4/13/2004 - Renesas Technology Corp. announced the M59400FP as a power supply IC for supplying a 5 V stable voltage to a vehicle body control ECU1 microcontroller. The M59400FP incorporates a multiplexer to supplement microcontroller I/O ports, a relay coil driver, and various microcontroller reset functions on a single chip, and achieves low power consumption through an approximately 90% reduction in current dissipation compared with previous Renesas Technology products. Sample shipments of the M59400FP in a small SSOP package will begin on April 9, 2004 in Japan, and the start of mass production will follow in May.
Rapid progress continues to be made in the field of automotive electronics, and optimization control circuits employing microcontrollers are widely used in various automotive systems. These include an increasing number of systems that must continue to function when the engine is not running, such as keyless entry systems, and there is a consequent demand for longer battery life through lower current dissipation.
At the same time, there is a need for greater performance and functionality from microcontroller control systems, bringing a demand for smaller and cheaper system components.
In response to such needs, Renesas Technology has developed the M59400FP low-current-dissipation power supply IC offering a variety of vehicle body control ECU peripheral functions on a single chip.
Additional Product Information
The low-dissipation regulator that supplies a 5 V stable voltage to a microcontroller is a pre-drive type that uses an external output transistor. Selecting an appropriate external transistor allows output current to be adjusted to the optimal level for a particular system.
The package used is a small 0.8 mm pitch, 36-pin SSOP.
Future plans include the development of a version with an on-chip output transistor, and models offering a variety of output voltages.
1. ECU: Electric Control Unit. An electronic control device that performs vehicle engine, AT, ABS, and similar control by means of a microcontroller.
2. BiC-DMOS: A high breakdown voltage process technology that includes DMOS (Double Diffused MOS) transistors with an embedded diffuse epitaxial substrate structure, 5 to 90 V breakdown voltage MOS, and bipolar transistors.
Automotive applications: Body control ECUs
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