MC1404

5

MOTOROLA ANALOG IC DEVICE DATA

Figure 13. 5.0 V, 6.0 Amp, 25 kHz Switching Regulator with Separate Ultra–Stable Reference

+5.0 V Out

200 mA to

6.0 Amps

5000

µF

6.8 V

0.01

µF

Ceramic

–

+

(Low ESR)

0.01

µF

50 V

Ceramic

1N3889

2N5879

120

µH

33

220 k

TL495CN

Motorola

2.2 k

2.2 k

130

0.001

µF

1

–

+

Oscillator

10 k

0.005

µF

9

7

12

100 k

TRIM

(opt)

14

10

–

1000

µF

50 V

+

2

Pulse Width

Modulator

64

5

6

4

MC1404P5

130

11

3

2

18

17

5

8

+ 10 to + 30 ln

–

+

Figure 14. Reference for a High Speed DAC

MC1404P10

12.5 to

40 V

Input

26

4

10 V Reference

0.1

µF

R1

R2

Ladder

and

Switches

Digital

Inputs

Analog

Output

High Speed DAC

R1 and R2 values depend

on the current requirements

of the DAC.