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UC3845D8TR The Texas Instruments UC3845D8TR is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates at frequencies up to 500kHz and features a wide input voltage range.
Mfr Part #:

UC3845D8TR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3845D8TR is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates at frequencies up to 500kHz and features a wide input voltage range.
✓ Total Stock: 3,223 pcs
$ Price Range: $0.27

UC3845D8TR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
PROSOFT ELECTRONICS ✓
Non-Authorised Inventory information
1,653 pcs
On Request
1653 pcs On Request 1 On Request On Request 24+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,570 pcs
On Request
1570 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UC3845D8TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Synchronous Rectifier
Tape & Reel
Topology
Voltage
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UC3845D8TR Description

Short technical summary and product information.

The UC3845D8TR from Texas Instruments is a single-ended, current mode PWM controller optimized for off-line and DC-to-DC converter applications. It operates at frequencies up to 500kHz and supports a wide input voltage range of 12V to 28V.

 

Key features include a low start-up current of less than 1mA, automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load-response characteristics. The device also incorporates undervoltage lockout with hysteresis, double-pulse suppression, and a high-current totem-pole output. It is housed in an 8-SOIC package suitable for surface mounting.

 

This controller is designed to implement fixed-frequency current-mode control schemes with a minimal number of external components. Its internally trimmed bandgap reference and error amplifier with low output resistance contribute to accurate and stable operation. The operating temperature range is from 0°C to 70°C.

UC3845D8TR Quick Information

Product Type: DC DC Switching Controller
Series: UC3845
Canonical Name: UC3845D8TR Current Mode PWM Controller
Subcategory: Current Mode

UC3845D8TR Compliance

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

UC3845D8TR Estimated Pricing

Qty Low High
1+ $0.27 $0.27

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

UC3845D8TR Features

  • Current mode PWM controller for power supplies.
  • Operates at frequencies up to 500kHz.
  • Wide 12V to 28V operating voltage range.
  • Surface mountable 8-SOIC package.
  • Low start-up current (<1mA).

UC3845D8TR Applications

  • Optimized for off-line converters.
  • Suitable for DC-to-DC converters.
  • Supports multiple topologies.
  • Used in power management circuits.

UC3845D8TR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3845D8TR?

The operating voltage range for the UC3845D8TR is 12V to 28V.

What is the maximum operating frequency of the UC3845D8TR?

The UC3845D8TR operates at frequencies up to 500kHz.

What is the operating temperature range for this PWM controller?

The operating temperature range for the UC3845D8TR is 0°C to 70°C.

What package type is the UC3845D8TR available in?

The UC3845D8TR is available in an 8-SOIC package.

What is the maximum duty cycle for the UC3845D8TR?

The maximum duty cycle for the UC3845D8TR is 48%.

What power supply topologies can the UC3845D8TR be used in?

The UC3845D8TR can be used in Boost, Buck, Buck-Boost, Flyback, and Forward topologies.

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