S1313 datasheet(23/56 Pages) SII

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SUPER LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

Rev.2.1_00

S-1313 Series



Precautions

• Wiring patterns for the VIN pin, the VOUT pin and GND should be designed so that the impedance is low. When

mounting an output capacitor between the VOUT pin and the VSS pin (CL) and a capacitor for stabilizing the input

between the VIN pin and the VSS pin (CIN), the distance from the capacitors to these pins should be as short as

possible.

• Note that generally the output voltage may increase when a series regulator is used at low load current (10 μA or less).

• Note that generally the output voltage may increase due to the leakage current from an output driver when a series

regulator is used at high temperature.

• Note that the output voltage may increase due to the leakage current from an output driver even if the ON / OFF pin is

at OFF level when a series regulator is used at high temperature.

• Generally a series regulator may cause oscillation, depending on the selection of external parts. The following

conditions are recommended for the S-1313 Series. However, be sure to perform sufficient evaluation under the actual

usage conditions for selection, including evaluation of temperature characteristics. Refer to "6.

Example of

equivalent series resistance vs. Output current characteristics (Ta =

+25°C)" in " Reference Data" for the

equivalent series resistance (RESR) of the output capacitor.

Input capacitor (CIN):

0.1

μF or more

Output capacitor (CL):

0.1

μF or more

• The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitance is small

or an input capacitor is not connected.

• Ringing may occur when these three conditions below are satisfied. Before selecting an input capacitor, be sure to

evaluate sufficiently under the actual usage conditions, including the temperature characteristics.

The power supply inductance is high.

The load current is 100 mA or more.

The difference between the input voltage and the output voltage is close to the value of dropout voltage.

• If the output capacitance is small, power supply's fluctuation and the characteristics of load fluctuation become worse.

Sufficiently evaluate the output voltage's fluctuation with the actual device.

• Overshoot may occur in the output voltage momentarily if the voltage is rapidly raised at power-on or when the power

supply fluctuates. Sufficiently evaluate the output voltage at power-on with the actual device.

• The application conditions for the input voltage, the output voltage, and the load current should not exceed the

package power dissipation.

• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic

protection circuit.

• In determining the output current, attention should be paid to the output current value specified in Table 13 in

" Electrical Characteristics" and footnote *5 of the table.

• SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any

infringement by products including this IC of patents owned by a third party.

S1313 Datasheet(PDF) 23 Page - Seiko Instruments Inc

S1313 Datasheet(HTML) 23 Page - Seiko Instruments Inc

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