OUTLINE

The RS5RJ series are step-up DC/DC converter ICs equipped with a voltage regulator (VR) and a voltage detector (VD) by CMOS process. Each of these step-up DC/DC converter ICs consists of a VFM DC/DC converter, a linear regulator and a voltage detector. These ICs are output-voltage-fixed type regulators which function as a linear regulator when input voltage is high, and as step-up DC/DC converter + linear regulator when input voltage is low, by using an inductor, a diode and a capacitor as external parts for the ICs.

Since a voltage detector is built in these ICs, the potentials such as the output voltage of DC/DC converters can be monitored.

In addition, these step-up DC/DC converter ICs are suitable for battery-powered and hand-held instruments because internal circuits can be turned off by the chip enable function so that the standby current can be minimized.

FEATURES

• Low Supply Current...........................................TYP. 15µA (RS5RJ3624A : VIN=3.0V,at no load)

• Standby Mode .....................................................Istandby=MAX. 1.0µA (RS5RJ××××A)

Istandby=MAX. 10.0µA (RS5RJ××××B)

• Low Voltage Operation Possible .......................Operating Voltage VIN=1.2V to 10V

• High Output Voltage Accuracy .........................Fixed Output Voltage Accuracy±2.5

• High Detector Threshold Accuracy...................±2.5

• Output Voltage can be set at Users request (refer to Selection Guide).

• Voltage close to batterys voltage can be output because these ICs are of a step-up / step-down type

(Ex. a fixed voltage of 3V can be output by a 3V battery).

• Built-in Protection Circuits for Lx Driver

• Pin for External Driver is equipped, and a large current output can be obtained.

• Small Package ....................................................8pin SOP

APPLICATIONS

• Power source for cameras, camcorders, and hand-held audio equipment.

• Power source for small OA apparatus such as note type personal computers,and word processors.

• Power source for hand-held communication appliances such as pagers,cordless telephones, and cellular phones.