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UC1823L883B UC1823 PWM Controller Integrated Circuits IC For Power Supply

Integrated Circuits IC
Payment Method:
T/T, Western Union
Products Name:
UC1823L883B UC1823 High Speed PWM Controller Integrated Circuits IC
Current Mode PWM Controller 1.5A 1000kHz 20-Pin CLLCC
Electronic Components-Integrated Circuits(IC)
High Frequency Switched Mode Power Supply
Lead Free Status:
RoHS Compliant, PB Free, Lead Free
Operating Temperature:
-40°C ~ 85°C
New And Original Parts
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PWM Controller Integrated Circuits IC


UC1823L883B Integrated Circuits IC


UC1823 Integrated Circuits IC


Integrated Circuits IC Texas Instruments (Electronic Components )

UC1823L883B UC1823 High Speed PWM Controller Integrated circuits IC for high frequency switched mode power supply




The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage-mode systems with the capability for input voltage feed-forward.
Protection circuitry includes a current limit comparator, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the output is high impedance. The current limit reference (pin 11) is a DC input voltage to the current limit comparator. Consult specifications for details.
These devices feature a totem pole output designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is defined as a high level.
  • Specifications:
Category Integrated Circuits (ICs)
  High Speed PWM Controller IC
Mfr Texas Instruments
Series UCC
Package Tray & Reel (TR)
Part Status Active
Main Purpose General purpose
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount/Though Hole
Package / Case SOIC/DIP/CLCC
Product Base Number UC1823
Topology Boost, Buck, Flyback, Forward
Duty cycle (Max) (%) 85
Supply voltage (Max) (V) 12
UVLO thresholds on/off (V) 9.2/8.4
Features Error Amplifier, Multi-topology, Soft Start, Synchronization Pin
Operating temperature range (C) -55 to 125
Rating Military
Frequency (Max) (kHz) 1000
Gate drive (Typ) (A) 1.5


  • Features:
  • Compatible with Voltage or Current-Mode Topologies
    Practical Operation @ Switching Frequencies to 1.0MHz
    50ns Propagation Delay to Output
    High Current Totem Pole Output (1.5A peak)
    Wide Bandwidth Error Amplifier
    Fully Latched Logic with Double Pulse Suppression
    Pulse-by-Pulse Current Limiting
    Soft Start/Max. Duty Cycle Control
    Under-Voltage Lockout with Hysteresis
    Low Start Up Current (1.1mA)
    Trimmed Bandgap Reference (5.1V ±1%)


Environmental & Export Classifications:

RoHS Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
HTSUS 8542.39.0001


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