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UC3572D The Texas Instruments UC3572D is a negative output flyback pulse width modulator. It operates with a supply voltage range of 4.75V to 30V and a frequency of 100kHz.
Mfr Part #:

UC3572D

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3572D is a negative output flyback pulse width modulator. It operates with a supply voltage range of 4.75V to 30V and a frequency of 100kHz.
✓ Total Stock: 41,978 pcs
$ Price Range: $0.78

UC3572D 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
40,178 pcs
On Request
40178 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
1,800 pcs
On Request
1800 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.

UC3572D 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
SVHC Present
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
Voltage Supply
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UC3572D Description

Short technical summary and product information.

The UC3572D from Texas Instruments is a negative output flyback pulse width modulator designed for generating regulated negative output voltages from a positive input. It is optimized for use in single inductor flyback switching converters employing an external PMOS switch.

 

This device features a wide operating supply voltage range of 4.75V to 30V and operates at a typical frequency of 100kHz. Key control features include current limit and ramp capabilities. The UC3572D supports a maximum duty cycle of 92% and is configured for negative output.

 

Packaged in an 8-SOIC surface mount configuration, the UC3572D is suitable for applications requiring efficient negative voltage generation. It includes an undervoltage lockout circuit and a pulse-by-pulse current limit for protection. The low sleep mode current of 50µA makes it ideal for battery-powered applications.

UC3572D Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3572D Negative Output Flyback Pulse Width Modulator
Subcategory: Switching Controllers

UC3572D Compliance

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

UC3572D Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3572D Features

  • Negative output flyback pulse width modulator.
  • Operates from 4.75V to 30V supply.
  • 100kHz typical switching frequency.
  • Supports external PMOS switch.
  • Surface mount 8-SOIC package.

UC3572D Applications

  • Suitable for negative output flyback converters.
  • Used in step-up and step-down power supplies.
  • Ideal for single-output switching power designs.
  • Works in low-power sleep-mode applications.
  • Supports designs requiring current-limit control.

UC3572D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the UC3572D?

4.75V to 30V.

What is the operating temperature range of the UC3572D?

0°C to 70°C (TA).

What package is the UC3572D available in?

8-SOIC (0.154", 3.90mm width) surface mount package.

What is the switching frequency of the UC3572D?

100kHz.

What is the maximum duty cycle of the UC3572D?

92%.

What topology does the UC3572D use?

Flyback.

Does the UC3572D support synchronous rectification?

No, synchronous rectification is not provided.

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