The MPQ8633A is a fully integrated, high-frequency, synchronous buck converter. It offers a very compact solution that can achieve up to 12A of output current (IOUT) across a wide input voltage (VIN) supply range, with excellent load and line regulation. The MPQ8633A operates at high efficiency across a wide IOUT load range.

The MPQ8633A adopts internally compensated constant-on-time (COT) control to provide fast transient response and eases loop stabilization. The switching frequency (fSW) can be set to 600kHz, 800kHz, or 1000kHz with the MODE configuration, allowing fSW to remain constant regardless of the input and output voltages.

The output voltage (VOUT) start-up ramp is controlled by an internal 1ms timer. It can be increased by adding a capacitor on TRK/REF. An open-drain power good signal indicates whether the output is within its nominal voltage range. PGOOD is clamped at about 0.7V via an external pull-up voltage when the input supply fails to power the MPQ8633A.

Fully integrated protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8633A requires a minimal number of readily available, standard external components, and is available in QFN-20 (3mmx4mm) and QFN-21 (3mmx4mm) packages.

产品特性和优势

Wide Input Voltage (VIN) Range from 2.7V:

2.7V to 16V with External 3.3V Bias

4V to 16V with Internal Bias or External 3.3V Bias

Differential Output Voltage (VOUT) Remote Sense

Configurable Accurate Current Limit Level

12A Output Current (IOUT)

Low RDS(ON) Integrated Power MOSFETs

Proprietary Switching Loss Reduction Technique

Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response

Stable with Zero ESR Output Capacitor

0.5% Reference Voltage across a 0°C to 70°C Junction Temperature Range

1% Reference Voltage across a -40°C to +125°C Junction Temperature Range

Selectable Pulse-Skip Mode or Forced Continuous Conduction Mode (FCCM)

Excellent Load Regulation

VOUT Tracking

VOUT Discharge

PGOODActive Clamped at Low Level during Power Failure

Configurable Soft-Start Time from 1ms

Pre-Bias Start-Up

600kHz, 800kHz, or 1000kHz Selectable Switching Frequency (fSW)

Non-Latch OCP, UVP, UVLO, Thermal Shutdown, and Latch-Off for OVP

Output Adjustable from 0.6 V to 90% x Vin, Up to 5.5V Max

Available in QFN-20 (3mmx4mm) and QFN-21 (3mmx4mm) Packages

正在供货产品型号

MPQ8633AGLE-Z MPQ8633AGLE-P MPQ8633AGL-Z MPQ8633AGL-P

以 P 和 Z 结尾的零件编号是相同的零件。P 和 Z 仅表示卷筒尺寸