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NCP1345Q01D1R2G The ON Semiconductor NCP1345Q01D1R2G is a highly integrated quasi-resonant flyback controller designed for high-performance off-line USB-PD and USB Type-C power converters. It operates within a wide voltage range and includes advanced control and protection features.
Mfr Part #:

NCP1345Q01D1R2G

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1345Q01D1R2G is a highly integrated quasi-resonant flyback controller designed for high-performance off-line USB-PD and USB Type-C power converters. It operates within a wide voltage range and includes advanced control and protection features.
✓ Total Stock: 4,800 pcs
$ Price Range: $0.75

NCP1345Q01D1R2G Available from 3 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
2,500 pcs
On Request
2500 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
1,300 pcs
On Request
1300 pcs On Request 1 On Request On Request On Request 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.

NCP1345Q01D1R2G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Fault Protection
Internal Switch(s)
Mounting Type
Operating Temperature
Output Isolation
Supplier Device Package
Topology
Voltage
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NCP1345Q01D1R2G Description

Short technical summary and product information.

The NCP1345Q01D1R2G from ON Semiconductor is a highly integrated quasi-resonant flyback controller optimized for USB-PD and USB Type-C power converters. Its dual-pin VCC architecture simplifies VCC management, reducing part count and enhancing performance.

 

This controller features a primary side-based constant output current limiting circuit, ensuring consistent output current regardless of programmed output voltage or nameplate output power. The quasi-resonant (QR) current-mode flyback stage incorporates proprietary valley-lockout circuitry for stable valley switching and transitions to frequency foldback mode to minimize switching losses. At lower loads, it enters skip mode with output voltage compensation.

 

Designed for ruggedness, the NCP1345Q01D1R2G includes integrated high-voltage startup with brownout detection, X2 capacitor discharge capability, and abnormal overcurrent fault protection for winding short circuit detection. It also features internal temperature shutdown, latched overvoltage protection, and NTC-ready overtemperature protection.

 

The device is available in a 9-SOIC package and is surface-mounted. It operates within a voltage range of 8V to 38V and an operating temperature range of -40°C to 125°C (TJ).

NCP1345Q01D1R2G Quick Information

Product Type: AC DC Converters, Offline Switches
Canonical Name: NCP1345 Quasi-Resonant Flyback Controller
Subcategory: AC DC Converters, Offline Switches

NCP1345Q01D1R2G Compliance

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

NCP1345Q01D1R2G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

NCP1345Q01D1R2G Features

  • Highly integrated quasi-resonant flyback controller.
  • Optimized for USB-PD and USB Type-C converters.
  • Primary side constant output current limiting.
  • Wide 8V to 38V operating voltage range.
  • Integrated protection features for ruggedness.

NCP1345Q01D1R2G Applications

  • Designing high-performance off-line power converters.
  • Suitable for USB-PD power supplies.
  • Used in USB Type-C power adapters.
  • Enables simplified VCC management.
  • Ensures stable valley switching operation.

NCP1345Q01D1R2G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the NCP1345Q01D1R2G?

The operating voltage range is 8 V to 38 V.

What is the operating temperature range for this controller?

The operating temperature range is -40°C to 125°C (TJ).

What type of topology does the NCP1345Q01D1R2G use?

It uses a Flyback topology.

What are the main control features of this device?

The main control features include Frequency Control and Soft Start.

What fault protection is integrated into the NCP1345Q01D1R2G?

It integrates Current Limiting, Over Load, Over Power, Over Temperature, and Over Voltage protection.

Is the output isolated for the NCP1345Q01D1R2G?

Yes, the output is isolated.

Does the NCP1345Q01D1R2G have an internal switch?

No, it does not have an internal switch.

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