MPQ2167GD-Z

MPQ2167 6V, 4A, Frequency Programmable Buck Converter AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ2167 is a frequency programmable (300kHz to 2.2MHz) synchronous step-down converter. It can achieve up to 4A continuous output current with peak current control for excellent transient response and efficiency performance. The MPQ2167 operates from a 2.7V to 6.0V input range and generates an output voltage as low as 0.606V. It is ideal for a wide range of applications, including automotive infotainment, clusters, telematics, and portable instruments.                      The MPQ2167 integrates a 35mΩ high-side switch and a 25mΩ synchronous rectifier for high efficiency without an external Schottky diode. With internal compensation, the MPQ2167 requires a minimum number of readily available standard external components and is available in a QFN-11(2mm x 3mm) package. The MPQ2167 can be configured for either advanced asynchronous mode (AAM) or forced continuous conduction mode (FCCM) operation at light load. AAM provides high efficiency by reducing switching losses at light load while FCCM has controllable frequency and a lower output ripple. The MPQ2167 offers standard features, including soft-start, enable control, and a power good indicator. In addition, the MPQ2167 provides over-current protection with valley current detection, which is used to avoid current runaway. Also, it has short-circuit protection, reliable overvoltage protection, and auto recovery thermal protection. 2.7V to 6.0V Operating Input Range Adjustable Output from 0.606V Up to 4A Continuous Output current High Efficiency Synchronous Mode Control 35mΩ and 25mΩ Internal Power MOSFET Programmable Frequency up to 2.2MHz 42μA Quiescent Current Low Shutdown Mode Current 100% Duty Cycle Operation Internal Compensation Mode Selectable AAM or FCCM Operation Option External Soft Start Remote EN Control Power Good Indicator Cycle-by-Cycle Over-Current Protection Short-Circuit Protection VIN Under-Voltage Lockout VOUT Over-Voltage Protection Thermal Shutdown Available in QFN-11(2mm x 3mm) Package Available in AEC-Q100 Grade-1 APPLICATIONS      Automotive Infotainment Automotive Clusters Automotive Telematics Industrial Supplies Battery-Powered Devices All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. MPQ2167 Rev. 1.0 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 MPQ2167 – 6V, 4A, FREQUENCY PROGRAMMABLE, BUCK CONVERTER, AEC-Q100 QUALIFIED TYPICAL APPLICATION Efficiency vs. Load Current VOUT=1.8V, AAM, L = 1µH, FSW=2.2MHz 98 EFFICIENCY (%) 94 90 86 82 78 Vin=3.3V Vin=5V Vin=6V 74 70 10 100 1000 10000 LOAD CURRENT (mA) MPQ2167 Rev. 1.0 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MPQ2167 – 6V, 4A, FREQUENCY PROGRAMMABLE, BUCK CONVERTER, AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number* MPQ2167GD MPQ2167GD-AEC1 Package Top Marking QFN-11 (2mm×3mm) See Below * For Tape & Reel, add suffix –Z (e.g. MPQ2167GD–Z) TOP MARKING (MPQ2167GD & MPQ2167GD-AEC1) ATZ: Product code of MPQ2167GD and MPQ2167GD-AEC1 Y: Year code WW: Week code LLL: Lot number PACKAGE REFERENCE QFN-11 (2mm x 3mm) MPQ2167 Rev. 1.0 www.MonolithicPower.com 3/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 MPQ2167 – 6V, 4A, FREQUENCY PROGRAMMABLE, BUCK CONVERTER, AEC-Q100 QUALIFIED PIN FUNCTIONS PIN # Name 1 IN 2 PGND 3 FREQ 4 AGND 5 FB 6 SS 7 SW 8 PG 9 SYNCO 10 MODE 11 EN Description Input supply. IN supplies all power to the converter. Place a decoupling capacitor to ground as close as possible to the IC to reduce switching spikes. Power ground. Connect to larger copper areas to the negative terminals of the input and output capacitors. Switching frequency programmable input. Connect a resistor to GND to set the switching frequency. Analog ground. Ground for internal logic and signal circuit. Feedback point. Negative input of the error amplifier. Connect to the tap of an external resistor divider between the output and GND to set the regulation voltage. In addition, power good and under-voltage lockout circuits use FB to monitor the output voltage. Soft-start. Place a capacitor from SS to GND to set the soft-start time externally. Floating this pin will activate the internal default 1ms soft-start setting. Switch output. Internally connect to the high-side and low-side power switches. Outside connect to the output inductor. Power good indicator. The PG output is an open drain that connects to VIN by an internal pull-up resistor. PG is pulled up to VIN when the FB voltage is within 15% of the regulation level. If the FB voltage is out of that regulation range, it will drop down. Synchronization output. Output a 180° out of phase clock to the other devices. Mode selection. Connect to logic high or input voltage VIN for FCCM. Connect to logic low or ground for AAM. Do not leave MODE floating. Enable input. Drive EN high to turn on the device. Leaving EN floating or grounded will disable the device. ABSOLUTE MAXIMUM RATINGS (1) VIN .............................................................. +6.5V VSW -0.3V(-3V for