onsemi NCP1248
The NCP1248 is a new fixed-frequency current-mode controller featuring the Dynamic Self-Supply. This 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 start-up, transients, latch, stand-by etc. This device contains a special HV detector which detect the application unplug from the AC input SOIC−7 line and triggers the X2 discharge current.| Part No. | NCP1248 |
|---|---|
| Datasheet | NCP1248 Download |
| Manufacturer |  onsemi |
| Description | Fixed Frequency Current Mode Controller |
| Buy | Stock & Price |
FEATURES
● Fixed-Frequency Current-Mode Operation using 65 kHz/100 kHz 48Axxx = Specific Device Code xxx = 065 for 65 kHz = 100 for 100 kHz A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb-Free Package Switching Frequency● Frequency Foldback then Skip Mode for Maximized Performance PIN CONNECTIONS in Light Load and Standby Conditions
● Timer-Based Overload Protection with Latched (Option A) Operation
● High-voltage Current Source with Brown-Out Detection and Dynamic Self-Supply, Simplifying the Design of the VCC Circuitry
● Frequency Modulation for Softened EMI Signature Latch FB CS GND 1 2 3 4 8 HV 6 VCC 5 DRV (Top View)
● Adjustable Overpower Protection Dependant on the Bulk Voltage
● Latch-off Input Combined with the Overpower Protection Sensing Input ORDERING INFORMATION See detailed ordering and shipping information on page 35 of this data sheet.
● VCC Operation up to 28 V, With Overvoltage Detection
● 500/800 mA Source/Sink Drive Peak Current Capability Typical...
