Features General Description
Buck Controller (VDDQ)
· High Input Voltages Range from 3V to 28V Input
Power
· Provide Adjustable Output Voltage from 0.75V to
5.5V +1% Accuracy over Temperature
· Integrated MOSFETDrivers and Bootstrap Forward
P-CHMOSFET
· Low Quiescent Current (200mA)
· 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 100kHz 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
· Extra Droop Voltage Control Function with
Adjustable Current Setting
· 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 or Sinking Current up to 1.5A
· Fast Transient Response for Output Voltage
· Output Ceramic Capacitors Support at least 10mF
MLCC
· VTT and VTTREF Track at Half the VDDQSNS by
internal divider
· +20mV Accuracy for VTT and VTTREF
· Independent Over-Current Limit (OCL)
· Thermal Shutdown Protection