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UC3845AN The Texas Instruments UC3845AN is a peak current mode PWM controller designed for efficient power management. It features a switching frequency up to 500kHz and a maximum duty cycle of 50%.
Mfr Part #:

UC3845AN

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3845AN is a peak current mode PWM controller designed for efficient power management. It features a switching frequency up to 500kHz and a maximum duty cycle of 50%.
✓ Total Stock: 1,312 pcs

UC3845AN Available from 1 distributor

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1,312 pcs
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UC3845AN Specifications Quick View

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UC3845AN Description

Short technical summary and product information.

The UC3845AN from Texas Instruments is a versatile current-mode PWM controller optimized for off-line and DC-DC converters. It operates with a switching frequency up to 500kHz and a maximum duty cycle of 50%. Key features include adjustable switching frequency, current limiting, dead time control, and an error amplifier.

 

This controller is designed for enhanced load response characteristics and includes undervoltage lockout with hysteresis and double pulse suppression. The low startup current of less than 0.5mA and trimmed oscillator discharge current contribute to its efficiency. The device is available in SOIC and PDIP packages, suitable for surface mount applications.

 

With its robust feature set, the UC3845AN is well-suited for various power supply designs requiring precise control and high efficiency. Its operating temperature range is from 0°C to 70°C.

UC3845AN Quick Information

Product Type: Current Mode PWM Controller
Series: UCx84xA
Canonical Name: UC3845AN Current Mode PWM Controller
Subcategory: DC DC Switching Controllers

UC3845AN Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UC3845AN Features

  • Peak current mode PWM controller.
  • Up to 500kHz switching frequency.
  • Maximum duty cycle of 50%.
  • Low startup current less than 0.5mA.
  • Undervoltage lockout with hysteresis.

UC3845AN Applications

  • Optimized for DC-DC converters.
  • Suitable for off-line power supplies.
  • Used in boost converter designs.
  • Applicable to buck converter designs.
  • Flyback and forward converter applications.

UC3845AN FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum switching frequency of the UC3845AN?

The maximum switching frequency is 500kHz.

What is the maximum duty cycle for the UC3845AN?

The maximum duty cycle is 50%.

What is the operating temperature range for the UC3845AN?

The operating temperature range is 0°C to 70°C.

What are the undervoltage lockout (UVLO) thresholds?

The UVLO thresholds are 8.4V and 7.6V.

What is the startup current for this PWM controller?

The startup current is less than 0.5mA.

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