UC1823L883B UC1823 PWM Controller Integrated Circuits IC For Power Supply

Brand Name:Texas Instruments
Certification:ROHS
Model Number:UC1823L883B
Minimum Order Quantity:10pieces
Delivery Time:5 working days
Payment Terms:T/T, Western Union
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Integrated Circuits IC Texas Instruments (Electronic Components )

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


Description:


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:
CategoryIntegrated Circuits (ICs)
 High Speed PWM Controller IC
MfrTexas Instruments
SeriesUCC
PackageTray & Reel (TR)
Part StatusActive
PLLYes
Main PurposeGeneral purpose
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount/Though Hole
Package / CaseSOIC/DIP/CLCC
Product Base NumberUC1823
TopologyBoost, Buck, Flyback, Forward
Duty cycle (Max) (%)85
Supply voltage (Max) (V)12
UVLO thresholds on/off (V)9.2/8.4
FeaturesError Amplifier, Multi-topology, Soft Start, Synchronization Pin
Operating temperature range (C)-55 to 125
RatingMilitary
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:

ATTRIBUTEDESCRIPTION
RoHS StatusROHS3 Compliant
Moisture Sensitivity Level (MSL)3 (168 Hours)
REACH StatusREACH Unaffected
ECCNEAR99
HTSUS8542.39.0001

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China UC1823L883B UC1823 PWM Controller Integrated Circuits IC For Power Supply supplier

UC1823L883B UC1823 PWM Controller Integrated Circuits IC For Power Supply

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