RT8249CGQW RT8249 2N DC/DC step-down LDO 5V 3.3V WQFN-20L 3x3 SKIPSEL

Two-channel synchronous DC/DC step-down controller with integrated 5V 3.3V LDO stabilisers RICHTEK RT8249CGQW

• Model RT8249CGQW
• Designation 2N
• Supports Connected Standby mode for Ultrabooks
• CCRCOT control with 100 ns load response time
• Maximum PWM fill factor > 98%
• Input voltage range: 5V to 25V
• Output voltage range: 2V to 5.5V
• 5V/3.3V LDO regulators with 100mA output current
• 1% accuracy on LDO 3.3V output
• Oscillator control output for charge pump applications
• Built-in frequency setting:

RT8249A/B: 400kHz/475kHz (CH1/CH2)
RT8249C: 500kHz/600kHz (CH1/CH2) Built-in soft start and soft discharge

• Current measurement by resistance R_DS(ON) with temp. factor of 4700 ppm/°C
• Independent control of inverter switching
• Protections: OVP (overvoltage protection), UVP (undervoltage protection), OCP (overcurrent protection), OTP (overheating protection)
• Non-blocking under-voltage protection (UVLO)
• Power Good Indicator
• 20-pin WQFN housing
• RoHS compliant and halogen-free