S1131 Datasheet, PDF (10/30 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT

HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1131 Series
Rev.4.1_00
„ Standard Circuit
Input
C_IN^*1
VIN VOUT
ON/OFF^*2
VSS
Output
C_L^*3
Single GND
GND
*1. C_IN is a capacitor for stabilizing the input.
*2. In case of product with ON/OFF circuit.
*3. A tantalum capacitor (2.2 μF or more) can be used.
Figure 11
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
„ Condition of Application
Input capacitor (C_IN): 1.0 μF or more
Output capacitor (C_L): 2.2 μF or more (tantalum capacitor)
Caution Generally a series regulator may cause oscillation, depending on the selection of external
parts. Check that no oscillation occurs with the application using the above capacitor.
10
Seiko Instruments Inc.