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UC3845AD8 The Texas Instruments UC3845AD8 is a current mode PWM controller designed for off-line and DC-DC converters. It operates within a 7.6V to 30V range at frequencies up to 500kHz.
Mfr Part #:

UC3845AD8

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3845AD8 is a current mode PWM controller designed for off-line and DC-DC converters. It operates within a 7.6V to 30V range at frequencies up to 500kHz.
✓ Total Stock: 129,310 pcs
$ Price Range: $0.63

UC3845AD8 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
120,533 pcs
On Request
120533 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
8,777 pcs
On Request
8777 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.

UC3845AD8 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
Supplier Package
Synchronous Rectifier
Tape & Reel
Topology
Voltage
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UC3845AD8 Description

Short technical summary and product information.

The UC3845AD8 from Texas Instruments is an improved version of the UCx84x family, offering enhanced features for current-mode or switched-mode power supply control. This device is optimized for off-line and DC-DC converter applications.

 

Key electrical specifications include an operating voltage range of 7.6V to 30V and a maximum duty cycle of 48%. It supports multiple topologies such as Boost, Buck, Flyback, and Forward, functioning as a single output Transistor Driver. The controller operates at frequencies up to 500kHz and features frequency control.

 

Designed for surface mount, the UC3845AD8 comes in an 8-SOIC package with a width of 3.90mm. Its operating temperature range is from 0°C to 70°C. The device boasts low start-up current (< 0.5mA) and features like automatic feedforward compensation, pulse-by-pulse current limiting, and undervoltage lockout with hysteresis.

UC3845AD8 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3845AD8 Current Mode PWM Controller
Subcategory: Current Mode

UC3845AD8 Compliance

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

UC3845AD8 Estimated Pricing

Qty Low High
1+ $0.63 $0.63

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

UC3845AD8 Features

  • Current mode PWM controller for power supplies.
  • Operates from 7.6V to 30V input voltage.
  • Maximum duty cycle of 48%.
  • Frequency up to 500kHz.
  • Surface mount 8-SOIC package.

UC3845AD8 Applications

  • Optimized for off-line converters.
  • Suitable for DC-DC power modules.
  • Used in boost converter designs.
  • Applicable to buck converter designs.
  • Supports flyback converter designs.

UC3845AD8 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3845AD8?

The operating voltage range is 7.6V to 30V.

What is the maximum operating frequency of the UC3845AD8?

The maximum operating frequency is 500kHz.

What is the maximum duty cycle for the UC3845AD8?

The maximum duty cycle is 48%.

What is the operating temperature range for the UC3845AD8?

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

What package type is the UC3845AD8 available in?

The UC3845AD8 is available in an 8-SOIC package.

What type of mounting does the UC3845AD8 require?

The UC3845AD8 requires surface mount type.

What are the supported topologies for the UC3845AD8?

The UC3845AD8 supports Boost, Buck, Flyback, and Forward topologies.

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