NCP1203P40G The ON Semiconductor NCP1203P40G is an 8-PDIP packaged PWM Current-Mode Controller designed for universal off-line supplies. It operates with a nominal frequency of 40 kHz and features a startup voltage of 7.8V.
Mfr Part #:

NCP1203P40G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1203P40G is an 8-PDIP packaged PWM Current-Mode Controller designed for universal off-line supplies. It operates with a nominal frequency of 40 kHz and features a startup voltage of 7.8V.
✓ Total Stock: 19,150 pcs
$ Price Range: $0.75

NCP1203P40G Available from 1 distributor

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✓ Non-Authorised
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NCP1203P40G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Fault Protection
Frequency
Halogen Free
Internal Switch(s)
Lead Style
Mounting Type
Operating Temperature
Output Isolation
Supplier Device Package
Topology
Voltage

NCP1203P40G Description

Short technical summary and product information.

The NCP1203P40G from ON Semiconductor is a PWM Current-Mode Controller designed for universal off-line power supplies. It is housed in an 8-PDIP package and supports a wide operating voltage range of 7.8V to 16V.

 

This controller features a fixed operating frequency of 40 kHz, with options for 60 kHz and 100 kHz available in other variants. It includes essential protection features such as Over Load, Over Temperature, and Short Circuit protection, along with an auto-recovery function. The device also incorporates an internal high-voltage startup current source and supports an 80% duty cycle.

 

Designed for efficiency, the NCP1203P40G offers features like adjustable skip-cycle capability for improved light-load efficiency and extremely low no-load standby power. Its current-mode control provides inherent pulse-by-pulse current limiting and good audio susceptibility. The component is suitable for applications like AC-DC adapters, battery chargers, and auxiliary power supplies.

 

Mounting is via through-hole method. The operating temperature range is from -40°C to 125°C (TJ). The device is RoHS3 compliant and Halogen Free.

NCP1203P40G Quick Information

Product Type: Offline Switch
Canonical Name: NCP1203 PWM Current-Mode Controller
Subcategory: Offline Switch

NCP1203P40G Compliance

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

NCP1203P40G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

NCP1203P40G Features

  • PWM Current-Mode Controller for offline supplies.
  • Operates at a fixed 40 kHz frequency.
  • Features over load and short circuit protection.
  • Supports 7.8V to 16V operating voltage.
  • Housed in an 8-PDIP through-hole package.

NCP1203P40G Applications

  • Used in AC-DC adapters for notebooks.
  • Suitable for offline battery chargers.
  • Applicable for auxiliary power supplies.
  • Enables ultra-compact switchmode supplies.

NCP1203P40G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the NCP1203P40G?

7.8V to 16V.

What is the switching frequency?

40 kHz.

What is the operating temperature range?

-40°C to 125°C (junction).

What package is the NCP1203P40G available in?

8-PDIP / 8-DIP (0.300", 7.62mm) through-hole package.

Does the NCP1203P40G have internal switches?

No, it requires an external power switch.

What fault protection features are included?

Overload, overtemperature, and short circuit protection.

What is the duty cycle?

80%.

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