CS5111

http://onsemi.com

5

PIN FUNCTION DESCRIPTION (continued)

PACKAGE PIN #

FUNCTION

PIN SYMBOL

SO–24L

FUNCTION

PIN SYMBOL

21

22

Regulated 5.0 V output from the linear regulator section.

23

Input voltage to the linear regulator and the internal supply circuitry.

24

ENABLE

Logic level input to shut down the switching regulator.

TYPICAL PERFORMANCE CHARACTERISTICS

0

20

40

100

3.5

4.5

4.0

60

80

0

0.5

1.0

2.0

–40

0

–20

1.5

–10

–30

0

0.5

1.0

2.0

0

1.4

1.0

1.5

1.2

0.8

0.6

0.4

0.2

0

500

1000

3000

0

180

80

1500

160

40

140

120

100

60

20

2000

2500

Figure 2. 5.0 V Regulator Bias Current vs. Load Current

Figure 3. Supply Current vs. Switch Current

Figure 4. Switch Saturation Voltage

Figure 5. Oscillator Frequency (kHz) vs.