CS8183

http://onsemi.com

5

CIRCUIT DESCRIPTION

ENABLE Function

typically, (see Figure 10 or Figure 11), the IC is disabled and

enters a sleep state where the device draws less than 30

µA

Output Voltage

Figures 7 through 12 only display one channel of the

device for simplicity. The configurations shown apply

for both channels.

The outputs are capable of supplying 200 mA to the load

while configured as a similiar (Figure 7), lower (Figure 9),

or higher (Figure 8) voltage as the reference lead. The Adj

lead acts as the inverting terminal of the op amp and the

The device can also be configured as a high−side driver as

displayed in Figure 12.

Figure 7. Tracking Regulator at the Same Voltage

Figure 8. Tracking Regulator at Higher Voltages

GND

GND

GND

GND

Adj

ENABLE

Loads

5.0 V

B+

C1*

1.0

mF

C2**

10

mF

VOUT + VREF

GND

GND

GND

GND

Adj

ENABLE

Loads

B+

C1*

1.0

mF

C2**

10

mF

VOUT + VREF(1 )

RE

RA

)

C3***

10 nF

C3***

10 nF

Figure 9. Tracking Regulator at Lower Voltages

Figure 10. Tracking Regulator with ENABLE Circuit

GND

GND

GND

GND

Adj

ENABLE

Loads

B+

C1*

1.0

mF

C2**

10

mF

VOUT + VREF(

R2

R1

) R2

)

R2

R1

GND

GND

GND

GND

Adj

ENABLE

from MCU

B+

C1*

1.0

mF

C2**

10

mF

R

C3***

10 nF

C3***

10 nF

Figure 11. Alternative ENABLE Circuit

Figure 12. High−Side Driver

GND

GND

GND

GND

Adj

ENABLE

10

mF

GND

GND

GND

GND

Adj

ENABLE

MCU

B+

200 mA

VOUT + B )* VSAT

** C2 is required for stability.

* C1 is required if the regulator is far from the power source filter.

5.0 V

I/O

NCV8501

6.0 V−40 V

100 nF

mC

To Load

(e.g. sensor)

C1*

1.0

mF

C3***

10 nF

C3***

10 nF

*** C3 is recommended for EMC susceptibility