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UC3845BVD1G The ON Semiconductor UC3845BVD1G is a high-performance fixed-frequency current mode controller designed for off-line and DC-DC converter applications. It offers a voltage range of 7.6V to 30V and operates at frequencies up to 500kHz.
Mfr Part #:

UC3845BVD1G

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor UC3845BVD1G is a high-performance fixed-frequency current mode controller designed for off-line and DC-DC converter applications. It offers a voltage range of 7.6V to 30V and operates at frequencies up to 500kHz.
✓ Total Stock: 8,851 pcs
$ Price Range: $0.78

UC3845BVD1G Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Flip Electronics ✓
Non-Authorised Inventory information
8,818 pcs
On Request
8818 pcs On Request 1 On Request On Request On Request On Request On Request
Fe Components ✓
Non-Authorised Inventory information
33 pcs
On Request
33 pcs On Request 10 On Request On Request On Request On Request On Request
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UC3845BVD1G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Lead Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
SVHC Present
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC3845BVD1G Description

Short technical summary and product information.

The UC3845BVD1G from ON Semiconductor is a versatile current mode controller suitable for off-line and DC-DC converter designs. It operates within a voltage range of 7.6V to 30V and supports switching frequencies up to 500kHz, with a maximum duty cycle of 48%.

 

This controller integrates key features such as an oscillator, a temperature-compensated reference, a high-gain error amplifier, and a current sensing comparator. The output stage is a high-current totem pole driver, ideal for powering MOSFETs. Protective features include undervoltage lockout with hysteresis and cycle-by-cycle current limiting.

 

The UC3845BVD1G is available in an 8-SOIC package, designed for surface mounting. Its operating temperature range is -40°C to 105°C (TA). The device supports boost and flyback topologies and offers frequency control features.

 

This controller is designed to provide a cost-effective solution with minimal external components for various power supply applications.

UC3845BVD1G Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3845BVD1G Current Mode Controller
Subcategory: Current Mode Controller

UC3845BVD1G Compliance

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

UC3845BVD1G Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3845BVD1G Features

  • High performance current mode controller.
  • Operates from 7.6V to 30V supply.
  • Switching frequency up to 500kHz.
  • Adjustable output deadtime 50-70%.
  • Surface mount 8-SOIC package.

UC3845BVD1G Applications

  • Ideal for off-line converters.
  • Suitable for DC-DC converter applications.
  • Supports boost and flyback topologies.
  • Cost-effective minimal component solutions.

UC3845BVD1G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3845BVD1G?

The operating voltage range for the UC3845BVD1G is 7.6V to 30V.

What is the maximum switching frequency of the UC3845BVD1G?

The UC3845BVD1G supports switching frequencies up to 500kHz.

What is the maximum duty cycle for the UC3845BVD1G?

The maximum duty cycle for the UC3845BVD1G is 48%.

What is the operating temperature range of the UC3845BVD1G?

The operating temperature range for the UC3845BVD1G is -40°C to 105°C (TA).

What package type is the UC3845BVD1G available in?

The UC3845BVD1G is available in an 8-SOIC package.

What topologies does the UC3845BVD1G support?

The UC3845BVD1G supports Boost and Flyback topologies.

What are the undervoltage lockout thresholds for the UC3845BVD1G?

The UC3845BVD1G has undervoltage lockout thresholds of 8.5V (on) and 7.6V (off).

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