MPQ7929-AEC1

MPQ7929-AEC1

MPSafe^TM Compatible, 18V, 4-Channel PMIC with 3 Bucks, 1 LDO, and Uprated Current, AEC-Q100 Qualified

概要

The MPQ7929-AEC1 is a power management IC (PMIC) solution integrating three high-efficiency, step-down DC/DC converters and a low-noise, low-dropout (LDO) regulator. Its dual-stage, 18V buck architecture maximizes efficiency for the 1.8V image sensor input/output (I/O) rail in the CMOS sensor in high-resolution camera modules.

Constant-on-time (COT) control with a phase-locked loop (PLL) provides a fast transient response time. During continuous conduction mode (CCM), the fixed 2.2MHz switching frequency (f_SW) greatly reduces external inductor and capacitor sizes.

The PMBus interface allows for application flexibility. The output voltage (V_OUT), power sequence, and protection thresholds can all be adjusted via the interface. Fault statuses can also be monitored. Protection features include under-voltage lockout (UVLO), over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown (TSD).

The MPQ7929-AEC1 minimizes the external component count and is available in a space-saving QFN-15 (2.5mmx3.5mm) package with wettable flanks. It is available in AEC-Q100 Grade 1.

機能と利点

Designed for Automotive Applications:
- Input Voltage (V_IN) Range from 3.5V to 18V
- -40°C to +150°C Junction Temperature (T_J) Rating
- Available in AEC-Q100 Grade 1
Reduced Board Size and BOM:
- Buck 1: 1A with 3.5V to 18V V_IN
- Buck 2: 600mA with 3.5V to 18V V_IN
- Buck 3: 1.5A with 2.5V to 4V V_IN
- Low-Dropout (LDO) Regulator: 200mA for Large CMOS Sensors
- Adjustable Output via Registers
- Available in a QFN-15 (2.5mmx3.5mm) Package

Optimized for EMC/EMI:

2.2MHz Fixed Switching Frequency (f_SW)
Spread Spectrum with On/Off Function
Symmetric Input Capacitor
CISPR 25 Class 5 Compliant
MeshConnect^TM Flip-Chip Package

Additional Features:

Selectable Discontinuous Conduction Mode (DCM) and Forced Continuous Conduction Mode (FCCM)
Over-Current Protection (OCP)
Over-Voltage Protection (OVP) and Under-Voltage Protection (UVP)
Power Good (PG) Output
Compliant PMBus Interface with Packet Error Checking (PEC)
Available with Wettable Flanks

Enables Functional Safety: