S-19244A12H-E8T1U Datasheet, PDF (25/68 Pages) Seiko Instruments Inc – CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION

FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
Rev.3.0_00
S-19244xxxH Series
 Explanation of Terms
1. Low dropout voltage regulator
This is a voltage regulator which made dropout voltage small by its built-in low on-resistance output transistor.
2. Output voltage (V_OUT)
This voltage is output at an accuracy of ±2.3% when the input voltage, the output current and the temperature are
in a certain condition^*1.
*1. Differs depending on the product.
Caution If the certain condition is not satisfied, the output voltage may exceed the accuracy range of ±2.3%.
Refer to " Electrical Characteristics" and " Characteristics (Typical Data)" for details.
3.
Line regulation
 ^ΔVOUT1
ΔV_IN • V_OUT


Indicates the dependency of the output voltage against the input voltage. That is, the value shows how much the
output voltage changes due to a change in the input voltage after fixing output current constant.
4. Load regulation (ΔV_OUT2)
Indicates the dependency of the output voltage against the output current. That is, the value shows how much the
output voltage changes due to a change in the output current after fixing input voltage constant.
5. Dropout voltage (V_drop)
Indicates the difference between input voltage (V_IN1) and the output voltage when the output voltage becomes 98%
of the output voltage value (V_OUT3) at V_IN = V_OUT(S) + 1.0 V after the input voltage (V_IN) is decreased gradually.
V_drop = V_IN1 − (V_OUT3 × 0.98)
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