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UC1846, UC1846/883, UC1846/883BC

Table of contents:
Info of UC1846
Info of UC1846/883
Info of UC1846/883BC

UC1846, UC1846/883, UC1846/883BC Selling Leads, Datasheet

Package Cooled:QFP44 D/C:O9+

UC1846, UC1846/883, UC1846/883BC Picture

UC1846, UC1846/883, UC1846/883BC Datasheet download

Five Points

Part Number: UC1846

MFG: --

Package Cooled: QFP44

D/C: O9+

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UC1846 Parameters

UC1846 Features

Automatic Feed Forward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-pull Configuration
Enhanced Load Response Characteristics
Parallel Operation Capability for Modular Power Systems
Differential Current Sense Amplifier with Wide Common Mode Range
Double Pulse Suppression
500mA (Peak) Totem-pole Outputs
±1% Bandgap Reference
Under-voltage Lockout
Soft Start Capability
Shutdown Terminal
500kHZ Operation

UC1846 General Description

Current Mode PWM Controller

UC1846 Maximum Ratings

Supply Voltage (Pin 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V
Collector Supply Voltage (Pin 13). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V
Output Current, Source or Sink (Pins 11, 14). . . . . . . . . . . . . . . . . . . . . 500mA
Analog Inputs (Pins 3, 4, 5, 6, 16) . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +V_INReference Output Current (Pin 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30mA
Sync Output Current (Pin 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA
Error Amplifier Output Current (Pin 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . .. -5mA
Soft Start Sink Current (Pin 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Oscillator Charging Current (Pin 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Power Dissipation at TA=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mW
Power Dissipation at TC=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (soldering, 10 seconds. . . . . . . . . . . . . . . . . . . . . . . . +300°C
Note 1. All voltages are with respect to Ground, Pin 13. Currents are positive into, negative out of the speficied terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. Pin numbers refer to DIL and SOIC packages only.

UC1846 Features

Automatic Feed Forward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-pull Configuration
Enhanced Load Response Characteristics
Parallel Operation Capability for Modular Power Systems
Differential Current Sense Amplifier with Wide Common Mode Range
Double Pulse Suppression
500mA (Peak) Totem-pole Outputs
±1% Bandgap Reference
Under-voltage Lockout
Soft Start Capability
Shutdown Terminal
500kHZ Operation

UC1846 Typical Application

UC1846 Datasheet

UC1846 Connection Diagram

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