MPQ8623

16V, 6A, High Efficiency, Synchronous, Step-Down Converter with Adjustable Current Limit

Datasheet EN

Description

The MPQ8623 is a fully integrated, high-frequency, synchronous, buck converter. The MPQ8623 offers a very compact solution that achieves up to 6A of output current with excellent load and line regulation over a wide input supply range. The MPQ8623 operates at high efficiency over a wide output current load range.

The MPQ8623 adopts an internally compensated constant-on-time (COT) control that provides fast transient response and eases loop stabilization.

The operating frequency can be set to 600kHz, 1100kHz, or 2000kHz easily with MODE configuration, allowing the MPQ8623 frequency to remain constant regardless of the input and output voltages.

The output voltage start-up ramp is controlled by an internal 1.5ms timer, which can be increased by adding a capacitor on TRK/REF. An open-drain power good (PGOOD) signal indicates if the output is within its nominal voltage range. PGOOD is clamped to around 0.7V with an external pull-up voltage when the input supply fails to power the MPQ8623.

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

The MPQ8623 requires a minimal number of readily available, standard, external components and is available in a QFN-14 (2mmx3mm) package.

Features & Benefits

Wide Input Voltage Range
- 2.85V to 16V with External 3.3V VCC Bias
- 4V to 16V with Internal VCC Bias or External 3.3V VCC Bias
6A Output Current
Programmable Accurate Current Limit Level
Low R_DS(ON) Integrated Power MOSFETs
Proprietary Switching Loss Reduction Technique
Adaptive Constant-On-Time (COT) for Ultrafast Transient Response
Stable with Zero ESR Output Capacitor
0.5% Reference Voltage Over 0°C to +70°C Junction Temperature Range
1% Reference Voltage Over -40°C to +125°C Junction Temperature Range
Selectable Forced CCM or Pulse-Skip Operation
Excellent Load Regulation
Output Voltage Tracking
Output Voltage Discharge
PGOOD Active Clamped at Low Level during Power Failure
Programmable Soft-Start Time from 1.5ms and Up
Pre-Bias Start-Up
Selectable Switching Frequency from 600kHz, 1100kHz, and 2000kHz
Latch-Off for OCP, OVP, UVP, OTP, and UVLO
Output Adjustable from 0.9V to 0.9 x VIN Up to 6V Max
Available in a QFN-14 (2mmx3mm) Package

Active Part Numbers:

MPQ8623GD-P MPQ8623GD-Z

Meaning of P & Z

Evaluation Tools

EVQ8623-D-00A Evaluation Kit 16V, 6A, High-Efficiency, Synchronous, Step-Down Converter Evaluation Board

The EVQ8623-D-00A is an evaluation board for the MPQ8623, a high-efficiency, monolithic, synchronous, step-down converter.

The EV board can deliver 6A of continuous load current over a wide operating input range. High efficiency can be achieved over a wide output current load range.

The MPQ8623 adopts an internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

This EV board can be turned on or off via a remote on/off input (EN) that is referenced to ground. This input is compatible with popular logic devices.

$25.00
+ tax