LA5318M Просмотр технического описания (PDF) - SANYO -> Panasonic

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LA5318M

Variable Divided Voltage Generator for LCD Use

SANYO -> Panasonic 

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.

No.4145–3/5

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