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