NCP1234BD65R2G
ActiveCONTROLLER, FIXED FREQUENCY, CURRENT MODE, FOR FLYBACK CONVERTERS/ REEL
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NCP1234BD65R2G
ActiveCONTROLLER, FIXED FREQUENCY, CURRENT MODE, FOR FLYBACK CONVERTERS/ REEL
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | NCP1234BD65R2G |
|---|---|
| Duty Cycle | 80 % |
| Fault Protection | Current Limiting, Over Load, Over Temperature |
| Frequency - Switching | 65 kHz |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Isolation | Isolated |
| Package / Case | 8-SOIC |
| Package / Case | 0.154 in |
| Package / Case [custom] | 7 |
| Package / Case [custom] | 3.9 mm |
| Supplier Device Package | 7-SOIC |
| Topology | Flyback |
| Voltage - Start Up | 12 V |
| Voltage - Supply (Vcc/Vdd) [Max] | 28 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 9.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.27 | |
| 10 | $ 1.14 | |||
| 25 | $ 1.08 | |||
| 100 | $ 0.83 | |||
| 250 | $ 0.73 | |||
| 500 | $ 0.69 | |||
| 1000 | $ 0.54 | |||
| Digi-Reel® | 1 | $ 1.27 | ||
| 10 | $ 1.14 | |||
| 25 | $ 1.08 | |||
| 100 | $ 0.83 | |||
| 250 | $ 0.73 | |||
| 500 | $ 0.69 | |||
| 1000 | $ 0.54 | |||
| Tape & Reel (TR) | 2500 | $ 0.51 | ||
| 5000 | $ 0.49 | |||
| 12500 | $ 0.48 | |||
| Newark | Each (Supplied on Full Reel) | 1 | $ 0.66 | |
| 3000 | $ 0.63 | |||
| 6000 | $ 0.57 | |||
| 12000 | $ 0.52 | |||
| 18000 | $ 0.50 | |||
| 30000 | $ 0.48 | |||
| ON Semiconductor | N/A | 1 | $ 0.44 | |
Description
General part information
NCP1234 Series
NCP1234 is a new fixed-frequency current-mode controller featuring Dynamic Self-Supply (DSS). This device is pin-to-pin compatible with the previous NCP12xx families.The DSS function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during transients.Due to frequency foldback, the controller exhibits excellent efficiency in light load condition while still achieving very low standby power consumption. Internal frequency jittering, ramp compensation, and a versatile latch input make this controller an excellent candidate for converters where component cost is the key constraint.It features a timer-based fault detection that ensures the detection of overload independently of an auxiliary winding, and an adjustable compensation to help keep the maximum power independent of the input voltage.
Documents
Technical documentation and resources