Anpec Electronics APW8868B
The APW8868B integrates a synchronous buck PWM controller to generate VDDQ, a sourcing and sinking LDO linear regulator to generate VTT. It offers the lowest total solution cost in system where space is at a premium. The APW8868B provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode.FEATURES
Buck Controller (VDDQ)● High Input Voltages Range from 3V to 28V Input Power
● Provide Adjustable Output Voltage from 0.675V to 5.5V +1% Accuracy over Temperature
● Integrated MOSFET Drivers and Bootstrap Forward P-CH MOSFET
● Low Quiescent Current (200µA)
● Excellent Line and Load Transient Responses
● PFM Mode for Increased Light Load Efficiency
● Constant On-Time Controller Scheme - Switching Frequency Compensation for PWM Mode - Adjustable Switching Frequency from 400kHz to 550kHz in PWM Mode with DC Output Current
● S3 and S5 Pins Control The Device in S0, S3 or S4/ S5 State
● Power Good Monitoring
● 70% Under-Voltage Protection (UVP)
● 125% Over-Voltage Protection (OVP)
● Adjustable Current-Limit Protection - Using Sense Low-Side MOSFET’s RDS(ON)
● TQFN-20 3mmx3mm Thin package
● Lead Free Available (RoHS Compliant) +1.5A LDO Section (VTT)
● Sourcing and Sinking Current up to 1.5A
● Fast Transient Response for Output Voltage
● Output Ceramic Capacitors Support at least 1...