Monolithic Power Systems (MPS) MP9842/MPQ9842 Step-Down Converters

Monolithic Power Systems (MPS) MP9842/MPQ9842 Step-Down Converters are high-frequency, synchronous, rectified, step-down, switch-mode converters offering built-in power MOSFETs. The compact solution delivers 2A of continuous output current with excellent load and line regulation over a wide 3.3V to 36V input supply range. The device provides a programmable switching frequency allowing synchronization to an external clock in the range of 350kHz to 2.5MHz.

High efficiency over the output current load range is enabled via synchronous operation and ultra-low 14μA sleep mode quiescent current. The high efficiency allows the MP9842/MPQ9842 to be ideal for various step-down applications in automotive input environments and battery-powered applications.

Operating in peak-current-mode provides a fast transient response and eases loop stabilization in the MP9842/MPQ9842 Converters. Additionally, the converter's excellent low dropout performance is utilized in high duty cycle applications.

The MPS MP9842/MPQ9842 Step-Down Converters implement full protection features, including over-current protection (OCP), short-circuit protection (SCP), and thermal shutdown. An open-drain power-good (PG) signal indicates when the output is within 10% of its nominal voltage.

The MP9842/MPQ9842 is housed in a space-saving QFN-16 (3mm x 4mm) package. The MPQ9842 is AEC-Q100 Grade-1 qualified.

Features

2μA Low shutdown supply current
14μA No-load quiescent current
Internal 125mΩ high-side and 55mΩ low-side MOSFET
350kHz to 2.5MHz Programmable switching frequency
Power Good (PG) output

External Soft Start (SS)
80ns Minimum on time
Selectable Forced CCM and AAM
Hiccup Over-Current Protection (OCP)
AEC-Q100 Grade-1 (MPQ9842)
Available in a QFN-16 (3mm x 4mm) package

Applications

Automotive systems
Industrial power systems

Additional Resources

Typical Application

公開: 2022-02-09 | 更新済み: 2022-12-20