LA5318M
Maximum Output Current Load Test Conditions
VCC–VEE=35V RX=8R C1 to C4=10µF C5=33µF R ; 1W or more
Q1 to 4 ; 2SA984 E or F rank
Q5 to 9 ; 2SC2274 E or F rank
Output load resistances R1 to R8 are set in order that current of 25 to 30mA max. (V3, V4 source side : about 60mA) are
supplied to both source and sink sides when an on-level input is applied to the inputs 1 or 2.
VREF Control Block
How to calculate the Q1 drive current.
I=
VCC – VBE – VIN
11k + R
(VBE≈0.7V)
Drive current
IO≈10I=
VCC – 0.7 – VIN
11k + R
×10
Q1 hFE is assumed to be 50.
* Set VCC=INR when INR and OUTR are not used.
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