AN8026 Self-excited RCC pseudo-resonance type AC-DC switching power supply controller

AN8026 Self-excited RCC pseudo-resonance type AC-DC switching power supply controller

Pin No. 1 2 3 4 5 6 7 8 9 Symbol TDL TOFF TON CLM GND VOUT VCC OVP FB Description Transformer reset detection Pin for connecting C and R to set minimum off-period Pin for connecting C to set minimum on-period Input pin for overcurrent protection detection Grounding pin Output pin Power supply volta.

Features

0.3 +0.1
  –0.05
• Operating supply voltage range: 3.0±0.3 Stop voltage (8.6 V typical) to 34 V SIP009-P-0000C
• Output block employs the totem pole system.
• Power MOSFET can be directly driven. (output peak current: ±1 A maximum)
• Small pre-start operating current (80 µA typical) allows using a small size start resistor.
• Built-in pulse-by-pulse overcurrent protection function
• Incorporating protection circuit against malfunction at low voltage (start/stop: 14.9 V/8.6 V)
• Built-in overvoltage protection function (externally resettable)
• Equipped with frequency (VF) control function.
• 9.