MPQ7934-AEC1

MPQ7934-AEC1

MPSafe^TM-Compatible, 36V, 4-Channel PMIC with 3 Bucks and 1 LDO, AEC-Q100 Qualified

概要

The MPQ7934-AEC1 is a power management IC (PMIC) solution that integrates three high-efficiency step-down DC/DC converters and a low-noise low-dropout (LDO) regulator. Unique dual-stage, 36V buck architecture maximizes efficiency for the 1.8V image sensor input/output (I/O) rail in the CMOS sensor for high resolution camera modules.

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

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. Robust fault protection features include under-voltage lockout (UVLO), over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown (TSD). The one-time programmable (OTP) memory can be used to configure these functions from the factory.

The MPQ7934-AEC1 minimizes external component count, and is available in a space-saving QFN15 (2.5mmx3.5mm) package with wettable flanks. It is available in AEC-Q100 Grade 1.

機能と利点

Optimized for Automotive Cameras:
- Buck 1: 600mA with 3.5V to 36V Input Voltage (V_IN)
- Buck 2: 600mA with 3.5V to 36V V_IN
- Buck 3: 1A with 2.5V to 5.5V V_IN
- Low-Dropout (LDO) Regulator: 200mA for Large CMOS Sensors
Optimized for EMC/EMI Reduction:
- 2.2MHz Fixed Switching Frequency (f_SW)
- Frequency Spread Spectrum (FSS) 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)
Window Watchdog Timer
Over-Current Protection (OCP) with Valley-Current Detection and Hiccup Mode
Power Good (PG) Output
Compliant PMBus Interface with Packet Error Checking (PEC)
Available in a QFN-15 (2.5mmx3.5mm) Package with Wettable Flanks
Available in AEC-Q100 Grade 1

Functional Safety System Design Capable: