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UC1823L

The Texas Instruments UC1823L is a High Speed PWM Controller designed for switched mode power supply applications. It supports multiple topologies and offers features like soft start and pulse-by-pulse current limiting.

✓ Total Stock: 38 pcs

$ Price Range: $37.03

UC1823L Available from 1 distributor

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✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	38 pcs On Request	38 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

UC1823L Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Bandwidth	Wide
Features	Error amplifier, Multi-topology, Soft start, Synchronization pin
Output Current	1.5 A
Topology	Boost, Buck, Flyback, Forward

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UC1823L Description

Short technical summary and product information.

The UC1823L from Texas Instruments is a High Speed PWM Controller optimized for high-frequency switched mode power supply applications. It is designed for use in either current-mode or voltage-mode systems and supports Boost, Buck, Flyback, and Forward topologies.

Key electrical characteristics include a maximum duty cycle of 85%, a propagation delay to output of 50ns, and a peak output current of 1.5A. The controller features a wide bandwidth error amplifier, fully latched logic with double pulse suppression, and pulse-by-pulse current limiting. It also includes soft start/max duty cycle control and under-voltage lockout with hysteresis. The trimmed bandgap reference provides a stable 5.1V ±1% output.

This PWM controller operates at switching frequencies up to 1.0MHz and has a low start-up current of 1.1mA. It is available in CDIP (J) and LCCC (FK) packages. The UC1823L is noted as not recommended for new designs, with alternatives like the TL494 available for new projects.

Applications for this controller include various switched mode power supplies where high frequency operation and precise control are required. Its robust feature set makes it suitable for demanding power conversion designs.

UC1823L Quick Information

Product Type: PWM Controller

Series: UC1823

Canonical Name: UC1823L High Speed PWM Controller

Subcategory: Linear Regulator Controllers

UC1823L Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

UC1823L Estimated Pricing

Qty	Low	High
1+	$37.03	$37.03

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC1823L Features

High Speed PWM Controller IC.
Supports Boost, Buck, Flyback, Forward topologies.
Maximum duty cycle of 85%.
50ns propagation delay to output.
1.5A peak output current.

UC1823L Applications

Optimized for high frequency SMPS.
Suitable for current-mode systems.
Suitable for voltage-mode systems.
Designed for power conversion applications.

UC1823L FAQs

7 frequently asked questions generated from this part’s specifications.

What is the maximum duty cycle for the UC1823L?

The maximum duty cycle for the UC1823L is 85%.

What is the propagation delay to output for the UC1823L?

The propagation delay to output for the UC1823L is 50 ns.

What is the peak output current of the UC1823L?

The UC1823L has a high current totem pole output capable of 1.5A peak.

What is the reference voltage for the UC1823L?

The UC1823L features a trimmed bandgap reference of 5.1V ±1%.

What is the start-up current for the UC1823L?

The UC1823L has a low start-up current of 1.1mA.

What is the maximum switching frequency for the UC1823L?

The UC1823L can operate at switching frequencies up to 1.0 MHz.

What topologies does the UC1823L support?

The UC1823L supports Boost, Buck, Flyback, and Forward topologies.