L78S09CV(2010) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

L78S09CV
(Rev.:2010)

2 A positive voltage regulators

STMicroelectronics 

Typical performance

Figure 35. Adjustable output voltage with temperature compensation

L78Sxx, L78SxxC

VO = VXX (1+R2/R1) + VBE

Note:

Q2 is connected as a diode in order to compensate the variation of the Q1 VBE with the

temperature. C allows a slow rise time of the VO.

Figure 36. Light controllers (VOmin = VXX + VBE)

VO falls when the light goes up

VO rises when the light goes up

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Doc ID 2148 Rev 4

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