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UC3845BN The STMicroelectronics UC3845BN is a current mode PWM controller designed for boost and flyback topologies. It operates with a switching frequency up to 500kHz.
Mfr Part #:

UC3845BN

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics UC3845BN is a current mode PWM controller designed for boost and flyback topologies. It operates with a switching frequency up to 500kHz.
✓ Total Stock: 14,612 pcs
$ Price Range: $0.78

UC3845BN Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
13,300 pcs
On Request
13300 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,312 pcs
On Request
1312 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.

UC3845BN 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
Operating Voltage
Output Configuration
Output Phases
Output Type
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC3845BN Description

Short technical summary and product information.

The STMicroelectronics UC3845BN is a versatile current mode PWM controller suitable for step-up and step-down DC-DC converter applications. It supports both boost and flyback topologies, offering flexibility in power supply design.

 

Key electrical specifications include an operating voltage range of 7.6V to 30V and a maximum switching frequency of up to 500kHz. The controller features a maximum duty cycle of 48% and provides a transistor driver output. It is designed with frequency control features.

 

This component is housed in an 8-pin DIP package (0.300", 7.62mm) and is designed for through-hole mounting. The operating temperature range is -40°C to 150°C (TJ). The UC3845BN is RoHS3 compliant and REACH unaffected.

UC3845BN Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3845BN Current Mode PWM Controller
Subcategory: PWM Controller

UC3845BN Compliance

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

UC3845BN Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3845BN Features

  • Current mode PWM controller
  • Supports boost and flyback topologies
  • Up to 500kHz switching frequency
  • Wide 7.6V to 30V supply voltage
  • Through-hole 8-DIP package

UC3845BN Applications

  • Used in boost converter power supplies.
  • Suitable for isolated flyback converters.
  • Ideal for DC-DC voltage regulation applications.
  • Can be used in telecommunications power systems.
  • Applicable in industrial power supply designs.

UC3845BN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the UC3845BN?

7.6V to 30V.

What is the operating temperature range of the UC3845BN?

-40°C to 150°C (junction).

What is the package type of the UC3845BN?

8-DIP (0.300", 7.62mm) through-hole, 8-Mini DIP.

What is the maximum switching frequency of the UC3845BN?

Up to 500kHz.

What topologies does the UC3845BN support?

Boost and Flyback.

What is the maximum duty cycle of the UC3845BN?

48%.

What is the output type of the UC3845BN?

Transistor driver, positive, isolation capable.

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