    Automatic Symmetry Correction in Push-Pull Configuration
  • feature
    Differential Current Sense Amplifier with Wide Common Mode Range
  • feature
    Double-Pulse Suppression
  • feature
    Enhanced Load Response Characteristics
  • feature
    Parallel Operation Capability for Modular Power Systems
  • feature
    Programmable Pulse-by-Pulse Current Limiting
  • feature
    Shutdown Terminal
  • feature
    Soft-Start Capability
  • feature
    Undervoltage Lockout
  • feature
    u00b11% Band Gap Reference

Description

PWM CONTROLLER 500KHZ 7.7V-40V PDIP16
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

Avnet America

Current Mode PWM Controller 500mA 16-Pin PDIP Tube

Avnet America product

Avnet Europe

Current Mode PWM Controller 500mA 16-Pin PDIP Tube

Avnet Europe product

Texas Instruments

Current Mode PWM Controller

Texas Instruments product

Distrelec

5.23

Distrelec product