S-814 Datasheet, PDF (10/32 Pages) Seiko Instruments Inc – LOW DROPOUT CMOS VOLTAGE REGULATOR

LOW DROPOUT CMOS VOLTAGE REGULATOR
S-814 Series
„ Standard Circuit
INPUT
C_IN^*1
VIN
VOUT
VSS
OUTPUT
C_L^*2
Rev.2.1_00
Single GND
GND
*1. C_IN is a capacitor used to stabilize input.
*2. In addition to a tantalum capacitor, a ceramic capacitor of 0.47 μF or more can be used in C_L.
Figure 10
Caution The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
„ Technical Terms
1. Low dropout voltage regulator
The low dropout voltage regulator is a voltage regulator featuring a low dropout voltage characteristic due
to its internal low ON-resistance characteristic transistors.
2. Low ESR
ESR is the abbreviation for Equivalent Series Resistance. The low ESR output capacitor (C_L) can be
used in the S-814 Series.
3. Output voltage (V_OUT)
The accuracy of the output voltage is ensured at ±2.0 % under the specified conditions^*1 of input voltage,
output current, and temperature, which differ depending upon the product items.
*1. The condition differs depending upon each product.
Caution If you change the above conditions, the output voltage value may vary out of the
accuracy range of the output voltage. Refer to the “„ Electrical Characteristics” and “„
Characteristics” for details.
4. Line regulation 1 (ΔV_OUT1) and Line regulation 2 (ΔV_OUT2)
Indicate the input voltage dependencies of output voltage. That is, the value shows how much the output
voltage changes due to a change in the input voltage with the output current remained unchanged.
5. Load regulation (ΔV_OUT3)
Indicates the output current dependencies of output voltage. That is, the value shows how much the
output voltage changes due to a change in the output current with the input voltage remained unchanged.
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Seiko Instruments Inc.