UC1823L883B UC1823 PWM Controller Integrated Circuits IC For Power Supply
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Detailed Product Description
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.
Environmental & Export Classifications:
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| Product Tags: PWM Controller Integrated Circuits IC UC1823L883B Integrated Circuits IC UC1823 Integrated Circuits IC |
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