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UC3845BVDR2G The On Semiconductor UC3845BVDR2G is a high-performance current mode controller designed for boost and flyback DC-DC converter applications. It operates within a voltage range of 7.6V to 30V and supports switching frequencies up to 500kHz.
Mfr Part #:

UC3845BVDR2G

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The On Semiconductor UC3845BVDR2G is a high-performance current mode controller designed for boost and flyback DC-DC converter applications. It operates within a voltage range of 7.6V to 30V and supports switching frequencies up to 500kHz.
✓ Total Stock: 11,806 pcs
$ Price Range: $0.78

UC3845BVDR2G Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
8,745 pcs
On Request
8745 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
2,061 pcs
On Request
2061 pcs On Request 1 On Request On Request 1741+ On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 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.

UC3845BVDR2G 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
Topology
Voltage
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UC3845BVDR2G Description

Short technical summary and product information.

The UC3845BVDR2G from On Semiconductor is a fixed-frequency, current-mode controller optimized for off-line and DC-DC converter applications. It offers a cost-effective solution with minimal external components, featuring an oscillator, temperature-compensated reference, high-gain error amplifier, current sensing comparator, and a high-current totem pole output.

 

This controller is designed for applications requiring precise frequency control and offers features such as cycle-by-cycle current limiting and adjustable output deadtime from 50% to 70%. The UC3845B variant is tailored for lower voltage applications with UVLO thresholds of 8.5V (on) and 7.6V (off).

 

The device is available in a 14-pin SOIC package, suitable for surface mounting. Its operating temperature range is -40°C to 105°C (TA), and it supports a maximum duty cycle of 48%. The topology supports Boost and Flyback configurations, with an output type of Transistor Driver.

 

Key electrical characteristics include an operating voltage range of 7.6V to 30V and an operating frequency of up to 500kHz. The control features include frequency control, and it operates as a single-output, single-phase device.

UC3845BVDR2G Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3845B High Performance Current Mode Controller
Subcategory: DC DC Switching Controllers

UC3845BVDR2G Compliance

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

UC3845BVDR2G Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3845BVDR2G Features

  • High performance current mode controller.
  • Designed for boost and flyback converters.
  • Operates from 7.6V to 30V input.
  • Switching frequency up to 500kHz.
  • Surface mount 14-SOIC package.

UC3845BVDR2G Applications

  • Ideal for off-line converters.
  • Suitable for DC-DC converter designs.
  • Cost-effective power solutions.
  • Applications requiring precise frequency control.

UC3845BVDR2G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of UC3845BVDR2G?

7.6V to 30V.

What is the maximum switching frequency?

Up to 500kHz.

What is the operating temperature range?

-40°C to 105°C.

What package is UC3845BVDR2G available in?

14-SOIC (0.154", 3.90mm Width).

What topologies does this controller support?

Boost and flyback.

What is the maximum duty cycle?

48%.

What are the UVLO thresholds?

8.5V turn-on and 7.6V turn-off.

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