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NCP1253BSN100T1G The ON Semiconductor NCP1253BSN100T1G is a current-mode PWM controller designed for offline power supplies. It operates at a switching frequency of 100kHz and features a surface mount package.
Mfr Part #:

NCP1253BSN100T1G

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1253BSN100T1G is a current-mode PWM controller designed for offline power supplies. It operates at a switching frequency of 100kHz and features a surface mount package.
✓ Total Stock: 2,312 pcs
$ Price Range: $0.75

NCP1253BSN100T1G Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,312 pcs
On Request
1312 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
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NCP1253BSN100T1G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Fault Protection
Frequency
Internal Switch(s)
Mounting Type
Operating Temperature
Operating Voltage
Output Isolation
Supplier Device Package
Topology
Voltage
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NCP1253BSN100T1G Description

Short technical summary and product information.

The NCP1253BSN100T1G from ON Semiconductor is a highly integrated PWM controller for offline power supplies. It operates in peak current mode control with a fixed switching frequency of 100 kHz, which can fold back to 26 kHz under light load conditions. The controller supports a supply voltage range of 8.8 V to 28 V.

 

Key features include adjustable ramp compensation to prevent sub-harmonic oscillations, internally fixed 4 ms soft-start, and fault protection mechanisms such as timer-based auto-recovery or latched short-circuit protection, and latched over-voltage protection on the VCC pin. Frequency jittering is also included for normal and frequency foldback modes.

 

This device is housed in a compact 6-TSOP package, suitable for surface mounting. Its design is optimized for rugged, high-performance offline power supplies, making it suitable for applications like AC-DC converters for TVs, set-top boxes, printers, and offline adapters for notebooks and netbooks.

NCP1253BSN100T1G Quick Information

Product Type: Switching Controller
Series: NCP1253
Canonical Name: NCP1253 Current-Mode PWM Controller
Subcategory: Current Mode PWM Controllers

NCP1253BSN100T1G Compliance

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

NCP1253BSN100T1G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

NCP1253BSN100T1G Features

  • Current-mode PWM controller for offline supplies.
  • 100kHz switching frequency with foldback.
  • Wide 8.8V to 28V VCC operation.
  • Integrated over-voltage and short-circuit protection.
  • Compact 6-TSOP surface mount package.

NCP1253BSN100T1G Applications

  • Used in AC-DC converters for TVs.
  • Suitable for set-top box power supplies.
  • Applied in printer power adapters.
  • Ideal for notebook offline adapters.

NCP1253BSN100T1G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the switching frequency of the NCP1253BSN100T1G?

The NCP1253BSN100T1G operates at a nominal switching frequency of 100 kHz, and also supports 65 kHz operation.

What is the operating voltage range for the NCP1253BSN100T1G?

The operating voltage range for the NCP1253BSN100T1G is from 8.8 V to 28 V.

What is the maximum operating temperature for this switching controller?

The maximum operating temperature (TJ) for the NCP1253BSN100T1G is 125°C.

What type of topology does the NCP1253BSN100T1G use?

The NCP1253BSN100T1G uses Flyback topology.

Does the NCP1253BSN100T1G have output isolation?

Yes, the NCP1253BSN100T1G provides isolated output.

What fault protection features are included in the NCP1253BSN100T1G?

The NCP1253BSN100T1G includes over-voltage and short-circuit protection.

What package is the NCP1253BSN100T1G supplied in?

The NCP1253BSN100T1G is supplied in a 6-TSOP package, also referred to as SOT-23-6 Thin.

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