SCY99194
SCY99194 is Fixed Frequency Current Mode Controller manufactured by onsemi.
features a timer- based fault detection that ensures the detection of overload and an adjustable pensation to help keep the maximum power independent of the input voltage.
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 pensation, and a versatile latch input make this controller an excellent candidate for the robust power supply designs.
A dedicated Off mode allows to reach the extremely low no load input power consumption via “sleeping” whole device and thus minimize the power consumption of the control circuitry. http://onsemi.
MARKING DIAGRAM
SOIC- 7 CASE 751U
DAP041 ALYWX
G 1
DAP041 = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb- Free Package
PIN CONNECTIONS
Features
Latch 1
8 HV
- Fixed- Frequency Current- Mode Operation (65 k Hz Switching
Frequency)
- Frequency Foldback then Skip Mode for Maximized Performance in
Light Load and Standby Conditions
FB 2 CS 3 GND 4
6 VCC 5 DRV
- Timer- Based Overload Protection with Latched (Option A) or
(Top View)
Auto- Recovery (Option B) Operation
- High- voltage Current Source with Dynamic Self- Supply,
ORDERING INFORMATION
Simplifying the Design of the VCC Circuitry
- Frequency Modulation for Softened EMI Signature
See detailed ordering and shipping information in the package dimensions section on page 39 of this data sheet.
- Adjustable Overpower Protection Dependant on the Bulk Voltage
- Latch- off Input bined with the Overpower Protection Sensing
Input
- VCC Operation up to 28 V, With Overvoltage Detection
- 500/800 m A Source/Sink Drive Peak Current
Capability
- 10 ms Soft- Start
Typical Applications
- AC- DC Adapters for Notebooks, LCD, and Printers
- Offline Battery Chargers
- Internal Thermal Shutdown
- No- Load Standby Power < 30 m W
- X2 Capacitor in EMI Filter Discharging...
