MPQ70340FS-AEC1

MPQ70340FS-AEC1

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

Description

The MPQ70340FS-AEC1 is a power management IC (PMIC) solution that integrates three high-efficiency step-down DC/DC converters and a low-noise LDO. Unique dual-stage 36V 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 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 PMBus. Fault statuses can also be monitored. Robust fault protections 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 is used to set such functions from the factory.

The MPQ70340FS-AEC1 is ISO 26262 ASIL-B hardware capable. Functional safety features include analog built-in self-testing (ABIST), diagnostics, a windowed watchdog timer, and a PG output pin. This PMIC is developed under MPS's advanced MPSafe^TM functional safety product development process, which has been independently certified to meet ISO 26262 guidelines.

The MPQ70340FS-AEC1 minimizes 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.

Features & Benefits

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)
- Symmetric Input Capacitor
- CISPR 25 Class 5 Compliant
- MeshConnect^TM Flip-Chip Package

Additional Features:

Selectable Discontinuous Conduction Mode (DCM) or Forced Continuous Conduction Mode (FCCM)
Windowed 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: