Renesas R2A30440NP#W0

Overview

R2A30440NP#W0 from Renesas Electronics is a 6-channel motor driver IC designed for precision actuator control in digital still cameras (DSC), digital video cameras (DVC), and surveillance camera autofocus/zoom modules. It integrates six independent H-bridge drivers with D-class amplifiers for channels 1–4, constant-current (CC) drive for channels 5–6, FLL-controlled current regulation on channel 5, and serial autonomous control logic. Operating from 2.7–3.6 V VCC and 2.7–5.5 V VM, it supports micro-stepping up to 1024 steps per revolution.

For engineers reviewing the R2A30440NP#W0 datasheet, R2A30440NP#W0 pinout, R2A30440NP#W0 application, or R2A30440NP#W0 equivalent, key selection considerations include its 40-pin QFN package with underside thermal pad, exclusive control mode enabling effective 7-channel operation, integrated PI drivers and comparators, and dual power domain isolation between VCC and VM supplies.

Technical Context

The R2A30440NP#W0 implements six independent motor output stages with differentiated drive modes: channels 1–2 use D-class H-bridge for low-power stepper control; channels 3–4 support full-swing PWM constant-voltage (CV) drive via D-class amplifiers; channels 5–6 deliver constant-current (CC) drive with channel 5 adding FLL-based current regulation. Control is executed via 3-line serial interface (CS/SCLK/SDAT) or discrete input lines (IN3–IN6), supporting autonomous u-step sequencing and exclusive single-channel activation for 5–6–7ch emulation.

It features internal power domain separation between logic (VCC/DGND) and motor (VM/PGND) supplies, preventing reverse current flow. Thermal management relies on the exposed thermal pad (pin 10 DGND) and derating curve (−12.72 mW/°C above 25°C), with absolute max junction temperature of 150°C and allowable power dissipation of 1590 mW at 25°C ambient.

Key Specifications

Pinout & Package

Package: 40-pin QFN, 5 mm × 5 mm, 0.80 mm max height, with exposed thermal pad on underside (connected to pin 10 DGND).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 6-channel motor driver applications.

Compared with TD62783AFNG and DRV8837RGTT, the R2A30440NP#W0 delivers superior integration for camera-specific motion control - combining 6-channel H-bridges, autonomous u-step, FLL-regulated CC drive, and thermal-aware packaging in a single 5×5 mm QFN, eliminating six discrete drivers and associated support circuitry.

Availability

R2A30440NP#W0 is available at Aetrix Electronics and suitable for digital camera module manufacturing, surveillance system OEM production, and embedded optical actuator development requiring stable component supply and long-lifecycle support.

Supply support for R2A30440NP#W0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for automotive, industrial, and consumer applications.

The R2A30440NP#W0 belongs to Renesas' camera-optimized motor driver product line, engineered specifically for high-precision, low-power optical actuation in compact imaging systems where integration, thermal performance, and autonomous control are critical.

FAQ

What is the maximum allowable ambient temperature for continuous operation of the R2A30440NP#W0?

The R2A30440NP#W0 has an ambient operating temperature range of −30°C to +85°C. For continuous operation at full load, thermal derating must be applied above 25°C ambient: power dissipation decreases by 12.72 mW per °C. At 85°C ambient, maximum allowable power drops to approximately 826 mW. Proper heatsinking via the exposed thermal pad (pin 10 DGND) is mandatory to sustain rated output current across this range. The R2A30440NP#W0 junction temperature must not exceed 150°C under any condition.

Does the R2A30440NP#W0 support true pin-to-pin replacement for the R2A30423NP?

Yes - the R2A30440NP#W0 pin layout and terminal functions are explicitly stated as "basically identical" to the R2A30423NP in its official datasheet (R19DS0063EJ0100). All 40 pins retain identical electrical roles, package dimensions (5×5 mm QFN), and thermal pad configuration. However, firmware-level configuration may differ due to enhanced features in the R2A30440NP#W0, including FLL control on channel 5 and expanded u-step resolution. The R2A30440NP#W0 is a functional upgrade, not a drop-in replacement without validation.

How does the exclusive control mode work on channels 5 and 6 of the R2A30440NP#W0?

Exclusive control mode prevents simultaneous activation of channels 5 and 6: only one operates at a time, time-multiplexed via IN5/IN6 signals. This allows their combined use to emulate a seventh independent channel - for example, driving two separate VCMs in alternating sequence for dual-axis OIS. The mode is enabled via serial command or parallel input configuration and enforces strict mutual exclusion; attempting concurrent operation triggers internal protection. This behavior is unique to the R2A30440NP#W0 and not supported on earlier variants like R2A30423NP.

Can the R2A30440NP#W0 drive both stepper motors and voice coil motors (VCMs) simultaneously?

Yes - the R2A30440NP#W0 supports heterogeneous actuator drive: channels 1–4 operate in D-class constant-voltage (CV) mode optimized for 2-phase stepper motors, while channels 5–6 operate in constant-current (CC) mode with fast response tailored for voice coil motors. Each channel group uses independent VM supplies (VM12/VM34 for steppers; VM5/VM6 for VCMs), allowing different voltage rails and grounding schemes. Simultaneous operation is permitted as long as total power dissipation remains within thermal limits and exclusive control is disabled for ch5/ch6.

What is the role of the RNF5 and RNF6 terminals on the R2A30440NP#W0?

RNF5 (pin 23, labeled PGND5(RNF5)) and RNF6 (pin 15, labeled PGND6(RNF6)) are dedicated current-sense return nodes for channels 5 and 6 in constant-current mode. Unlike standard power grounds, they connect directly to the internal current-sense amplifier and must be routed with minimal impedance to external sense resistors (if used) or shorted to PGND planes. Their separation from other PGND pins ensures accurate CC regulation by isolating measurement paths from switching noise generated by other channels. The R2A30440NP#W0 datasheet specifies these terminals as essential for FLL operation on channel 5.